Commitments And Contingencies (Roseland Contingent Consideration) (Narrative) (Details) (USD $)
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3 Months Ended |
12 Months Ended |
0 Months Ended |
1 Months Ended |
0 Months Ended |
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Sep. 17, 2014
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Mar. 21, 2014
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Jan. 25, 2013
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Apr. 30, 2013
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Jul. 18, 2014
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Oct. 23, 2012
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Business Acquisition, Contingent Consideration [Line Items] |
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Interest and other investment income |
$ 1,399,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 908,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 922,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 386,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 1,616,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 187,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 1,094,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 6,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 3,615,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 2,903,000us-gaap_InvestmentIncomeInterestAndDividend
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$ 34,000us-gaap_InvestmentIncomeInterestAndDividend
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Earn out paid |
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5,228,000cli_BusinessAcquisitionContingentConsiderationCashPaid
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2,755,000cli_BusinessAcquisitionContingentConsiderationCashPaid
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Roseland Partners, L.L.C. [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Fair value of contingent consideration |
900,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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900,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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10,000,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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Business acquisition, contingent cash payment |
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15,600,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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Interest and other investment income |
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1,500,000us-gaap_InvestmentIncomeInterestAndDividend / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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2,300,000us-gaap_InvestmentIncomeInterestAndDividend / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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Purchase accounting adjustments |
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0us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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Earn out paid |
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1,400,000cli_BusinessAcquisitionContingentConsiderationCashPaid / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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1,400,000cli_BusinessAcquisitionContingentConsiderationCashPaid / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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2,800,000cli_BusinessAcquisitionContingentConsiderationCashPaid / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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Contingent purchase price measurement period |
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33 months
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Amount of cash deposited to escrow |
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34,000,000cli_BusinessAcquisitionAcquireeCashDepositedToEscrow / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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Amount of escrow released |
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6,700,000cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember
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Roseland Assets [Member] | Roseland Partners, L.L.C. [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Fair value of contingent consideration |
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6,300,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_RoselandAssetsMember
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Business acquisition, contingent cash payment |
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8,600,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_RoselandAssetsMember
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Completion Of Certain Developments [Member] | Roseland Partners, L.L.C. [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Business acquisition, contingent cash payment |
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2,800,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_CompletionOfCertainDevelopmentsMember
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Start Of Construction On Certain Developments [Member] | Roseland Partners, L.L.C. [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Business acquisition, contingent cash payment |
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2,800,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_StartOfConstructionOnCertainDevelopmentsMember
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Completion/Start Of Certain Developments [Member] | Minimum [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Probability of occurrence |
92.00%cli_ProbabilityOfOccurrence / us-gaap_ContingentConsiderationByTypeAxis = cli_CompletionStartOfCertainDevelopmentsMember / us-gaap_RangeAxis = us-gaap_MinimumMember
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92.00%cli_ProbabilityOfOccurrence / us-gaap_ContingentConsiderationByTypeAxis = cli_CompletionStartOfCertainDevelopmentsMember / us-gaap_RangeAxis = us-gaap_MinimumMember
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Completion/Start Of Certain Developments [Member] | Maximum [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Probability of occurrence |
99.00%cli_ProbabilityOfOccurrence / us-gaap_ContingentConsiderationByTypeAxis = cli_CompletionStartOfCertainDevelopmentsMember / us-gaap_RangeAxis = us-gaap_MaximumMember
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99.00%cli_ProbabilityOfOccurrence / us-gaap_ContingentConsiderationByTypeAxis = cli_CompletionStartOfCertainDevelopmentsMember / us-gaap_RangeAxis = us-gaap_MaximumMember
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Obtaining Of Tax Credits/Grants [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Probability of occurrence |
50.00%cli_ProbabilityOfOccurrence / us-gaap_ContingentConsiderationByTypeAxis = cli_ObtainingOfTaxCreditsGrantsMember
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50.00%cli_ProbabilityOfOccurrence / us-gaap_ContingentConsiderationByTypeAxis = cli_ObtainingOfTaxCreditsGrantsMember
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Obtaining Of Tax Credits/Grants [Member] | Roseland Partners, L.L.C. [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Business acquisition, contingent cash payment |
3,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_ObtainingOfTaxCreditsGrantsMember
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3,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_ObtainingOfTaxCreditsGrantsMember
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3,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_ObtainingOfTaxCreditsGrantsMember
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Business acquisition, earn out period |
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3 years
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Earn out paid |
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1,000,000cli_BusinessAcquisitionContingentConsiderationCashPaid / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_ObtainingOfTaxCreditsGrantsMember
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Obtaining Of Tax Credits/Grants [Member] | Roseland Partners, L.L.C. [Member] | Scenario, Forecast [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Earn out paid |
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1,000,000cli_BusinessAcquisitionContingentConsiderationCashPaid / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_ObtainingOfTaxCreditsGrantsMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember
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Total Return To Shareholders [Member] | Roseland Partners, L.L.C. [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Fair value of contingent consideration |
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3,700,000us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_TotalReturnToShareholdersMember
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Business acquisition, contingent cash payment |
7,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_TotalReturnToShareholdersMember
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7,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_TotalReturnToShareholdersMember
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Business acquisition, earn out period |
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3 years
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Failure To Achieve Certain Level Of Fee Revenue [Member] | Roseland Partners, L.L.C. [Member] |
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Business Acquisition, Contingent Consideration [Line Items] |
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Business acquisition, contingent cash payment |
$ 2,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_FailureToAchieveCertainLevelOfFeeRevenueMember
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$ 2,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = cli_RoselandPartnersLLCMember / us-gaap_ContingentConsiderationByTypeAxis = cli_FailureToAchieveCertainLevelOfFeeRevenueMember
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