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Commitments And Contingencies (Roseland Contingent Consideration) (Narrative) (Details) (USD $)
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3 Months Ended | 6 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||||||||||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Mar. 21, 2014
Roseland Partners, L.L.C. [Member]
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Jan. 25, 2014
Roseland Partners, L.L.C. [Member]
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Apr. 30, 2013
Roseland Partners, L.L.C. [Member]
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Jun. 30, 2014
Roseland Partners, L.L.C. [Member]
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Jun. 30, 2014
Roseland Partners, L.L.C. [Member]
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Jun. 30, 2014
Roseland Assets [Member]
Roseland Partners, L.L.C. [Member]
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Jun. 30, 2014
Completion Of Certain Developments [Member]
Roseland Partners, L.L.C. [Member]
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Jun. 30, 2014
Start Of Construction On Certain Developments [Member]
Roseland Partners, L.L.C. [Member]
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Jun. 30, 2014
Completion/Start Of Certain Developments [Member]
Minimum [Member]
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Jun. 30, 2014
Completion/Start Of Certain Developments [Member]
Maximum [Member]
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Jun. 30, 2014
Obtaining Of Tax Credits/Grants [Member]
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Jun. 30, 2014
Obtaining Of Tax Credits/Grants [Member]
Roseland Partners, L.L.C. [Member]
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Sep. 30, 2014
Obtaining Of Tax Credits/Grants [Member]
Roseland Partners, L.L.C. [Member]
Scenario, Forecast [Member]
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Jun. 30, 2014
Total Return To Shareholders [Member]
Roseland Partners, L.L.C. [Member]
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Jun. 30, 2014
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] | |||||||||||||||||||
| Fair value of contingent consideration | $ 10,000,000 | $ 10,000,000 | $ 6,300,000 | $ 3,700,000 | |||||||||||||||
| Business acquisition, contingent cash payment | 15,600,000 | 15,600,000 | 8,600,000 | 2,800,000 | 2,800,000 | 3,000,000 | 7,000,000 | 2,000,000 | |||||||||||
| Business acquisition, earn out period | 3 years | 3 years | |||||||||||||||||
| Interest and other investment income | 922,000 | 1,094,000 | 1,308,000 | 1,100,000 | 380,000 | ||||||||||||||
| Purchase accounting adjustments | 0 | ||||||||||||||||||
| Earn out paid | 3,936,000 | 2,755,000 | 1,400,000 | 2,800,000 | 1,000,000 | ||||||||||||||
| Probability of occurrence | 92.00% | 99.00% | 50.00% | ||||||||||||||||
| Contingent purchase price measurement period | 33 months | ||||||||||||||||||
| Amount of cash deposited to escrow | 34,000,000 | ||||||||||||||||||
| Amount of escrow released | $ 6,700,000 | ||||||||||||||||||