Annual report pursuant to Section 13 and 15(d)

Commitments And Contingencies (Roseland Contingent Consideration) (Narrative) (Details)

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Commitments And Contingencies (Roseland Contingent Consideration) (Narrative) (Details) (USD $)
 1 Months Ended 12 Months Ended
Apr. 30, 2013
Dec. 31, 2013
Business Acquisition, Contingent Consideration [Line Items]    
Purchase accounting adjustments   $ 0
Earn out paid   2,755,000
Roseland Partners, L.L.C. [Member]
    
Business Acquisition, Contingent Consideration [Line Items]    
Fair value of contingent consideration   10,010,000
Business acquisition, contingent cash payment   15,600,000
Benefit related to change in fair value of Earn Out liability   2,300,000
Purchase accounting adjustments   0
Contingent purchase price measurement period   33 months
Discount on contingently returnable consideration   0
Amount of cash deposited to escrow   34,000,000
Amount of escrow released 6,700,000  
Roseland Assets [Member] | Roseland Partners, L.L.C. [Member]
    
Business Acquisition, Contingent Consideration [Line Items]    
Fair value of contingent consideration   6,300,000
Business acquisition, contingent cash payment   8,600,000
Completion Of Certain Developments [Member] | Roseland Partners, L.L.C. [Member]
    
Business Acquisition, Contingent Consideration [Line Items]    
Business acquisition, contingent cash payment   2,800,000
Start Of Construction On Certain Developments [Member] | Roseland Partners, L.L.C. [Member]
    
Business Acquisition, Contingent Consideration [Line Items]    
Business acquisition, contingent cash payment   2,800,000
Obtaining Of Tax Credits/Grants [Member] | Roseland Partners, L.L.C. [Member]
    
Business Acquisition, Contingent Consideration [Line Items]    
Business acquisition, contingent cash payment   3,000,000
Business acquisition, earn out period   3 years
Total Return To Shareholders [Member] | Roseland Partners, L.L.C. [Member]
    
Business Acquisition, Contingent Consideration [Line Items]    
Fair value of contingent consideration   3,700,000
Business acquisition, contingent cash payment   7,000,000
Business acquisition, earn out period   3 years
Failure To Achieve Certain Level Of Fee Revenue [Member] | Roseland Partners, L.L.C. [Member]
    
Business Acquisition, Contingent Consideration [Line Items]    
Business acquisition, contingent cash payment   $ 2,000,000