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Significant Accounting Policies (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Accounting Policies [Line Items]          
Current Income Tax Expense (Benefit)     $ 0    
Deferred Tax Assets, Net $ 9,100,000   9,100,000    
Significant Accounting Policies (Textual) [Abstract]          
Notes receivable 15,494,000   15,494,000   $ 14,369,000
Note maturity public capital threshold     5,000,000    
Note receivable interest income 300,000 $ 1,300,000 700,000 $ 2,500,000  
Net of a valuation allowance 100,000   100,000    
Tax benefit/(expense), net (1,404,000) (2,190,000) $ (1,829,000) (5,519,000)  
Recognition and evaluation of tax position, whether a tax position is more likely     not (greater than 50 percent probability)    
Unrecognized tax benefit, accrued interest or penalties due to examination $ 0   $ 0    
Proceeds from Sale and Collection of Notes Receivable     (1,125,000) 38,800,000  
Interest Income, Related Party     0 0  
Note due February 2017 [Member]          
Accounting Policies [Line Items]          
Increase (Decrease) in Notes Receivables     $ 1,100,000    
Note Receivable Interest Rate 10.00%   10.00%    
Significant Accounting Policies (Textual) [Abstract]          
Notes receivable         11,869,000
Note maturity public capital threshold     $ 5,000,000    
Aggregate Commitment on Note Receivable $ 12,994,000   $ 12,994,000    
Other [Member]          
Accounting Policies [Line Items]          
Note Receivable Interest Rate 8.00%   8.00%    
Significant Accounting Policies (Textual) [Abstract]          
Notes receivable $ 2,500,000   $ 2,500,000   $ 2,500,000
Aggregate Commitment on Note Receivable 2,500,000   2,500,000    
RedeemableNoncontrollingInterest [Member]          
Accounting Policies [Line Items]          
Comprehensive (loss)/income attributable to non-controlling interests $ 224,000 $ 50,000 $ (1,000) $ 106,000