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Fair Value of Financial Instruments (Narrative) (Details) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other liabilities $ 224,381,000 $ 199,187,000
Liabilities, Fair Value Disclosure, Recurring 300,059,000 301,785,000
Level 2 [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Liabilities, Fair Value Disclosure, Recurring 299,797,000 301,525,000
Level 2 [Member] | Secured Notes One [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Secured notes 120,000,000  
Level 2 [Member] | Secured Notes Two [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Secured notes 20,000,000  
Call Option [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other liabilities $ 300,000 $ 300,000