XML 47 R34.htm IDEA: XBRL DOCUMENT v3.7.0.1
Fair Value Measurement (Narrative) (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
USD ($)
broker
Dec. 31, 2016
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Percentage of portfolio of unadjusted fair values obtained 99.70%  
Percentage of portfolio of specific unadjusted broker quotes obtained 0.30%  
Liabilities $ 1,690 $ 785
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Liabilities 1,405 765
Commercial Mortgage Backed Securities [Member] | Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Trading securities, fair value disclosure $ 28,600 30,000
Minimum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Number of knowledgeable outside security brokers consulted to determine fair value | broker 1  
Borrowings [Member] | Unsecured debt [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Liabilities $ 374,633 180,000
Borrowings [Member] | Unsecured debt [Member] | Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Liabilities $ 374,633 $ 180,000