• Filing Date: 2017-02-22
  • Form Type: 10-K
  • Description: Annual report
v3.6.0.2
Investments - Schedule of Company's Investments in Limited Partnerships (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Investment Securities [Line Items]    
Carrying Value $ 29,263 $ 23,930
Unfunded Balance 13,554 18,224
Private US Lower Middle Market Companies [Member]    
Investment Securities [Line Items]    
Carrying Value 6,246 4,774
Unfunded Balance $ 6,428 $ 7,888
Percentage investment held by the entity 16.50% 16.50%
Bank Loans Public and Private Corporate Bonds Asset Backed Securities Equity and Debt Restructuring [Member]    
Investment Securities [Line Items]    
Carrying Value $ 7,358 $ 4,713
Unfunded Balance $ 1,360 $ 3,320
Percentage investment held by the entity 1.76% 1.76%
Equity and Debt Securities Publicly Traded US and Non US Issuers [Member]    
Investment Securities [Line Items]    
Carrying Value $ 11,333 $ 11,689
Percentage investment held by the entity 66.58% 65.79%
Power Utility and Energy Industries and Infrastructure [Member]    
Investment Securities [Line Items]    
Carrying Value $ 4,326 $ 2,754
Unfunded Balance $ 5,766 $ 7,016
Percentage investment held by the entity 0.18% 0.18%