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Investment in Unconsolidated Affiliates - Summary of Information for the Company's Equity Investment (Details) - USD ($)
$ in Thousands
8 Months Ended 12 Months Ended
Sep. 01, 2014
Dec. 31, 2015
Dec. 31, 2014
Summary of company's equity investment      
Equity in income of unconsolidated affiliate   $ 3,460 $ 2,705
Ending balance   $ 1,286  
Tamarack      
Summary of company's equity investment      
Beginning balance $ 5,268   $ 5,268
Member’s distribution (509)    
Equity in income of unconsolidated affiliate 720    
Liquidation of investment $ (5,479)