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Equity Method Investment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]      
Percentage of owned joint venture Investment in nonconsolidated affiliate 50.00%    
Investment in unconsolidated affiliate $ 831   $ 798
Equity in net income of unconsolidated affiliate $ 33 $ 108