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Commitments and Contingencies (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Funding Commitments    
Capital Commitments $ 129,003 $ 114,193
Less: Paid (68,632) (54,164)
Unpaid commitment 60,371 60,029
Less: Amount Held in Escrow (38,463) (48,575)
Unfunded Commitment $ 21,908 $ 11,454