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SUPPLEMENTAL BALANCE SHEET INFORMATION - Prepaid Expenses and Other (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Prepaid expenses and other    
Prepaid insurance $ 2,218 $ 813
Escrow deposits 0 10,046
Other 4,256 4,422
Prepaid expenses and other $ 6,474 $ 15,281