Annual report pursuant to Section 13 and 15(d)

Accrued Expenses (Details)

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Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Summary of accrued expenses    
Accrued interest $ 7,170 $ 4,245
Accrued expenses 1,919 3,863
Accrued compensation 1,632 2,679
Total accrued expenses $ 10,721 $ 10,787