Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Accrued Expenses and Other Liabilities [Abstract]
Accrued interest payable	$ 11,973	$ 8,056
Net current tax payable	51	152
Net deferred tax payable	0	2,078
Accrued expenses	4,404	5,259
Total accrued expenses and other liabilities	$ 16,428	$ 15,545