Quarterly report pursuant to Section 13 or 15(d)

Other Accrued Liabilities - Schedule of Other Accrued Liabilities (Details)

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Other Accrued Liabilities - Schedule of Other Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Accrued payroll and related liabilities $ 6,044 $ 4,459
Interest payable 27,648 14,446
Income taxes payable 3,396 2,742
Operating lease liabilities 3,728  
Other 6,577 9,438
Total Other accrued liabilities $ 47,393 $ 31,085