Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)

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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Debt Instrument [Line Items]      
Cash and cash equivalents $ 20,813   $ 39,154
Debt instrument, face amount 793,752   774,797
Total available liquidity 50,700    
Right-of-use assets, net 21,939 $ 24,800  
Operating lease, liability 25,015 $ 24,400  
Other debt      
Debt Instrument [Line Items]      
Debt instrument, face amount 17,380   $ 1,707
Other debt | 2017 Credit Agreement      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 29,900