Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Summary of Long-Term Debt (Details)

v3.19.3
Long-Term Debt - Summary of Long-Term Debt (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Sep. 29, 2017
Debt Instrument [Line Items]      
Revolving credit facility $ 370,400,000 $ 321,000,000  
Second Lien Facility 200,000,000 200,000,000 $ 200,000,000
Long-term Debt 570,400,000 521,000,000  
Debt Instrument, Unamortized Discount (2,608,000) (3,159,000) (4,000,000.0)
Unamortized Debt Issuance Expense (5,347,000) (6,466,000) $ (8,200,000)
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net 562,445,000 511,375,000  
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums $ 7,955,000 $ 9,625,000