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Debt Instrument, Covenant, Additional Capital Lease Obligation and Purchase Money Indebtedness Maximum

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Debt Instrument, Covenant, Additional Other Indebtedness, Maximum

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Debt Instrument, Covenant, Maximum Consolidated Capital Expenditure

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Debt Instrument, Covenant, Maximum First Lien Leverage Ratio

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Debt Instrument, Covenant, Repurchase of Capital Stock, Maximum

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Debt Instrument, Covenant, Tax Sharing Agreement, Distributions Percentage of Net Revenues, Maximum

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Debt Instrument, Periodic Payment, Principal, First Year

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Long-Term Debt - Term Loan Facility (Details) - USD ($)		3 Months Ended	18 Months Ended
Long-Term Debt - Term Loan Facility (Details) - USD ($)	Jan. 24, 2017	Mar. 31, 2019	Jul. 24, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term Debt		$ 538,221,000		$ 543,697,000
Debt Instrument, Covenant, Tax Sharing Agreement, Distributions Percentage of Net Revenues, Maximum	1.00%
Debt Instrument, Covenant, Repurchase of Capital Stock, Maximum	$ 1,000,000
Debt Instrument, Covenant, Additional Capital Lease Obligation and Purchase Money Indebtedness Maximum	40,000,000
Debt Instrument, Covenant, Additional Other Indebtedness, Maximum	$ 10,000,000
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Covenant, Maximum First Lien Leverage Ratio	500.00%
Debt Instrument, Covenant, Minimum Interest Coverage Ratio	200.00%
Debt Instrument, Covenant, Maximum Consolidated Capital Expenditure	$ 11,000,000
Allowed Add Back of Pro Forma EBITDA, First Quarter	108,400,000
Allowed Add Back of Pro Forma EBITDA, Second Quarter	77,500,000
Allowed Add Back of Pro Forma EBITDA, Third Quarter	$ 39,400,000
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility, Term A Loan [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 63,000,000		$ 64,800,000
Stated percentage		7.65%		768.00%
Commitment fee percent, after closing date			5.00%
Debt Instrument, Repayment Percent of Principal		2.50%
Debt Instrument, Periodic Payment, Principal, First Year		$ 1,800,000
Debt Instrument, Periodic Payment, Principal, Second Year and Thereafter		2,600,000
Repayments of Debt		1,800,000
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility, Term A Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	5.00%
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility, Term A Loan [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	4.00%
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility, Term B Loan [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 439,900,000		$ 440,800,000
Stated percentage		10.88%		10.96%
Debt Instrument, Repayment Percent of Principal		1.00%
Repayments of Debt		$ 1,200,000
Debt Instrument, Periodic Payment, Principal		$ 1,100,000
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility, Term B Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	8.25%
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility, Term B Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum
Debt Instrument [Line Items]
Stated percentage	1.00%
Montreign Operating [Member] \| Notes Payable to Banks [Member] \| Term Loan Facility, Term B Loan [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	7.25%