Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Section S99
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
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- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands			12 Months Ended
	Feb. 08, 2018	Feb. 07, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Jun. 06, 2017
Debt Instrument [Line Items]
Long-term debt			$ 651,517		$ 527,883
Less—Amounts due within one year			(7,359)		(5,959)
Long-term debt			644,158		521,924
Payment in Kind (PIK) Note [Member]
Debt Instrument [Line Items]
Long-term debt			149,588		0
Unamortized discount			0	$ 3,000
Term Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net			0
First Lien Credit Facilities [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net						$ 9,200
First Lien Credit Facilities [Member] \| Medium-term Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 513,000		499,173		526,461
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net			0
Equipment, Long-Term Notes Payable [Member] \| Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt			$ 2,756		$ 1,422
Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net						$ 13,900
Base Rate [Member] \| First Lien Credit Facilities [Member] \| Medium-term Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			3.50%
Base Rate [Member] \| Senior Secured Credit Facilities [Member] \| Medium-term Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.00%
London Interbank Offered Rate (LIBOR) [Member] \| First Lien Credit Facilities [Member] \| Medium-term Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	425.00%	550.00%	3.50%
London Interbank Offered Rate (LIBOR) [Member] \| Senior Secured Credit Facilities [Member] \| Medium-term Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1090000000.00%	1340000000.00%