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Debt Instrument, Covenant, First Lien Gross Leverage Ratio

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Debt Instrument, Covenant, Net Leverage Ratio, Actual

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Debt Instrument, Repayment, Increase (Decrease) to Percent of Excess Cash Flow

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Debt Instrument, Repayment, Percent of Excess Cash Flow

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Number of Financing Arrangements

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Transactions Between Entities Under Common Control, Percentage of Undivided Interest

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

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

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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.

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Face (par) amount of the original debt instrument that was repurchased.

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Weighted average interest rate of debt outstanding.

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Estimated period for the anticipated transfer of gain (loss), net, from accumulated other comprehensive income into earnings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Nominal or face amount used to calculate payment on derivative.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Fair value of the amount outstanding under the credit facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Debt (Narrative) (Details)		3 Months Ended								9 Months Ended	12 Months Ended
Debt (Narrative) (Details)	Mar. 28, 2019 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2019 USD ($) Financing_Arrangement	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2020	Jan. 01, 2020 USD ($)	Jul. 31, 2018	Nov. 30, 2017 USD ($)
Debt Instrument [Line Items]
Undivided interest																			75.00%
Loss on Debt Extinguishment		$ (989,000)	$ 801,000	$ 1,500,000	$ 23,143,000	$ 773,000	$ 0	$ 1,723,000	$ 1,426,000		$ 24,455,000	$ 3,922,000	$ 0
Number of Financing Arrangements \| Financing_Arrangement										2
Collateral amount		9,289,000									9,289,000
Interest rate swap contract		154,000									154,000
Unrealized loss											117,000	0	0
Interest rate hedge, tax											$ (37,000)	0	$ 0
Estimated period for expected loss											12 months
Estimated gain reclassified into earnings											$ 64,000
Scenario, Forecast
Debt Instrument [Line Items]
Notional amount																	$ 150,000,000
Loans Payable \| Term Loan A
Debt Instrument [Line Items]
Maximum borrowing capacity			100,000,000							$ 100,000,000									$ 100,000,000
Amendment to basis points	0.50%
Repayment on line of credit												$ 11,250,000
Principal		$ 100,000,000									$ 100,000,000
Weighted average interest rate		5.55%				6.78%					5.55%	6.78%
Loans Payable \| Term Loan B
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 275,000,000							275,000,000									400,000,000
Amendment to basis points	1.50%
Repayment on line of credit										$ 110,000,000
Repayment, percent of excess cash flow												75.00%
Reduced maximum amount of the mandatory annual excess cash flow sweep										25.00%
Principal		$ 275,000,000									$ 275,000,000
Weighted average interest rate		6.30%				8.53%					6.30%	8.53%
Loans Payable \| Term Loan B \| Scenario, Forecast
Debt Instrument [Line Items]
Debt bearing fixed interest rate														$ 50,000,000	$ 150,000,000
Senior Notes \| Senior Secured Second Lien Notes due 2025
Debt Instrument [Line Items]
Principal		$ 300,000,000									$ 300,000,000								$ 300,000,000
Stated interest rate		11.00%	11.00%							11.00%	11.00%		11.00%					11.00%	11.00%
Debt repurchased		$ 52,648,000				$ 25,724,000					$ 52,648,000	$ 25,724,000
Secured Debt \| Other Asset-Backed Financing Maturing December 2020
Debt Instrument [Line Items]
Collateral amount		$ 5,772,000									$ 5,772,000
Weighted average interest rate		5.96%									5.96%
Secured Debt \| Other Asset-Backed Financing Maturing September 2024
Debt Instrument [Line Items]
Collateral amount		$ 3,517,000									$ 3,517,000
Weighted average interest rate		3.61%									3.61%
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 400,000,000																		$ 300,000,000
First lien gross leverage ratio, maximum		2.00									2.00
First lien gross leverage ratio, actual		1.19									1.19
Total net leverage ratio, actual		1.93									1.93
Fixed charge coverage ratio, minimum		1.10									1.10
Fixed charge coverage ratio		1.36									1.36
Outstanding borrowings		$ 0				0					$ 0	0
Letters of credit outstanding		69,588,000				54,065,000					69,588,000	54,065,000
Borrowings and issuance of letters of credit remaining capacity		$ 330,412,000				$ 245,935,000					$ 330,412,000	$ 245,935,000
Revolving Credit Facility \| Line of Credit \| Scenario, Forecast
Debt Instrument [Line Items]
First lien gross leverage ratio, maximum																1.75
Total net leverage ratio, maximum																2.75
Minimum \| Loans Payable \| Term Loan B
Debt Instrument [Line Items]
Repayment, percent of excess cash flow										0.00%
Maximum \| Loans Payable \| Term Loan B
Debt Instrument [Line Items]
Repayment, percent of excess cash flow										75.00%