Amount of Interest Costs Reduction as a result of Debt Redemption

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Debt Instrument, Issue Price Percentage

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Interest paid long term debt.

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Percentage of Notes Registered under the Securities Act of 1933

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Restrictive Covenants Exception for Dividend or Distribution Amount during fiscal year

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Restrictive Covenants Exception for total Dividend Payment and other Restricted Payments

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Total Debt Redemption Costs on 25% Note Redemption

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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

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Date the debt instrument was issued, in CCYY-MM-DD format.

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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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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Percentage of principal amount of debt redeemed.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Gross amount of debt extinguished.

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Aggregate amount of interest paid or due on all long-term debt.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Long-Term Debt - Additional Information (Narrative) (Details) - USD ($) $ in Thousands						3 Months Ended	12 Months Ended
	Aug. 25, 2019	Jun. 23, 2017	Apr. 15, 2017	Apr. 15, 2014	Apr. 12, 2011	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 19, 2017
Debt Instrument [Line Items]
Repayments of Secured Debt	$ 50,000
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	25.00%
Annual Interest Costs Reduction as a result of Debt Redemption	$ 3,800
Total Debt Redemption Costs on 25% Note Redemption						$ 1,900
Payment for Debt Extinguishment or Debt Prepayment Cost	$ 1,700
Write-off of debt issuance costs						$ 200	$ 184	$ 0	$ 430
Long-term Debt, Gross							150,000
6.75% Senior Secured Notes [Member] \| Senior Secured Notes
Debt Instrument [Line Items]
Private placement date		Jun. 23, 2017
Debt Instrument, Face Amount		$ 200,000
Debt Instrument, Interest Rate, Stated Percentage		6.75%
Debt Issuance Costs, Gross		$ 4,300
Debt Instrument, Issue Price Percentage		100.00%
Percentage of Notes Registered under the Securities Act of 1933										99.80%
Term of payments of interest on notes		semi-annually
Interest expense on note							12,300	13,500	$ 7,000
Interest Paid Long Term Debt							12,300	13,800
Long-term Debt, Gross							150,000	200,000
8.75% Senior Secured Notes [Member] \| Senior Secured Notes
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 200,000
Debt Instrument, Interest Rate, Stated Percentage		8.75%
Extinguishment of Debt, Amount		$ 120,000	$ 30,000	$ 50,000
Debt Instrument, Redemption Price, Percentage			100.00%
Debt Instrument, Issue Price Percentage					100.00%
Term of payments of interest on notes					semi-annually
Interest expense on note								$ 6,700
Oppenheimer [Member] \| 6.75% Senior Secured Notes [Member] \| Senior Secured Notes
Debt Instrument [Line Items]
Debt Issuance Costs, Gross		3,000
Third Party [Member] \| 6.75% Senior Secured Notes [Member] \| Senior Secured Notes
Debt Instrument [Line Items]
Debt Issuance Costs, Gross		$ 1,300
Maximum [Member] \| 6.75% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Restrictive Covenants Exceptions							20,000
Restrictive Covenants Exception for total Dividend Payment and other Restricted Payments							$ 10,000