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

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-Topic 210
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Percentage of principal amount of debt redeemed.

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Fair value amount of debt instrument that was repurchased.

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Debt (Debt Repurchases) (Details) - USD ($)		12 Months Ended
Debt (Debt Repurchases) (Details) - USD ($)	Jun. 12, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt		$ (4,795,000)	$ 0	$ 0
Amended Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 100,000,000.0
Loss on extinguishment of debt	$ (1,200,000)
Senior Notes
Debt Instrument [Line Items]
Stated interest rate		5.125%
Senior Notes \| 6.00% Senior Notes
Debt Instrument [Line Items]
Stated interest rate		6.00%
Senior Notes \| 5.875% Senior Notes
Debt Instrument [Line Items]
Stated interest rate		5.875%	5.875%
Debt instrument, repurchased face amount		$ 56,000,000.0
Percentage of principal amount redeemed		97.55%
Repurchase amount		$ 54,700,000
Loss on extinguishment of debt		$ 300,000
Senior Notes \| 5.125% Senior Notes
Debt Instrument [Line Items]
Stated interest rate		5.125%	5.125%