Long-Term Debt - Debt Repurchase Program Narratives (Details) - 6.125% Senior Notes - Senior Notes - USD ($)	Dec. 31, 2020	Jun. 16, 2020	Nov. 06, 2018
Equity, Class of Treasury Stock
Authorized debt repurchase program (up to)		$ 50,000,000.0
Stated interest rate (in percentage)	6.125%	6.125%	6.125%

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant