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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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Subsequent Events (Details) - USD ($)				12 Months Ended
Subsequent Events (Details) - USD ($)	Mar. 19, 2021	Mar. 05, 2021	Feb. 16, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Proceeds from Divestiture of Businesses					$ 0	$ 0	$ 25,920,000
Letter of Credit					$ 14,100,000
Asset Impairment Charges						$ 1,200,000
Forecast [Member]
Subsequent Event [Line Items]
Quarterly dividend, value per share	$ 0.17
Quarterly dividend, amount declared		$ 22,300,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared			Feb. 16, 2021
Quarterly dividend, date to be paid	Mar. 19, 2021
Quarterly dividend, date of record		Mar. 05, 2021
Stock Redeemed or Called During Period, Value				$ 28.00
Stock Redeemed or Called During Period, Shares				0.0718