Interim Financial Information - Narrative (Details) - USD ($)	3 Months Ended							4 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gain (Loss) on Extinguishment of Debt, Net of Tax Per Diluted Share	$ 0.29		$ 0.02		$ 0.02	$ 0.19
Gain on sale of business							$ 9,590,000		$ 0	$ 9,790,000	$ 0
Gain (Loss) on Disposition of Business, Net of Tax							$ 10,578,000
Gain (Loss) on Sale of Business, Net of Tax, Per Diluted Share							$ 0.31
Loss (gain) on debt extinguishment including debt finance charges and associated fees	$ 10,131,000		$ 709,000		$ 761,000	$ 6,599,000		$ 761,000	9,422,000	(7,360,000)	(6,165,000)
Gain (Loss) on Extinguishment of Debt, Net of tax	10,131,000		709,000		761,000	6,599,000
Goodwill, Impairment Loss, Net of Tax	$ 27,903,000
Goodwill, Impairment Loss, Net of Tax, Per Diluted Share	$ 0.80
Charges	$ 377,000	$ 547,000	1,552,000	$ 2,701,000	1,580,000	1,685,000	$ 1,392,000		2,534,000	7,358,000	11,829,000
Restructuring charges, net of tax	$ 277,000	$ 413,000	$ 1,376,000	$ 2,062,000	$ 1,092,000	$ 1,304,000	$ 1,181,000
Restructuring charges, net of tax, per diluted share	$ 0.01	$ 0.01	$ 0.04	$ 0.06	$ 0.03	$ 0.04	$ 0.03
Loss (gain) on debt extinguishment including debt finance charges and associated fees	$ 10,131,000		$ 709,000		$ 761,000	$ 6,599,000		$ 761,000	9,422,000	(7,360,000)	(6,165,000)
Net gain on convertible debt derivatives									$ 0	$ 0	$ (1,197,000)