Valuation and Qualifying Accounts - Summarized Activity in Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 10,000	$ 8,000	$ 7,700
Additions Charged to Expense	2,800	16,000	14,000
Deductions from the Reserve	(6,300)	(14,000)	(13,700)
Balance at End of Year	$ 6,500	$ 10,000	$ 8,000