SCHEDULE II (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Valuation on Allowance for Deferred Tax Assets
Balance at Beginning of Period	$ 9,250	$ 14,625	$ 16,889
Charged to (Reduction of) Costs and Expenses	525	(39)	656
Taken Against Allowance	0	(5,336)	(2,920)
Other (Deductions) Recoveries	0	0	0
Balance at End of Period	9,775	9,250	14,625
Allowance for Credit Losses
Allowance for Credit Losses
Balance at Beginning of Period	1,682	1,691	1,354
Charged to (Reduction of) Costs and Expenses	421	223	437
Taken Against Allowance	(180)	(232)	(100)
Other (Deductions) Recoveries	(700)	0	0
Balance at End of Period	1,223	1,682	1,691
Inventory E&O Reserves
Allowance for Credit Losses
Balance at Beginning of Period	22,430	18,817	13,548
Charged to (Reduction of) Costs and Expenses	8,431	10,554	7,522
Taken Against Allowance	(7,447)	(4,800)	0
Other (Deductions) Recoveries	(7,019)	(2,141)	(2,253)
Balance at End of Period	$ 16,395	$ 22,430	$ 18,817