Schedule II - Consolidated Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance at beginning of period		$ 242	$ 952
Additions charged to costs and expenses		302	452
Deductions	[1]	69	(1,162)
Balance at end of period		613	242
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Balance at beginning of period		298	372
Additions charged to costs and expenses		0	0
Deductions			(74)
Balance at end of period			298
Allowance for Discounts and Returns [Member]
Balance at beginning of period		1,818	1,480
Additions charged to costs and expenses		26,454	23,223
Deductions		(25,757)	(22,885)
Balance at end of period		$ 2,515	$ 1,818

[1] Amount charged off, net of recoveries