Schedule II Consolidated Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance, Beginning Balance	$ 1,268	$ 177
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense	187	1,216
Valuation Allowances and Reserves, Deductions	(503)	(125)
Valuation Allowances and Reserves, Balance, Ending Balance	952	1,268
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance, Beginning Balance	421	480
Valuation Allowances and Reserves, Deductions	(49)	(59)
Valuation Allowances and Reserves, Balance, Ending Balance	372	421
Allowance for Discounts and Returns [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance, Beginning Balance	1,600	1,425
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense	19,492	21,435
Valuation Allowances and Reserves, Deductions	(19,612)	(21,260)
Valuation Allowances and Reserves, Balance, Ending Balance	$ 1,480	$ 1,600