Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2020

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule of valuation and qualifying accounts

(in thousands)	Balance at Beginning of Year		Charged to Income		Deductions from Reserves(1)		Other Adjustments		Balance at End of Year
Allowance for doubtful accounts
Year ended December 31, 2020	$	942	$	313	$	(160)	$	(7)	$	1,088
Year ended December 31, 2019	$	1,119	$	146	$	(323)	$	—	$	942
Year ended December 31, 2018	$	977	$	321	$	(179)	$	—	$	1,119
Rebates and allowances
Year ended December 31, 2020	$	6,985	$	19,675	$	(16,706)	$	(604)	$	9,350
Year ended December 31, 2019	$	4,654	$	16,729	$	(14,237)	$	(161)	$	6,985
Year ended December 31, 2018	$	2,860	$	13,202	$	(11,047)	$	(361)	$	4,654

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(1)Amounts charged to deductions from allowance for doubtful accounts represent the write-off of uncollectible balances and represent payments for rebates and allowances.