Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effect of Fourth Quarter Events [Line Items]
Net sales	$ 68,548	$ 64,303	$ 53,647	$ 61,736	$ 76,400	$ 88,863	$ 67,437	$ 66,555	$ 248,234	$ 299,255	$ 359,111
Gross profit	57,730	54,014	45,449	51,711	63,691	75,658	57,688	59,137	208,904	256,174	322,725
Income tax provision benefit (expense)	1,020	(38)	(27)	11,304	(220)	309	(42)	(42)	12,259	5	(26,582)
Net (loss) income	$ (16,580)	$ (19,417)	$ (8,466)	$ (4,821)	$ (7,476)	$ 12,379	$ (17,210)	$ (13,273)	$ (49,284)	$ (25,580)	$ (29,979)
Net income (loss) per common share - basic (in dollars per share)	$ (0.17)	$ (0.48)	$ (0.08)	$ (0.04)	$ (0.07)	$ 0.12	$ (0.16)	$ (0.12)	$ (0.77)	$ (0.24)	$ (0.28)
Net (loss) income per common share - diluted (in dollars per share)	$ (0.17)	$ (0.48)	$ (0.08)	$ (0.04)	$ (0.07)	$ 0.11	$ (0.16)	$ (0.12)	$ (0.77)	$ (0.24)	$ (0.28)
Revision of Prior Period, Error Correction, Adjustment
Effect of Fourth Quarter Events [Line Items]
Net sales	$ 800
Gross profit	800
Net (loss) income	$ 1,300
Net income (loss) per common share - basic (in dollars per share)	$ 0.01
Net (loss) income per common share - diluted (in dollars per share)	$ 0.01