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Summarized Quarterly Financial Data (Unaudited) - Quarterly Operating Results (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 115,787	$ 114,092	$ 156,391	$ 143,791	$ 140,088	$ 140,335	$ 128,048	$ 120,806	$ 530,061	$ 529,277	$ 666,900
Gross profit	47,209	46,331	65,015	60,612	55,388	58,448	49,996	39,733	219,167	203,565	303,635
Operating income (loss)	(14,070)	(20,288)	562	(6,167)	(3,783)	(2,179)	(12,813)	(26,647)	(39,963)	(45,422)	37,386
Net income (loss)	$ (11,624)	$ (46,123)	$ 3,995	$ 770	$ (8,447)	$ 7,589	$ (7,670)	$ (10,814)	$ (52,982)	$ (19,342)	$ 23,840
Earnings (loss) per common share - basic	$ (0.25)	$ (0.96)	$ 0.08	$ 0.02	$ (0.18)	$ 0.16	$ (0.16)	$ (0.22)	$ (1.11)	$ (0.40)	$ 0.50
Earnings (loss) per common share - diluted	$ (0.25)	$ (0.96)	$ 0.08	$ 0.02	$ (0.18)	$ 0.16	$ (0.16)	$ (0.22)	$ (1.11)	$ (0.40)	$ 0.49

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