Quarterly Financial Data (Unaudited) (Details) - 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	$ 174,694	$ 200,724	$ 193,896	$ 184,163	$ 170,303	$ 182,717	$ 162,523	$ 164,698	$ 753,477	$ 680,241	$ 695,790
Gross profit	49,857	46,479	33,993	39,874	37,527	40,316	26,759	37,202	170,203	141,804	165,707
Operating income (loss)	11,451	6,127	(3,926)	1,663	2,572	4,729	(9,870)	904	15,315	(1,665)	10,670
Net income (loss)	$ 7,027	$ 2,669	$ (5,061)	$ (1,005)	$ (11,107)	$ 959	$ 22,659	$ (587)	$ 3,630	$ 11,924	$ (10,323)
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.50	$ 0.19	$ (0.37)	$ (0.07)	$ (0.80)	$ 0.07	$ 1.61	$ (0.04)	$ 0.26	$ 0.85	$ (0.72)
Diluted (in dollars per share)	$ 0.49	$ 0.19	$ (0.37)	$ (0.07)	$ (0.80)	$ 0.07	$ 1.60	$ (0.04)	$ 0.26	$ 0.85	$ (0.72)