Quarterly Financial Information (Unaudited) - Quarterly Financial Results (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	$ 193,288	$ 205,274	$ 220,811	$ 218,025	$ 209,938	$ 197,886	$ 186,413	$ 191,660	$ 837,398	$ 785,897	$ 698,437
Gross profit	28,103	36,356	45,275	42,056	41,872	35,139	36,127	39,507	151,790	152,645	163,359
Net (loss) income	$ (70,461)	$ 3,004	$ (6,946)	$ 3,890	$ 7,184	$ 6,256	$ 10,450	$ 11,054	$ (70,513)	$ 34,944	$ 49,317
Earnings per common share:
Basic (USD per share)	$ (4.07)	$ 0.17	$ (0.40)	$ 0.23	$ 0.42	$ 0.36	$ 0.61	$ 0.64	$ (4.08)	$ 2.03	$ 2.89
Diluted (USD per share)	$ (4.07)	$ 0.17	$ (0.40)	$ 0.22	$ 0.42	$ 0.36	$ 0.60	$ 0.64	$ (4.08)	$ 2.02	$ 2.85