Quarterly Financial Information (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
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 149,379	$ 154,276	$ 200,933	$ 150,469	$ 164,531	$ 167,094	$ 172,890	$ 122,454	$ 655,057	$ 626,969
Gross profit	27,390	27,692	37,128	29,162	30,601	31,303	33,063	22,192	121,372	117,159
Net (loss) income	$ 26,250	$ 3,064	$ 9,564	$ 3,690	$ (41,152)	$ 6,408	$ 5,434	$ (1,858)	$ 42,568	$ (31,168)
Basic (loss) earnings per common share (usd per share)	$ 2.52	$ 0.29	$ 0.92	$ 0.36	$ (3.97)	$ 0.62	$ 0.52	$ (0.18)	$ 4.09	$ (3.01)
Diluted (loss) earnings per common share (usd per share)	$ 2.46	$ 0.29	$ 0.90	$ 0.35	$ (3.97)	$ 0.61	$ 0.52	$ (0.18)	$ 4.00	$ (3.01)