Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net sales	$ 14,759	$ 38,889	$ 49,736	$ 78,356
Cost of sales	13,019	30,677	40,921	61,844
Gross profit	1,740	8,212	8,815	16,512
Selling, general, and administrative expenses	6,281	7,424	12,146	14,696
Impairment	0	6,760	0	6,760
Restructuring expenses	273	734	1,193	825
Operating loss	(4,814)	(6,706)	(4,524)	(5,769)
Other income (expense):
Other, net	18	25	(6)	43
Interest expense	(624)	(1,332)	(2,289)	(2,432)
Other expense, net	(606)	(1,307)	(2,295)	(2,389)
(Loss) before income tax (benefit)	(5,420)	(8,013)	(6,819)	(8,158)
Income tax (benefit)	(1,103)	(389)	(1,366)	(346)
Net loss	$ (4,317)	$ (7,624)	$ (5,453)	$ (7,812)
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ (0.44)	$ (0.78)	$ (0.56)	$ (0.80)
Diluted (in dollars per share)	(0.44)	(0.78)	(0.56)	(0.80)
Dividends declared per share (in dollars per share)	$ 0	$ 0	$ 0	$ 0.05