CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net sales	$ 105,033	$ 121,527	$ 188,444	$ 215,679
Cost of sales	86,012	101,850	166,872	188,684
Gross profit	19,021	19,677	21,572	26,995
Selling, general and administrative expense	8,504	8,366	18,510	15,590
Other income, net	(167)	(34)	(635)	(11)
Operating income	10,684	11,345	3,697	11,416
Interest expense, net	12,476	11,315	25,955	22,302
Non-operating other income, net	(128)	(868)	(803)	(644)
Income (loss) before benefit for income taxes	(1,664)	898	(21,455)	(10,242)
Benefit for income taxes	(1,299)	(5,733)	(1,638)	(5,333)
Net income (loss)	(365)	6,631	(19,817)	(4,909)
Dividends on convertible preferred stocks	75	75	150	150
Net loss attributable to common stockholders	$ (9,634)	$ (1,530)	$ (37,972)	$ (20,897)
Basic and dilutive net loss per common share	$ (0.34)	$ (0.05)	$ (1.35)	$ (0.75)
Series E Preferred Stock [Member]
Dividends on Series E redeemable preferred stock	$ 8,689	$ 7,589	$ 16,996	$ 14,845
Accretion of Series E redeemable preferred stock	$ 505	$ 497	$ 1,009	$ 993