CONSOLIDATED STATEMENTS OF CHANGES IN CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total	Preferred Stock [Member] Series A Convertible Preferred Stock [Member]
BALANCE at Dec. 31, 2019	$ 141,377	$ 30,145	$ (82,860)	$ (42,058)	$ (3,456)	$ 43,148	$ 11,982
BALANCE (in shares) at Dec. 31, 2019	25,231,710						12,700
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 0	0	0	48,565	0	48,565	$ 0
Preferred stock dividend	0	(1,074)	0	(304)	0	(1,378)	0
Employee pension plan adjustments	0	0	0	0	(6)	(6)	0
Derivative qualifying as cash flow hedge	0	0	0	0	(703)	(703)	0
Stock-based compensation expense
Restricted stock	$ 0	1,686	0	0	0	1,686	$ 0
Restricted stock (in shares)	1,319,734						0
Net share settlement for equity-based compensation	$ 0	(245)	0	0	0	(245)	$ 0
Net share settlement for equity-based compensation (in shares)	(75,115)						0
BALANCE at Dec. 31, 2020	$ 141,377	30,512	(82,860)	6,203	(4,165)	91,067	$ 11,982
BALANCE (in shares) at Dec. 31, 2020	26,476,329						12,700
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 0	0	0	34,718	0	34,718	$ 0
Preferred stock dividend	0	0	0	(1,219)	0	(1,219)	0
Employee pension plan adjustments	0	0	0	0	2,047	2,047	0
Derivative qualifying as cash flow hedge	0	0	0	0	878	878	0
Stock-based compensation expense
Restricted stock	$ 0	2,889	0	0	0	2,889	$ 0
Restricted stock (in shares)	679,331						0
Net share settlement for equity-based compensation	$ 0	(962)	0	0	0	(962)	$ 0
Net share settlement for equity-based compensation (in shares)	(154,973)						0
BALANCE at Dec. 31, 2021	$ 141,377	$ 32,439	$ (82,860)	$ 39,702	$ (1,240)	$ 129,418	$ 11,982
BALANCE (in shares) at Dec. 31, 2021	27,000,687						12,700