Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2018	19,125
Balance at Dec. 31, 2018	$ 79,411	$ 9,246	$ (35,934)	$ (21,804)	$ 30,919
Share-based compensation expense		705			705
Issuance of shares for incentive plan (in shares)	77
Issuance of shares for incentive plan	$ 951				951
Vested restricted stock issued (in shares)	66
Vested restricted stock issued	$ 705	(705)
Shares canceled to pay tax liability (in shares)	(55)
Shares canceled to pay tax liability	$ (653)				(653)
Stock options exercised (in shares)	25
Stock options exercised	$ 192	(62)			130
Other comprehensive income-pension				1,006	1,006
Net loss			(10,366)		(10,366)
Pension, net of income taxes of $0				1,006	1,006
Balance (in shares) at Dec. 31, 2019	19,238
Balance at Dec. 31, 2019	$ 80,606	9,184	(46,300)	(20,798)	22,692
Share-based compensation expense		676			676
Issuance of shares for incentive plan (in shares)	68
Issuance of shares for incentive plan	$ 865				865
Vested restricted stock issued (in shares)	60
Vested restricted stock issued	$ 676	(676)
Shares canceled to pay tax liability (in shares)	(54)
Shares canceled to pay tax liability	$ (662)				(662)
Other comprehensive income-pension				(900)	(900)
Net loss			(2,604)		(2,604)
Pension, net of income taxes of $0				(900)	(900)
Balance (in shares) at Dec. 31, 2020	19,312
Balance at Dec. 31, 2020	$ 81,485	$ 9,184	$ (48,904)	$ (21,698)	$ 20,067