Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - 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)	19,125
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 (in shares)	52
Share-based compensation	$ 889	208			1,097
Vested restricted stock issued (in shares)	16
Vested restricted stock issued	$ 208	(208)
Shares cancelled to pay tax liability (in shares)	(38)
Shares cancelled to pay tax liability	$ (400)				(400)
Other comprehensive income - pension				212	212
Net loss			(1,094)		(1,094)
Other comprehensive income - pension, net				212	212
Stock option exercised (in shares)	25
Stock option exercised	$ 62	68			130
Balance (in shares)	19,180
Balance (in shares) at Mar. 31, 2019	19,180
Balance at Mar. 31, 2019	$ 80,170	9,314	(37,028)	(21,592)	30,864
Balance (in shares) at Dec. 31, 2018	19,125
Balance at Dec. 31, 2018	$ 79,411	9,246	(35,934)	(21,804)	30,919
Other comprehensive income - pension					423
Net loss					(1,275)
Other comprehensive income - pension, net					423
Balance (in shares)	19,192
Balance (in shares) at Jun. 30, 2019	19,192
Balance at Jun. 30, 2019	$ 80,297	9,314	(37,209)	(21,381)	31,021
Balance (in shares)	19,180
Balance (in shares) at Mar. 31, 2019	19,180
Balance at Mar. 31, 2019	$ 80,170	9,314	(37,028)	(21,592)	30,864
Share-based compensation (in shares)
Share-based compensation		183			183
Vested restricted stock issued (in shares)	17
Vested restricted stock issued	$ 183	(183)
Shares cancelled to pay tax liability (in shares)	(5)
Shares cancelled to pay tax liability	$ (56)				(56)
Other comprehensive income - pension				211	211
Net loss			(181)		(181)
Other comprehensive income - pension, net				211	211
Balance (in shares)	19,192
Balance (in shares) at Jun. 30, 2019	19,192
Balance at Jun. 30, 2019	$ 80,297	9,314	(37,209)	(21,381)	31,021
Balance (in shares)	19,192
Balance (in shares)	19,238
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 (in shares)	68
Share-based compensation	$ 865	186			1,051
Vested restricted stock issued (in shares)	17
Vested restricted stock issued	$ 186	(186)
Shares cancelled to pay tax liability (in shares)	(42)
Shares cancelled to pay tax liability	$ (522)				(522)
Other comprehensive income - pension				206	206
Net loss			(1,074)		(1,074)
Other comprehensive income - pension, net				206	206
Balance (in shares)	19,281
Balance (in shares) at Mar. 31, 2020	19,281
Balance at Mar. 31, 2020	$ 81,135	9,184	(47,374)	(20,592)	22,353
Balance (in shares) at Dec. 31, 2019	19,238
Balance at Dec. 31, 2019	$ 80,606	9,184	(46,300)	(20,798)	22,692
Other comprehensive income - pension					412
Net loss					(1,231)
Other comprehensive income - pension, net					412
Balance (in shares)	19,291
Balance (in shares) at Jun. 30, 2020	19,291
Balance at Jun. 30, 2020	$ 81,251	9,184	(47,531)	(20,386)	22,518
Balance (in shares)	19,281
Balance (in shares) at Mar. 31, 2020	19,281
Balance at Mar. 31, 2020	$ 81,135	9,184	(47,374)	(20,592)	22,353
Share-based compensation (in shares)
Share-based compensation		163			163
Vested restricted stock issued (in shares)	14
Vested restricted stock issued	$ 163	(163)
Shares cancelled to pay tax liability (in shares)	(4)
Shares cancelled to pay tax liability	$ (47)				(47)
Other comprehensive income - pension				206	206
Net loss			(157)		(157)
Other comprehensive income - pension, net				206	206
Balance (in shares)	19,291
Balance (in shares) at Jun. 30, 2020	19,291
Balance at Jun. 30, 2020	$ 81,251	$ 9,184	$ (47,531)	$ (20,386)	$ 22,518
Balance (in shares)	19,291