Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock Outstanding [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2016	3,891,897
Balance at Dec. 31, 2016	$ 105,592	$ (42,902)	$ (120)	$ 62,570
Net income (loss)		4,147		4,147
Unrealized holding gain (loss) on available-for-sale securities, net of tax			(35)	(35)
Total comprehensive income		4,147	(35)	$ 4,112
Purchase of treasury stock (in shares)	(100)			(72,471)
Purchase of treasury stock	$ (2)			$ (2)
Common stock dividends		(77)		(77)
Share-based compensation expense	$ 146			146
Vesting of restricted stock (in shares)	7,878
Share-based compensation expense	$ 146			146
Balance (in shares) at Dec. 31, 2017	3,899,675
Balance at Dec. 31, 2017	$ 105,736	(38,832)	(155)	66,749
Net income (loss)		3,196		3,196
Unrealized holding gain (loss) on available-for-sale securities, net of tax			(671)	(671)
Total comprehensive income		3,196	(671)	$ 2,525
Purchase of treasury stock (in shares)				0
Common stock dividends		(154)		$ (154)
Share-based compensation expense	$ 220			220
Vesting of restricted stock (in shares)	10,999
Share-based compensation expense	$ 220			220
Vesting of restricted stock
Balance (in shares) at Dec. 31, 2018	3,910,674
Balance at Dec. 31, 2018	$ 105,956	(35,790)	(826)	69,340
Net income (loss)		(2,817)		(2,817)
Unrealized holding gain (loss) on available-for-sale securities, net of tax			423	423
Total comprehensive income		(2,817)	423	$ (2,394)
Purchase of treasury stock (in shares)				0
Common stock dividends		(155)		$ (155)
Share-based compensation expense	$ 214			214
Vesting of restricted stock (in shares)	19,995
Share-based compensation expense	$ 214			214
Vesting of restricted stock
Transition adjustment related to adoption of ASC 842, net of tax		(11)		(11)
Balance (in shares) at Dec. 31, 2019	3,930,669
Balance at Dec. 31, 2019	$ 106,170	$ (38,773)	$ (403)	$ 66,994