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, 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
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
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)
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
Transition adjustment related to adoption of ASC 842, net of tax		(11)		(11)
Vesting of restricted stock
Balance (in shares) at Dec. 31, 2019	3,930,669
Balance at Dec. 31, 2019	$ 106,170	(38,773)	(403)	66,994
Net income (loss)		(3,819)		(3,819)
Unrealized holding gain (loss) on available-for-sale securities, net of tax			(115)	(115)
Total comprehensive income		(3,819)	(115)	(3,934)
Share-based compensation expense	$ 159			159
Vesting of restricted stock (in shares)	12,903
Share-based compensation expense	$ 159			159
Vesting of restricted stock
Balance (in shares) at Dec. 31, 2020	3,943,572
Balance at Dec. 31, 2020	$ 106,329	$ (42,592)	$ (518)	$ 63,219