CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Unearned Stock Grant Compensation [Member]	Treasury Stock [Member]	Total
Balance, beginning of period at Dec. 31, 2018	$ 55	$ 22,401	$ 57,414	$ 37,208	$ (7,535)	$ (186)	$ (7,985)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				(1,656)				$ (1,656)
Other comprehensive income, net of tax					17,326			17,326
Dividends on common stock				(403)
Dividends accrued on preferred stock				(299)
Restricted stock grants, net of forfeitures			396			(948)	552
Amortization of unearned compensation						191
Purchase of shares for treasury							(71)
Net shares acquired related to employee share-based compensation plans							(72)
Issuance of shares under stock plans			9				14
Balance, end of period at Sep. 30, 2019	55	22,401	57,819	34,850	9,791	(943)	(7,562)	$ 116,411
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared on common stock (in dollars per share)								$ (0.02)
Balance, beginning of period at Jun. 30, 2019	55	22,401	57,444	36,342	4,727	(150)	(8,049)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				(1,392)				$ (1,392)
Other comprehensive income, net of tax					5,064			5,064
Dividends on common stock				0
Dividends accrued on preferred stock				(100)
Restricted stock grants, net of forfeitures			372			(877)	505
Amortization of unearned compensation						84
Purchase of shares for treasury							0
Net shares acquired related to employee share-based compensation plans							(23)
Issuance of shares under stock plans			3				5
Balance, end of period at Sep. 30, 2019	55	22,401	57,819	34,850	9,791	(943)	(7,562)	$ 116,411
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared on common stock (in dollars per share)								$ 0
Balance, beginning of period at Dec. 31, 2019	55	22,401	57,820	36,020	10,459	(781)	(7,580)	$ 118,394
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				321				321
Other comprehensive income, net of tax					9,313			9,313
Dividends on common stock				0
Dividends accrued on preferred stock				(299)
Restricted stock grants, net of forfeitures			(377)			61	316
Amortization of unearned compensation						370
Purchase of shares for treasury							0
Net shares acquired related to employee share-based compensation plans							(91)
Issuance of shares under stock plans			(7)				14
Balance, end of period at Sep. 30, 2020	55	22,401	57,436	36,042	19,772	(350)	(7,341)	$ 128,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared on common stock (in dollars per share)								$ 0
Balance, beginning of period at Jun. 30, 2020	55	22,401	57,435	34,266	17,464	(466)	(7,261)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				1,876				$ 1,876
Other comprehensive income, net of tax					2,308			2,308
Dividends on common stock				0
Dividends accrued on preferred stock				(100)
Restricted stock grants, net of forfeitures			0			0	0
Amortization of unearned compensation						116
Purchase of shares for treasury							0
Net shares acquired related to employee share-based compensation plans							(81)
Issuance of shares under stock plans			1				1
Balance, end of period at Sep. 30, 2020	$ 55	$ 22,401	$ 57,436	$ 36,042	$ 19,772	$ (350)	$ (7,341)	$ 128,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared on common stock (in dollars per share)								$ 0