CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - 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 year at Dec. 31, 2017	$ 55	$ 22,401	$ 57,495	$ 30,993	$ 9,751	$ (579)	$ (7,133)
Cumulative effect of adoption of updated accounting guidance for equity financial instruments at January 1, 2018 (ASU 2016-01 [Member]) at Dec. 31, 2017				9,825	(9,825)
Reclassification of certain tax effects from accumulated other comprehensive income at January 1, 2018 (ASU 2018-02 [Member]) at Dec. 31, 2017				(2,100)	2,100
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				(704)				$ (704)
Other comprehensive income (loss), net of tax					(9,561)			(9,561)
Dividends on common stock				(407)
Dividends accrued on preferred stock				(399)
Restricted stock grants, net of forfeitures			(96)			149	(53)
Amortization of unearned compensation						244
Purchase of shares for treasury							(597)
Net shares acquired related to employee share-based compensation plans							(223)
Issuance of shares under stock plans			15				21
Balance, end of year at Dec. 31, 2018	55	22,401	57,414	37,208	(7,535)	(186)	(7,985)	$ 101,372
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared on common stock (in dollars per share)								$ (0.02)
Net income (loss)				(386)				$ (386)
Other comprehensive income (loss), net of tax					17,994			17,994
Dividends on common stock				(403)
Dividends accrued on preferred stock				(399)
Restricted stock grants, net of forfeitures			396			(948)	552
Amortization of unearned compensation						353
Purchase of shares for treasury							(71)
Net shares acquired related to employee share-based compensation plans							(92)
Issuance of shares under stock plans			10				16
Balance, end of year 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]
Dividends declared on common stock (in dollars per share)								$ (0.02)