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, 2018	$ 55	$ 22,401	$ 57,414	$ 37,208	$ (7,535)	$ (186)	$ (7,985)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				(386)				$ (386)
Other comprehensive income, 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 per share (in dollars per share)								$ (0.02)
Net income (loss)				12,169				$ 12,169
Other comprehensive income, net of tax					14,541			14,541
Dividends on common stock				0
Dividends accrued on preferred stock				(399)
Restricted stock grants, net of forfeitures			(376)			60	316
Amortization of unearned compensation						437
Purchase of shares for treasury							0
Net shares acquired related to employee share-based compensation plans							(91)
Issuance of shares under stock plans			(7)				16
Balance, end of year at Dec. 31, 2020	$ 55	$ 22,401	$ 57,437	$ 47,790	$ 25,000	$ (284)	$ (7,339)	$ 145,060
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared on common stock per share (in dollars per share)								$ 0