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, 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 at Dec. 31, 2017				9,825	(9,825)
Reclassification of certain tax effects from accumulated other comprehensive income at January 1, 2018 at Dec. 31, 2017				(2,100)	2,100
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				(905)				$ (905)
Other comprehensive income (loss), net of tax					(8,788)			(8,788)
Dividends on common stock				(407)
Dividends accrued on preferred stock				(299)
Restricted stock grants, net of forfeitures			(88)			135	(47)
Amortization of unearned compensation						192
Purchase of shares for treasury	0	0					(463)
Net shares acquired related to employee share-based compensation plans							(223)
Issuance of shares under stock plans	0	0	12				16
Balance, end of period at Sep. 30, 2018	55	22,401	57,419	37,107	(6,762)	(252)	(7,850)	$ 102,118
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, 2018	55	22,401	57,416	36,273	(6,429)	(322)	(7,727)
Cumulative effect of adoption of updated accounting guidance for equity financial instruments at January 1, 2018 at Jun. 30, 2018				0	0
Reclassification of certain tax effects from accumulated other comprehensive income at January 1, 2018 at Jun. 30, 2018				0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				934				$ 934
Other comprehensive income (loss), net of tax					(333)			(333)
Dividends on common stock				0
Dividends accrued on preferred stock				(100)
Restricted stock grants, net of forfeitures			0			0	0
Amortization of unearned compensation						70
Purchase of shares for treasury	0	0					(103)
Net shares acquired related to employee share-based compensation plans							(26)
Issuance of shares under stock plans	0	0	3				6
Balance, end of period at Sep. 30, 2018	55	22,401	57,419	37,107	(6,762)	(252)	(7,850)	$ 102,118
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared on common stock (in dollars per share)								$ 0
Balance, beginning of period at Dec. 31, 2018	55	22,401	57,414	37,208	(7,535)	(186)	(7,985)	$ 101,372
Cumulative effect of adoption of updated accounting guidance for equity financial instruments at January 1, 2018 at Dec. 31, 2018				0	0
Reclassification of certain tax effects from accumulated other comprehensive income at January 1, 2018 at Dec. 31, 2018				0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				(1,656)				(1,656)
Other comprehensive income (loss), 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	0	0					(71)
Net shares acquired related to employee share-based compensation plans							(72)
Issuance of shares under stock plans	0	0	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)
Cumulative effect of adoption of updated accounting guidance for equity financial instruments at January 1, 2018 at Jun. 30, 2019				0	0
Reclassification of certain tax effects from accumulated other comprehensive income at January 1, 2018 at Jun. 30, 2019				0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)				(1,392)				$ (1,392)
Other comprehensive income (loss), 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	0					0
Net shares acquired related to employee share-based compensation plans							(23)
Issuance of shares under stock plans	0	0	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