CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total		Common Stock [Member]	Treasury Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss, Net [Member]
Balance at beginning of period at Dec. 31, 2017			$ 266	$ (78,233)	$ 145,707	$ 40,312	$ (12,950)
New common shares issued for exercise of stock options			0		56
Treasury stock, purchased at cost (161,554 shares for the three months ended June 30, 2019 and 273,865 and 105,663 shares for the six months ended June 30, 2019 and 2018, respectively)				(445)
Stock option expense					8
Net income	$ 3,511					3,511
Cash dividend declared on common stock						(632)
Other comprehensive income (loss)	(717)	[1]					(717)
Balance at end of period at Jun. 30, 2018	96,883		266	(78,678)	145,771	43,191	(13,667)
Balance at beginning of period at Mar. 31, 2018			266	(78,678)	145,739	41,807	(13,324)
New common shares issued for exercise of stock options			0		28
Treasury stock, purchased at cost (161,554 shares for the three months ended June 30, 2019 and 273,865 and 105,663 shares for the six months ended June 30, 2019 and 2018, respectively)				0
Stock option expense					4
Net income	1,744					1,744
Cash dividend declared on common stock						(360)
Other comprehensive income (loss)	(343)	[1]					(343)
Balance at end of period at Jun. 30, 2018	96,883		266	(78,678)	145,771	43,191	(13,667)
Balance at beginning of period at Dec. 31, 2018	97,977		266	(80,579)	145,782	46,733	(14,225)
New common shares issued for exercise of stock options			0		96
Treasury stock, purchased at cost (161,554 shares for the three months ended June 30, 2019 and 273,865 and 105,663 shares for the six months ended June 30, 2019 and 2018, respectively)				(1,162)
Stock option expense					5
Net income	3,670					3,670
Cash dividend declared on common stock						(785)
Other comprehensive income (loss)	1,675	[1]					1,675
Balance at end of period at Jun. 30, 2019	101,476		266	(81,741)	145,883	49,618	(12,550)
Balance at beginning of period at Mar. 31, 2019			266	(81,055)	145,870	48,262	(14,282)
New common shares issued for exercise of stock options			0		11
Treasury stock, purchased at cost (161,554 shares for the three months ended June 30, 2019 and 273,865 and 105,663 shares for the six months ended June 30, 2019 and 2018, respectively)				(686)
Stock option expense					2
Net income	1,792					1,792
Cash dividend declared on common stock						(436)
Other comprehensive income (loss)	1,732	[1]					1,732
Balance at end of period at Jun. 30, 2019	$ 101,476		$ 266	$ (81,741)	$ 145,883	$ 49,618	$ (12,550)

[1] Amounts in parentheses indicate debits on the Consolidated Balance Sheets.