CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Dec. 31, 2017		$ 153,966	$ 17,716	$ (728)	$ 37,777	$ 106,293	$ (7,092)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		4,913				4,913
Other comprehensive income (loss), net of taxes		(1,189)					(1,189)
Reclassification of certain income tax effects from AOCI	[1]	0				0	0
Common stock shares issued		121	10		111
Restricted stock grants		13	17		(4)
Restricted stock compensation expense		186			186
Cash dividends declared		(1,405)				(1,405)
Ending Balance at Mar. 31, 2018		156,605	17,743	(728)	38,070	109,801	(8,281)
Beginning Balance at Dec. 31, 2017		153,966	17,716	(728)	37,777	106,293	(7,092)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		10,420
Ending Balance at Jun. 30, 2018		160,307	17,753	(728)	38,193	113,772	(8,683)
Beginning Balance at Mar. 31, 2018		156,605	17,743	(728)	38,070	109,801	(8,281)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		5,507				5,507
Other comprehensive income (loss), net of taxes		(320)					(320)
Reclassification of certain income tax effects from AOCI	[1]	0				82	(82)
Common stock shares issued		133	10		123
Restricted stock grants		0	0		0
Restricted stock compensation expense		0			0
Cash dividends declared		(1,618)				(1,618)
Ending Balance at Jun. 30, 2018		160,307	17,753	(728)	38,193	113,772	(8,683)
Beginning Balance at Dec. 31, 2018		168,137	17,772	(728)	38,448	121,862	(9,217)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		5,864				5,864
Other comprehensive income (loss), net of taxes		1,274					1,274
Common stock shares issued		13	9		4
Restricted stock grants		0	0		0
Restricted stock compensation expense		126			126
Cash dividends declared		(1,621)				(1,621)
Ending Balance at Mar. 31, 2019		173,793	17,781	(728)	38,578	126,105	(7,943)
Beginning Balance at Dec. 31, 2018		168,137	17,772	(728)	38,448	121,862	(9,217)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		12,330
Ending Balance at Jun. 30, 2019		180,884	17,831	(728)	39,264	130,809	(6,292)
Beginning Balance at Mar. 31, 2019		173,793	17,781	(728)	38,578	126,105	(7,943)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		6,466				6,466
Other comprehensive income (loss), net of taxes		1,651					1,651
Common stock shares issued		149	11		138
Restricted stock grants		391	39		352
Restricted stock compensation expense		196			196
Cash dividends declared		(1,762)				(1,762)
Ending Balance at Jun. 30, 2019		$ 180,884	$ 17,831	$ (728)	$ 39,264	$ 130,809	$ (6,292)

[1] In January 2018, the Corporation adopted ASU 2018-02, as a result, the Corporation made a policy election to release income tax effects, as a result of the Tax Act, from AOCI to retained earnings.