CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock	Deferred Compensation Obligation Under Rabbi Trust	Retained Earnings	Accumulated Other Comprehensive Income	Stock Held by Rabbi Trust	Treasury Stock	Total
Beginning balance at Dec. 31, 2018	$ 150,419	$ 1,647	$ 35,192	$ (167)	$ (1,647)	$ 0	$ 185,444
Beginning balance (in shares) at Dec. 31, 2018	9,532,943
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			5,823				5,823
Other comprehensive income (loss)				876			876
Funding of Supplemental Director Retirement Plan		42			(42)
Treasury shares purchased						(1,926)	(1,926)
Treasury shares purchased (in shares)	(88,091)
Restricted stock granted (in shares)	41,832
Restricted stock forfeited (in shares)	(15,954)
Compensation expense related to stock option and restricted stock grants	$ 190						190
Dividends declared on common stock			(712)				(712)
Ending balance at Mar. 31, 2019	$ 150,609	1,689	40,303	709	(1,689)	(1,926)	189,695
Ending balance (in shares) at Mar. 31, 2019	9,470,730
Beginning balance at Dec. 31, 2019	$ 151,165	1,852	54,706	(1,510)	(1,852)	(5,132)	$ 199,229
Beginning balance (in shares) at Dec. 31, 2019	9,357,994						9,357,994
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			5,128				$ 5,128
Other comprehensive income (loss)				(9,024)			(9,024)
Funding of Supplemental Director Retirement Plan		30			(30)
Restricted stock granted (in shares)	59,939
Compensation expense related to stock option and restricted stock grants	$ 378						378
Dividends declared on common stock			(797)				(797)
Ending balance at Mar. 31, 2020	$ 151,543	$ 1,882	$ 59,037	$ (10,534)	$ (1,882)	$ (5,132)	$ 194,914
Ending balance (in shares) at Mar. 31, 2020	9,417,933						9,417,933