Condensed Consolidated Statement of Shareholders’ Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock and Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
BALANCE at Dec. 31, 2018	$ 68,387	$ 83,188	$ 151,575
BALANCE (in Shares) at Dec. 31, 2018	7,368
Net income		3,605	3,605
Dividends paid on common stock		(886)	(886)
Stock issued and options exercised including related tax benefits	$ 294		294
Stock issued and options exercised including related tax benefits (in Shares)	17
Stock compensation expense	$ 168		168
Stock compensation expense (in Shares)	6
BALANCE at Mar. 31, 2019	$ 68,849	85,907	154,756
BALANCE (in Shares) at Mar. 31, 2019	7,391
BALANCE at Dec. 31, 2018	$ 68,387	83,188	151,575
BALANCE (in Shares) at Dec. 31, 2018	7,368
Net income			6,762
BALANCE at Jun. 30, 2019	$ 69,013	88,028	157,041
BALANCE (in Shares) at Jun. 30, 2019	7,394
BALANCE at Mar. 31, 2019	$ 68,849	85,907	154,756
BALANCE (in Shares) at Mar. 31, 2019	7,391
Net income		3,156	3,156
Dividends paid on common stock		(1,035)	(1,035)
Stock compensation expense	$ 164		164
Stock compensation expense (in Shares)	3
BALANCE at Jun. 30, 2019	$ 69,013	88,028	157,041
BALANCE (in Shares) at Jun. 30, 2019	7,394
BALANCE at Dec. 31, 2019	$ 67,993	96,663	164,656
BALANCE (in Shares) at Dec. 31, 2019	7,355
Net income		1,188	1,188
Dividends paid on common stock		(1,030)	(1,030)
Repurchase of common stock	$ (1,000)		(1,000)
Repurchase of common stock (in Shares)	(50)
Stock compensation expense	$ 202		202
Stock compensation expense (in Shares)	4
BALANCE at Mar. 31, 2020	$ 67,195	96,821	164,016
BALANCE (in Shares) at Mar. 31, 2020	7,309
BALANCE at Dec. 31, 2019	$ 67,993	96,663	164,656
BALANCE (in Shares) at Dec. 31, 2019	7,355
Net income			3,630
BALANCE at Jun. 30, 2020	$ 67,390	98,240	165,630
BALANCE (in Shares) at Jun. 30, 2020	7,312
BALANCE at Mar. 31, 2020	$ 67,195	96,821	164,016
BALANCE (in Shares) at Mar. 31, 2020	7,309
Net income		2,442	2,442
Dividends paid on common stock		(1,023)	(1,023)
Stock compensation expense	$ 195		195
Stock compensation expense (in Shares)	3
BALANCE at Jun. 30, 2020	$ 67,390	$ 98,240	$ 165,630
BALANCE (in Shares) at Jun. 30, 2020	7,312