Consolidated Statement of Shareholders’ Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock and Additional Paid in Capital [Member]	Retained Earnings [Member]	Total
BALANCE - December 31, 20 at Dec. 31, 2017	$ 68,974	$ 72,119	$ 141,093
BALANCE - December 31, 20 (in Shares) at Dec. 31, 2017	7,399
Net income (Loss)		3,251	3,251
Dividends paid on common stock		(815)	(815)
Stock compensation expense	$ 299		299
Stock compensation expense (in Shares)	8
BALANCE - December 31, 20 at Mar. 31, 2018	$ 69,273	74,555	143,828
BALANCE - December 31, 20 (in Shares) at Mar. 31, 2018	7,407
BALANCE - December 31, 20 at Dec. 31, 2017	$ 68,974	72,119	141,093
BALANCE - December 31, 20 (in Shares) at Dec. 31, 2017	7,399
Net income (Loss)			5,900
BALANCE - December 31, 20 at Jun. 30, 2018	$ 69,437	76,316	145,753
BALANCE - December 31, 20 (in Shares) at Jun. 30, 2018	7,415
BALANCE - December 31, 20 at Mar. 31, 2018	$ 69,273	74,555	143,828
BALANCE - December 31, 20 (in Shares) at Mar. 31, 2018	7,407
Net income (Loss)		2,649	2,649
Dividends paid on common stock		(888)	(888)
Stock compensation expense	$ 164		164
Stock compensation expense (in Shares)	8
BALANCE - December 31, 20 at Jun. 30, 2018	$ 69,437	76,316	145,753
BALANCE - December 31, 20 (in Shares) at Jun. 30, 2018	7,415
BALANCE - December 31, 20 at Dec. 31, 2018	$ 68,387	83,188	151,575
BALANCE - December 31, 20 (in Shares) at Dec. 31, 2018	7,368
Net income (Loss)		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 - December 31, 20 at Mar. 31, 2019	$ 68,849	85,907	154,756
BALANCE - December 31, 20 (in Shares) at Mar. 31, 2019	7,391
BALANCE - December 31, 20 at Dec. 31, 2018	$ 68,387	83,188	151,575
BALANCE - December 31, 20 (in Shares) at Dec. 31, 2018	7,368
Net income (Loss)			6,762
BALANCE - December 31, 20 at Jun. 30, 2019	$ 69,013	88,028	157,041
BALANCE - December 31, 20 (in Shares) at Jun. 30, 2019	7,394
BALANCE - December 31, 20 at Mar. 31, 2019	$ 68,849	85,907	154,756
BALANCE - December 31, 20 (in Shares) at Mar. 31, 2019	7,391
Net income (Loss)		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 - December 31, 20 at Jun. 30, 2019	$ 69,013	$ 88,028	$ 157,041
BALANCE - December 31, 20 (in Shares) at Jun. 30, 2019	7,394