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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2017	$ 41	$ 57,772	$ 30,214	$ (405)	$ 87,622
Net earnings			2,099		2,099
Other comprehensive income loss				(4,840)	(4,840)
Dividends paid			(821)		(821)
Stock-based compensation		54			54
Adjustment of common stock			7	(7)
Exercise of stock options		334			334
Balance at Mar. 31, 2018	41	58,160	31,499	(5,252)	84,448
Balance at Dec. 31, 2018	44	63,775	32,073	(3,991)	91,901
Net earnings			2,183		2,183
Other comprehensive income loss				3,569	3,569
Dividends paid			(875)		(875)
Stock-based compensation		69			69
Balance at Mar. 31, 2019	$ 44	$ 63,844	$ 33,381	$ (422)	$ 96,847

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