Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statements of Comprehensive Income [Abstract]
Net earnings	$ 2,195	$ 1,890
Other comprehensive (loss) income, net of tax:
Unrealized net holding (loss) gain on securities	(3,120)	138
Reclassification adjustment for net gain on securities recognized in net earnings	0	(1)
Other comprehensive (loss) income	(3,120)	137
Comprehensive (loss) income	$ (925)	$ 2,027