Consolidated Statements of Comprehensive Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 6,088	$ 5,351	$ 17,905	$ 14,677
Other comprehensive earnings (loss), net of tax:
Unrealized gains (losses) on available-for-sale securities arising during period, net of taxes of $623, $417, $660 and $1,320, respectively	1,005	(674)	1,063	2,126
Reclassification adjustment for net gains included in net earnings, net of taxes of $7, $2, $71, and $112, respectively	(12)	(3)	(114)	(181)
Other comprehensive earnings (loss)	993	(677)	949	1,945
Comprehensive earnings	$ 7,081	$ 4,674	$ 18,854	$ 16,622