Consolidated Statements of Comprehensive Income (Loss) (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statements of Comprehensive Income (unaudited) [Abstract]
Net earnings	$ 4,116	$ 3,663	$ 10,974	$ 7,091
Unrealized gains (losses) on securities available-for-sale:
Unrealized holding gains (losses) arising during the year	1,574	(8,993)	4,520	(10,108)
Less: reclassification adjustment for gains on sales of securities available-for-sale	(128)	0	(128)	(204)
Total other comprehensive income (loss), before tax	1,446	(8,993)	4,392	(10,312)
Income tax effect related to items of other comprehensive income (loss)	(506)	3,148	(1,537)	3,609
Total other comprehensive income (loss), net of tax	940	(5,845)	2,855	(6,703)
Total comprehensive income (loss)	$ 5,056	$ (2,182)	$ 13,829	$ 388