Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Consolidated Statements of Comprehensive Income [Abstract]
Net earnings	$ 2,649	$ 1,100	$ 8,013	$ 3,194
Unrealized gains and losses on securities available-for-sale:
Unrealized holding gains arising during the year, net of income tax expense: $496 and $1,068 for the three months ended September 30, 2012 and 2011, respectively; and $954 and $2,191 for the nine months ended September 30, 2012 and 2011, respectively	920	2,073	1,771	4,253
Reclassification adjustment for gains on sales of securities available-for-sale, net of income tax expense: $24 and $0 for the three months ended September 30, 2012 and 2011, respectively; and $71 and $34 for the nine months ended September 30, 2012 and 2011, respectively	(44)	0	(133)	(65)
Total other comprehensive income	876	2,073	1,638	4,188
Total comprehensive income	$ 3,525	$ 3,173	$ 9,651	$ 7,382