Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Comprehensive Income [Abstract]
Net earnings	$ 19,110us-gaap_NetIncomeLoss	$ 14,176us-gaap_NetIncomeLoss	$ 9,642us-gaap_NetIncomeLoss
Unrealized gains (losses) on securities available-for-sale:
Unrealized holding gains (losses) arising during the year	4,687	(12,481)	831
Less: reclassification adjustment for net gains on sales of securities available-for-sale	(128)	(234)	(204)
Total other comprehensive income (loss)	4,559	(12,715)	627
Income tax effect related to items of other comprehensive income	(1,596)us-gaap_OtherComprehensiveIncomeLossTax	4,450us-gaap_OtherComprehensiveIncomeLossTax	(220)us-gaap_OtherComprehensiveIncomeLossTax
Total other comprehensive income (loss), net of tax	2,963	(8,265)	407
Total comprehensive income	$ 22,073us-gaap_ComprehensiveIncomeNetOfTax	$ 5,911us-gaap_ComprehensiveIncomeNetOfTax	$ 10,049us-gaap_ComprehensiveIncomeNetOfTax

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