CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Comprehensive Income (Loss) [Abstract]
Net income	$ 1,657	$ 469
Available-for-sale securities:
Gross unrealized holding loss arising in the period	(1,446)	(1,222)
Related tax benefit	506	428
Less: reclassification adjustment for net realized gains included in net income	958	1
Related tax expense	(336)	0
Net effect on other comprehensive loss	(1,562)	(795)
Derivative financial instrument:
Fair value adjustment to derivative financial instrument	153	191
Related tax expense	(54)	(67)
Net effect on other comprehensive income	99	124
Total other comprehensive loss, net of tax	(1,463)	(671)
Total comprehensive income (loss)	$ 194	$ (202)