CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 5,944	$ 6,276	$ 17,767	$ 16,015
Other comprehensive income, net of tax:
Unrealized holding gains arising during the period	4,512	7,665	6,877	12,686
Tax provision	(1,773)	(3,011)	(2,701)	(4,997)
Unrealized holding gains arising during the period, net of tax	2,739	4,654	4,176	7,689
Less: Reclassification adjustment for net other-than-temporary impairment losses on securities	0	0	49	179
Tax benefit	0	0	(19)	(70)
Other-than-temporary impairment losses on securities, net of tax	0	0	30	109
Less: Reclassification adjustment for net gains on sales of securities	0	(124)	(375)	(521)
Tax provision	0	48	146	203
Gains on sales of securities, net of tax	0	(76)	(229)	(318)
Other comprehensive income, net of tax	2,739	4,578	3,977	7,480
Total net comprehensive income	$ 8,683	$ 10,854	$ 21,744	$ 23,495