UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 7,826	$ 3,348
Unrealized gains on securities
Unrealized holding gain arising during the period	3,498	6,823
Reclassification adjustment for gain included in net income	0	(603)
Amortization of losses previously held as available for sale	6	852
Net unrealized gains on securities	3,504	7,072
Deferred tax expense
Unrealized holding gain arising during the period	1,225	2,114
Amortization of losses previously held as available for sale	2	290
Net deferred tax expense	1,227	2,404
Other comprehensive income	2,277	4,668
Comprehensive income	$ 10,103	$ 8,016