UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net Income	$ 3,972	$ 2,688
Unrealized gains on securities
Unrealized gains on securities - Unrealized holding gain arising during the period	3,248	1,598
Amortization of losses previously held as available for sale	3	12
Net unrealized gains on securities	3,251	1,610
Deferred tax expense
Deferred tax expense - Unrealized holding gain arising during the period	1,137	543
Amortization of losses previously held as available for sale	1	4
Net deferred tax expense	1,138	547
Other comprehensive income	2,113	1,063
Comprehensive income	$ 6,085	$ 3,751