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Condensed 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 $ 9,063 $ 10,332 $ 24,122 $ 17,766
Unrealized gains on securities:        
Unrealized holding gains arising during period 2,542 3,658 4,325 7,954
Tax effect (969) (1,299) (1,649) (2,820)
Reclassification adjustment for gains included in net income     (61) (333)
Tax effect     23 115
Net of tax amount 1,573 2,359 2,638 4,916
Unrealized losses on derivative financial instruments qualifying as cash flow hedges:        
Unrealized holding losses arising during period (140) (716) (407) (972)
Tax effect 53 254 152 344
Reclassification adjustment for amounts included in interest expense 74 78 218 229
Tax effect (28) (27) (80) (80)
Net of tax amount (41) (411) (117) (479)
Other comprehensive income, net of tax 1,532 1,948 2,521 4,437
Comprehensive income $ 10,595 $ 12,280 $ 26,643 $ 22,203