CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 26,051	$ 21,947
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,100	3,700
Depreciation of premises and equipment	2,370	2,325
Foreclosed and repossessed property valuation adjustments	298	392
Net gain on sale of bank property	(358)	(208)
Net amortization of premium and discount	1,679	1,149
Net amortization of intangibles	555	705
Share-based compensation	1,404	1,037
Income from bank-owned life insurance	(1,969)	(1,446)
Net gains on loan sales and commissions on loans originated for others	(9,616)	(2,139)
Net realized gains on securities	(299)	(197)
Net impairment losses recognized in earnings	209	191
Net (gains) losses on interest rate swap contracts	(87)	6
Equity in (earnings) losses of unconsolidated subsidiaries	(114)	433
Proceeds from sales of loans	336,919	94,803
Loans originated for sale	(344,532)	(101,795)
(Increase) decrease in other assets	(7,567)	877
Decrease in other liabilities	1,711	(3,328)
Net cash provided by operating activities	8,754	18,452
Cash flows from investing activities:
Purchases of mortgage-backed securities available for sale	0	(94,352)
Payments to Acquire Available-for-sale Securities	0	(5,000)
Payments to Acquire Mortgage Backed Securities (MBS) categorized as Held-to-maturity	0	(11,954)
Proceeds from sale of mortgage-backed securities available for sale	6,247	42,783
Proceeds from sale of other investment securities available for sale	6,338	2,940
Maturities and principal payments of mortgage-backed securities available for sale	85,059	81,613
Maturities and principal payments of other investment securities available for sale	911	355
Maturities and principal payments of mortgage-backed securities held to maturity	8,138	106
Remittance of Federal Home Loan Bank stock	1,590	0
Net increase in loans	(103,402)	(90,613)
Purchases of loans, including purchased interest	(5,007)	(3,745)
Proceeds from the sale of property acquired through foreclosure or repossession	3,146	2,133
Purchases of premises and equipment	(4,513)	(2,237)
Net proceeds from the sale of bank property	1,571	1,279
Proceeds from bank-owed life insurance	1,419	0
Equity investments in real estate limited partnerships	0	(449)
Net cash provided by (used in) investing activities	1,497	(77,141)
Cash flows from financing activities:
Net increase in deposits	108,344	49,820
Net decrease in other borrowings	(19,529)	(2,401)
Proceeds from Federal Home Loan Bank advances	472,930	333,975
Repayment of Federal Home Loan Bank advances	(595,705)	(338,599)
Proceeds from the issuance of common stock under dividend reinvestment plan	0	754
Proceeds from the exercise of stock options and issuance of other compensation-related equity instruments	1,251	725
Tax benefit from stock option exercises and issuance of other compensation-related equity instruments	149	68
Cash dividends paid	(11,177)	(10,603)
Net cash (used in) provided by financing activities	(43,737)	33,739
Net decrease in cash and cash equivalents	(33,486)	(24,950)
Cash and cash equivalents at beginning of period	87,020	92,736
Cash and cash equivalents at end of period	53,534	67,786
Noncash Investing and Financing Activities:
Loans charged off	1,801	2,914
Loans transferred to property acquired through foreclosure or repossession	3,255	1,251
Supplemental Disclosures:
Interest payments	22,869	26,941
Income tax payments	$ 12,729	$ 9,799