Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities
Net income	$ 12,369	$ 7,438
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	5,300	7,950
Provision for depreciation and amortization	3,907	4,447
Deferred income taxes (benefit) expense	(781)	19
Amortization of securities premiums and accretion of discounts (net)	722	1,162
Losses (gains) on sales of available for sales securities (net)	358	(627)
Gains on sales/calls of held to maturity securities	(379)	(332)
Other-than-temporary impairment losses on investment securities	0	649
Proceeds from sales of other loans originated for sale	44,337	55,558
Loans originated for sale	(33,297)	(54,097)
Gains on sales of loans (net)	(811)	(953)
Loss on write-down on foreclosed real estate	27	257
Losses on sales of foreclosed real estate (net)	48	785
Losses on disposal of premises and equipment (net)	216	3
Stock-based compensation	807	752
Amortization of deferred loan origination fees and costs (net)	2,031	2,005
(Increase) decrease in other assets	(74)	4,026
Increase (decrease) in other liabilities	1,127	(2,018)
Net cash provided by operating activities	35,907	27,024
Securities available for sale:
Proceeds from principal repayments, calls and maturities	116,049	124,827
Proceeds from sales	76,262	252,563
Purchases	(157,777)	(378,959)
Securities held to maturity:
Proceeds from principal repayments, calls and maturities	62,629	141,416
Proceeds from sales	13,600	4,822
Purchases	(83,292)	(122,849)
Proceeds from sale of loans receivable	4,952	0
Proceeds from sales of foreclosed real estate	1,547	3,450
Increase in loans receivable (net)	(186,249)	(76,290)
(Purchase) redemption of restricted investment in bank stock (net)	(3,088)	3,077
Proceeds from sale of premises and equipment	316	14
Purchases of premises and equipment	(2,098)	(3,048)
Net cash used by investing activities	(157,149)	(50,977)
Financing Activities
(Decrease) increase in demand, interest checking, money market, and savings deposits (net)	(40,477)	193,994
Decrease in time and other noncore deposits (net)	(13,743)	(21,636)
Increase (decrease) in short-term borrowings (net)	203,000	(65,000)
Repayment of long-term borrowings	(25,000)	0
Proceeds from common stock options exercised	218	0
Proceeds from dividend reinvestment and common stock purchase plan	70	50
Tax benefit on exercise of stock options	34	0
Cash dividends on preferred stock	(60)	(60)
Net cash provided by financing activities	124,042	107,348
Increase in cash and cash equivalents	2,800	83,395
Cash and cash equivalents at beginning of year	56,582	55,073
Cash and cash equivalents at end of period	59,382	138,468
Supplemental disclosure of cash flow information:
Cash paid for interest on deposits and borrowings	6,211	8,049
Cash paid for income taxes	4,925	2,450
Supplemental schedule of noncash activities:
Transfer of loans to foreclosed assets	$ 2,732	$ 1,989