Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
OPERATING ACTIVITIES
Net income	$ 20,016	$ 17,596	$ 7,026
Adjustments to reconcile income from continuing operations to net cash (used in) provided by operating activities:
Provision for loan losses	10,250	12,000	28,500
Depreciation and amortization of premises and equipment	3,680	3,256	2,436
Securities gains	(1,813)	(2,491)	(3,928)
Income from life insurance policies, net	(786)	(625)	(1,135)
Deferred income tax (benefit) provision	(2,808)	2,079	(2,430)
Proceeds from sale of loans	554,286	370,681	493,147
Gains on sales of loans, net	(10,322)	(6,335)	(8,176)
Originations of loans held for sale	(624,294)	(376,674)	(484,395)
Amortization of premiums on investment securities	8,104	8,914	6,993
Accretion of discounts on investment securities	(711)	(467)	(559)
(Increase) Decrease in accrued interest receivable	(15)	1,442	721
(Decrease) Increase in accrued interest payable	(415)	(250)	23
(Decrease) Increase in due to factored clients		(91,543)	9,142
(Decrease) Increase in accrued expenses and other liabilities	(414)	623	8,742
(Increase) Decrease in other assets	(2,268)	3,110	(8,139)
Loss on OREO	61		64
Net cash (used in) provided by operating activities	(47,449)	(58,684)	48,032
INVESTING ACTIVITIES
Purchase of premises and equipment	(2,611)	(10,972)	(8,687)
Net decrease (increase) in interest-bearing deposits with other banks	13,562	(85,945)	(3,545)
Net increase in loans held in portfolio	(202,467)	(181,334)	(126,361)
Net decrease (increase) in short-term factored receivables	20,238	11,007	(21,862)
Proceeds from sale of other real estate	677	193	1,259
Proceeds from calls/sales of securities—available for sale	181,767	286,276	486,191
Proceeds from calls of securities—held to maturity	266,162	322,500	142,380
Proceeds from sales of securities—held to maturity		2,141
Proceeds from prepayments, redemptions or maturities of securities—held to maturity	36,794	47,567	64,327
Proceeds from redemptions of Federal Home Loan Bank Stock	1,250	1,089	977
Purchases of securities—held to maturity	(281,442)	(379,731)	(209,964)
Proceeds from prepayments, redemptions or maturities—available for sale	563,095	347,745	210,749
Purchases of securities—available for sale	(770,352)	(503,633)	(744,344)
Purchases of Federal Home Loan Bank stock	(236)	(210)	(1,860)
Net cash used in investing activities	(173,563)	(143,307)	(210,740)
FINANCING ACTIVITIES
Net increase in noninterest-bearing demand deposits	158,551	195,510	23,953
Net increase (decrease) in savings, NOW, money market deposits	136,269	3,216	(29,808)
Net (decrease) increase in time deposits	(15,807)	42,581	172,952
Net decrease in Federal funds purchased		(15,000)	(26,000)
Net (decrease) increase in securities sold under agreements to repurchase	(19,363)	24,297	6,968
Net increase (decrease) in commercial paper and other short-term borrowings	1,860	(4,393)	(51,928)
(Decrease) Increase in long-term borrowings	(21,468)	(21,440)	14,173
Proceeds from exercise of stock options			403
Proceeds from issuance of common shares		36,454	64,881
Cash dividends paid on common shares	(11,132)	(11,122)	(8,873)
Cash dividends paid on preferred shares		(945)	(2,100)
Net redemption of preferred shares and common share warrants		(42,945)
Net cash provided by financing activities	228,910	206,213	164,621
Net increase in cash and due from banks	7,898	4,222	1,913
Cash and due from banks—beginning of year	31,046	26,824	24,911
Cash and due from banks—end of year	38,944	31,046	26,824
Supplemental disclosure of cash flow information:
Interest paid	11,396	13,237	15,559
Income taxes paid	7,527	5,748	4,011
Loans held for sale transferred to portfolio	2,465	1,004	1,264
Loans in portfolio transferred to other real estate	318	2,048	533
Due to brokers on purchases of securities held to maturity		$ 943	$ 4,998