CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities:
Net income	$ 29,052	$ 34,809
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,415	6,033
Credit for loan and lease losses	(1,016)	(1,670)
Share based compensation expense	1,101	1,307
Deferred income tax expense	1,119	2,945
Origination of loans held for sale	(90,531)	(219,153)
Proceeds from sales of loans held for sale	93,554	248,907
Gains on sales of loans held for sale	(1,314)	(4,147)
Loss on sales of other real estate owned	162	1,072
Investment securities gains	(8)	(118)
Net decrease (increase) in accrued interest receivable	255	(72)
Net (increase) decrease in other assets	(7,319)	6,441
Net increase in accrued expenses and other liabilities	7,683	2,010
Other - net	3,256	3,706
Net cash provided by operating activities	41,409	82,070
Investing activities:
Purchases of other equity securities		(2,776)
Purchases of investments held-to-maturity		(20,666)
Purchases of investments available-for-sale		(161,379)
Proceeds from other equity securities	3,615
Proceeds from maturities, calls and principal payments of investments held-to-maturity	2,293	9,959
Proceeds from maturities, calls and principal payments of investments available-for-sale	67,700	143,220
Net increase in loans and leases	(192,794)	(135,100)
Proceeds from the sales of other real estate owned	465	7,137
Expenditures for premises and equipment	(3,547)	(1,883)
Net cash used in investing activities	(122,268)	(161,488)
Financing activities:
Net increase in deposits	151,563	3,432
Net increase (decrease) in retail repurchase agreements and federal funds purchased	17,542	(33,752)
Proceeds from advances from FHLB	1,330,000	745,000
Repayment of advances from FHLB	(1,387,000)	(630,058)
Proceeds from issuance of common stock	440	48
Dividends paid	(14,154)	(11,590)
Net cash provided by financing activities	98,391	73,080
Net increase (decrease) in cash and cash equivalents	17,532	(6,338)
Cash and cash equivalents at beginning of period	74,427	86,406
Cash and cash equivalents at end of period	91,959	80,068
Supplemental Disclosures:
Interest payments	14,066	15,031
Income tax payments	11,908	12,470
Transfers from loans to other real estate owned	$ 971	$ 2,353