Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 35,985	$ 49,614
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of investment premiums, net	9,163	20,486
Gain on sale of investment securities, net	(976)	(15)
Loss (gain) on sale of non-covered other real estate owned	44	(713)
Gain on sale of covered other real estate owned	34	(457)
Valuation adjustment on non-covered other real estate owned	115	437
Valuation adjustment on covered other real estate owned	0	679
Provision for non-covered loan and lease losses	20,799	9,981
Provision for covered loan and lease losses	(132)	(2,840)
Proceeds from bank owned life insurance	187	1,173
Change in cash surrender value of bank owned life insurance	(2,717)	(2,801)
Change in FDIC indemnification asset	10,441	13,367
Depreciation, amortization and accretion	47,300	8,921
Increase in mortgage servicing rights	(7,770)	(11,110)
Change in mortgage servicing rights carried at fair value	4,113	346
Change in junior subordinated debentures carried at fair value	2,631	1,078
Stock-based compensation	8,682	2,222
Net (increase) decrease in trading account assets	1,036	(116)
Gain on sale of loans	(27,833)	(47,116)
Change in loans held for sale carried at fair value	(12,594)	16,801
Origination of loans held for sale	(855,951)	(1,000,688)
Proceeds from sales of loans held for sale	810,613	1,174,397
Excess tax benefits from the exercise of stock options	(1,719)	(49)
Change in other assets and liabilities:
Net decrease in other assets	(29,137)	29,545
Net increase in other liabilities	37,487	(20,189)
Net cash provided by operating activities	49,801	242,953
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of investment securities available for sale	(346,844)	(51,191)
Proceeds from investment securities available for sale	943,104	530,898
Proceeds from investment securities held to maturity	365	914
Redemption of restricted equity securities	2,755	1,331
Net non-covered loan and lease originations	(524,212)	(160,345)
Net covered loan and lease paydowns	36,438	47,744
Proceeds from sales of non-covered loans	159,439	53,264
Proceeds from insurance settlement on loss of property	0	575
Proceeds from disposals of furniture and equipment	52	139
Purchases of premises and equipment	(22,656)	(16,514)
Net proceeds from FDIC indemnification asset	(2,376)	3,065
Proceeds from sales of non-covered other real estate owned	7,000	11,210
Proceeds from sales of covered other real estate owned	298	8,126
Net cash paid in divestiture	(130,627)	0
Cash acquired in merger, net of cash consideration paid	(116,867)	0
Net cash used by investing activities	239,603	429,216
CASH FLOWS FROM FINANCING ACTIVITIES:
Net decrease in deposit liabilities	335,788	(422,723)
Net increase in securities sold under agreements to repurchase	(494,603)	39,372
Repayment of term debt	(47,004)	0
Repayment of junior subordinated debentures	0	(8,764)
Dividends paid on common stock	(33,883)	(16,931)
Excess tax benefits from stock based compensation	1,719	49
Proceeds from stock options exercised	5,193	846
Retirement of common stock	(6,617)	(2,811)
Net cash used by financing activities	(239,407)	(410,962)
Net increase in cash and cash equivalents	49,997	261,207
Cash and cash equivalents, beginning of period	790,423	543,787
Cash and cash equivalents, end of period	840,420	804,994
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest	21,957	21,825
Income taxes	6,486	13,100
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Change in unrealized gains on investment securities available for sale, net of taxes	17,363	(24,741)
Change in unrealized losses on investment securities held to maturity related to factors other than credit, net of taxes	57	32
Cash dividend declared on common stock and payable after period-end	32,674	16,907
Transfer of non-covered loans to non-covered other real estate owned	3,358	7,032
Transfer of covered loans to covered other real estate owned	40	2,554
Transfer of covered loans to non-covered loans	2,053	10,560
Transfer from FDIC indemnification asset to due from FDIC and other	1,440	3,168
Receivable from sales of covered other real estate owned	0	1,096
Assets acquired, including goodwill of $1,015,427	9,879,425	0
Liabilities assumed	$ 8,762,385	$ 0