CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net earnings	$ 42,006	$ 36,909
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	23,768	18,349
Negative provision for credit losses	(2,872)	(8,486)
Gain on sale of other real estate owned	(4,006)	(4,542)
Provision for losses on other real estate owned	2,094	13,566
Gain on sale of leases	(1,108)	(1,525)
(Gain) loss on sale of premises and equipment	(15)	158
Gain on branch sale		(297)
Gain on sale of securities	(409)
Acquisition-related securities gain	(5,222)
Other-than-temporary impairment loss on covered security		1,115
Earned stock compensation	6,545	4,631
Tax effect included in stockholders' equity of restricted stock vesting	(985)	(224)
Decrease in accrued and deferred income taxes, net	4,267	6,423
Decrease in FDIC loss sharing asset	19,063	22,547
Decrease in other assets	6,254	3,262
Decrease in accrued interest payable and other liabilities	(22,952)	(19,156)
Net cash provided by operating activities	66,428	72,730
Cash flows from investing activities:
Net cash and cash equivalents acquired (used) in acquisitions	273,013	(86,931)
Net cash used in branch sale		(119,756)
Net decrease in loans and leases	221,779	200,080
Proceeds from sale of loans and leases	18,812	42,128
Securities available-for-sale:
Proceeds from maturities and paydowns	264,654	310,273
Proceeds from sales	12,810	45,639
Purchases	(504,936)	(320,936)
Net redemptions of Federal Home Loan Bank stock	12,549	6,595
Proceeds from sales of other real estate owned	28,918	43,881
Purchases of premises and equipment, net	(2,246)	(2,208)
Proceeds from sales of premises and equipment	26	700
Net cash provided by investing activities	325,379	119,465
Net increase (decrease) in deposits:
Noninterest-bearing	28,310	339,718
Interest-bearing	(405,166)	(224,165)
Net decrease in borrowings	(4,258)	(222,736)
Redemption of subordinated debentures		(18,558)
Repayment of acquired debt		(180,796)
Restricted stock surrendered	(2,415)	(1,424)
Tax effect included in stockholders' equity of restricted stock vesting	985	224
Cash dividends paid	(29,648)	(19,669)
Net cash used in financing activities	(412,192)	(327,406)
Net decrease in cash and cash equivalents	(20,385)	(135,211)
Cash and cash equivalents, beginning of period	164,404	295,617
Cash and cash equivalents, end of period	144,019	160,406
Supplemental disclosures of cash flow information:
Cash paid for interest	10,604	17,457
Cash paid for income taxes	16,703	17,884
Loans transferred to other real estate owned	12,754	32,244
Common stock issued for First California Financial Group acquisition	$ 242,268