CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 45,115	$ 56,801	$ 50,704
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	31,509	25,792	20,084
(Negative provision) provision for credit losses	(4,210)	(12,819)	26,570
Gain on sale of other real estate owned	(5,201)	(5,786)	(9,140)
Provision for losses and valuation adjustments on other real estate owned	2,515	14,333	16,994
Gain on sale of leases	(1,791)	(2,767)
(Gain) loss on sale of premises and equipment	(21)	155	(23)
Gain on branch sale		(297)
Gain on sale of securities	(137)	(1,239)
Acquisition-related securities gain	(5,222)
Other-than-temporary impairment losses on covered securities		1,115
Earned stock compensation	21,246	5,999	7,896
Tax effect included in stockholders' equity of restricted stock vesting	(2,133)	(283)	937
Increase (decrease) in accrued and deferred income taxes, net	2,198	(3,737)	17,694
Decrease in FDIC loss sharing asset	29,192	37,712	21,165
(Increase) decrease in other assets	(9,403)	18,754	18,053
Decrease in accrued interest payable and other liabilities	(53,405)	(15,753)	(661)
Net cash provided by operating activities	50,252	117,980	170,273
CASH FLOWS FROM INVESTING ACTIVITIES:
Resolution of goodwill matter with FDIC			7,636
Net cash and cash equivalents acquired (used) in acquisitions	273,013	(87,098)
Net cash used in branch sale		(119,756)
Net decrease in loans and leases	275,740	232,549	450,492
Proceeds from sales of loans and leases	33,824	58,691	2,495
Securities available-for-sale:
Proceeds from maturities and paydowns	306,536	415,854	231,898
Proceeds from sales	22,415	90,745
Purchases	(550,211)	(485,860)	(658,310)
Net redemptions of Federal Home Loan Bank stock	18,705	10,392	8,934
Proceeds from sale of other real estate owned	36,490	59,614	61,954
Capitalized costs to complete other real estate owned			(125)
Purchases of premises and equipment, net	(3,604)	(4,914)	(5,936)
Proceeds from sales of premises and equipment	31	704	27
Net cash provided by investing activities	412,939	170,921	99,065
Net increase (decrease) in deposits:
Noninterest-bearing	18,068	271,934	220,237
Interest-bearing	(547,081)	(234,608)	(292,482)
Net increase (decrease) in borrowings	101,250	(228,107)
Redemption of subordinated debentures		(18,558)
Repayment of acquired debt		(180,796)
Tax effect included in stockholders' equity of restricted stock vesting	2,133	283	(937)
Restricted stock surrendered	(13,537)	(1,475)	(1,465)
Cash dividends paid	(41,006)	(28,787)	(7,626)
Net cash used in financing activities	(480,173)	(420,114)	(82,273)
Net (decrease) increase in cash and cash equivalents	(16,982)	(131,213)	187,065
Cash and cash equivalents at beginning of year	164,404	295,617	108,552
Cash and cash equivalents at end of year	147,422	164,404	295,617
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	13,275	21,614	33,000
Cash paid during the year for income taxes, net of refunds	27,665	40,772	19,083
Supplemental disclosure of noncash investing and financing activities:
Transfer of loans to other real estate owned	15,416	40,207	68,683
Common stock issued for First California Financial Group acquisition	$ 242,268