CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net earnings	$ 17,843	$ 20,821
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	15,179	10,730
Provision (negative provision) for credit losses	1,295	(6,345)
Gain on sale of other real estate owned	(2,602)	(2,479)
Provision for losses on other real estate owned	1,477	5,786
Gain on sale of leases	(504)	(1,393)
Gain on sale of premises and equipment	(11)	160
Gain on sale of securities	(409)
Other-than-temporary impairment loss on covered security		1,115
Earned stock compensation	4,145	3,256
Tax effect included in stockholders' equity of restricted stock vesting	(778)	(156)
Decrease in accrued and deferred income taxes, net	(3,860)	7,264
Decrease in FDIC loss sharing asset	9,463	18,786
(Increase) decrease in other assets	7,580	10,500
Decrease in accrued interest payable and other liabilities	(6,809)	(17,932)
Net cash provided by operating activities	42,009	50,113
Cash flows from investing activities:
Net cash and cash equivalents acquired (used) in acquisitions	273,013	(42,306)
Net decrease in loans and leases	200,023	204,368
Proceeds from sale of loans and leases	9,455	22,693
Securities available-for-sale:
Proceeds from maturities and paydowns	193,561	169,630
Proceeds from sales	12,810
Purchases	(388,946)	(186,387)
Net redemptions of Federal Home Loan Bank stock	7,515	4,370
Proceeds from sales of other real estate owned	15,869	26,213
Purchases of premises and equipment, net	(1,301)	(1,827)
Proceeds from sales of premises and equipment	22	691
Net cash provided by investing activities	322,021	197,445
Net increase (decrease) in deposits:
Noninterest-bearing	(9,132)	186,660
Interest-bearing	(277,868)	(172,784)
Net decrease in borrowings	(2,833)	(225,220)
Redemption of subordinated debentures		(18,558)
Repayment of acquired debt		(175,481)
Restricted stock surrendered	(2,267)	(1,374)
Tax effect included in stockholders' equity of restricted stock vesting	778	156
Cash dividends paid	(18,285)	(13,105)
Net cash used in financing activities	(309,607)	(419,706)
Net increase (decrease) in cash and cash equivalents	54,423	(172,148)
Cash and cash equivalents, beginning of period	164,404	295,617
Cash and cash equivalents, end of period	218,827	123,469
Supplemental disclosures of cash flow information:
Cash paid for interest	7,569	12,778
Cash paid for income taxes	13,573	6,229
Loans transferred to other real estate owned	9,090	19,721
Common stock issued for First California Financial Group acquisition	$ 242,268