v2.4.0.8
Business Combinations narrative (Details) (USD $)
 7 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended
Dec. 31, 2011
Dec. 31, 2011
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Apr. 02, 2013
West Coast Bancorp [Member]
Dec. 31, 2013
West Coast Bancorp [Member]
Dec. 31, 2012
West Coast Bancorp [Member]
Aug. 05, 2011
Bank of Whitman [Member]
location
Dec. 31, 2012
Bank of Whitman [Member]
location
May 27, 2011
First Heritage Bank [Member]
location
Dec. 31, 2012
First Heritage Bank [Member]
May 20, 2011
Summit Bank [Member]
Dec. 31, 2012
Summit Bank [Member]
May 27, 2011
Scenario, Previously Reported [Member]
First Heritage Bank [Member]
May 20, 2011
Scenario, Previously Reported [Member]
Summit Bank [Member]
Business Acquisition [Line Items]                                
Business Combination, Purchase Price Allocation, Goodwill Amount           $ 228,398,000         $ 4,023,000   $ 1,892,000      
Business Acquisition, Purchase Price Allocation, Loans Covered By Loss Sharing                     8,225,000   2,162,000   8,300,000 2,700,000
Business Acquisition, Effective Date of Acquisition           Apr. 01, 2013     Aug. 05, 2011   May 27, 2011   May 20, 2011      
Business Combination, Acquired Receivables, Fair Value           1,407,798,000     200,041,000   81,488,000   69,783,000   81,900,000 71,400,000
Number Of Branch Locations To Be Acquired                 9   5          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net           312,393,000     1,830,000              
Gain on bank acquisitions, net of tax     0 0 1,830,000       1,800,000              
Business Combination, Purchase Price Allocation, Amortizable Intangible Assets           15,257,000     3,943,000   1,337,000   509,000      
Business Combination, Acquisition Related Costs             25,500,000 1,800,000                
Number Of Branch Locations Excluded From Operating Results                   11            
Percentage of loss shared by FDIC                       80.00%   80.00%    
FDIC Percentage Of Loss Recoveries                       80.00%   80.00%    
Business Acquisition, Purchase Price Allocation, FDIC Indemnification Asset                     38,531,000   30,203,000   38,100,000 27,200,000
Business Combination, Purchase Price Allocation, Other Assets           75,820,000     2,447,000   3,657,000   1,813,000   1,700,000 786,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Acquired Loans (369,000) (1,700,000)                            
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Loans Covered By Loss Sharing (61,000) (509,000)                            
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, FDIC Indemnification Asset 427,000 3,000,000                            
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets 1,900,000 1,000,000                            
Business Acquisition, Purchase Price Allocation, Liabilities, Deposits           1,883,407,000     401,127,000   159,525,000   123,279,000      
Business Acquisition, Purchase Price Allocation, Federal Home Loan Bank Advances           $ 128,885,000     $ 32,949,000   $ 5,003,000   $ 7,772,000