XML 69 R59.htm IDEA: XBRL DOCUMENT v3.4.0.3
Intangible Assets (Textual) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Finite-Lived Intangible Assets [Line Items]      
Goodwill and Identifiable Intangible Assets Acquired $ (500)    
Goodwill 286,867 $ 287,393 $ 180,128
Intangible Assets (Textual) [Abstract]      
Impairment valuation allowance     200
Core deposit intangible assets [Member]      
Intangible Assets (Textual) [Abstract]      
Impairment valuation allowance 0    
Estimated Future Amortization Expense, Fiscal Year Maturity [Abstract]      
2016 3,200    
2017 3,800    
2018 3,600    
2019 3,400    
2020 2,900    
2021 and thereafter 8,600    
Mortgage servicing rights [Member]      
Intangible Assets (Textual) [Abstract]      
Impairment valuation allowance $ 0 $ 0 $ 0