Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - ALLL Attributable to Loans by Portfolio Segment (Details)

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - ALLL Attributable to Loans by Portfolio Segment (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Portion of ALLL balance:        
Attributable to loans collectively evaluated for impairment $ 636,173 $ 616,867    
Attributable to loans individually evaluated for impairment 36,407 21,546    
Total ALLL balance 672,580 638,413 $ 613,719 $ 597,843
Portion of loan and lease ending balance:        
Collectively evaluated for impairment 66,026,233 65,903,783    
Individually evaluated for impairment 883,583 873,514    
Financing Receivable Evaluated For Impairment 66,999,927 66,879,677    
Commercial        
Portion of ALLL balance:        
Attributable to loans collectively evaluated for impairment 455,789 440,566    
Attributable to loans individually evaluated for impairment 24,519 10,525    
Total ALLL balance 480,308 451,091 422,441 398,753
Portion of loan and lease ending balance:        
Collectively evaluated for impairment 34,753,138 34,841,609    
Individually evaluated for impairment 425,793 415,624    
Financing Receivable Evaluated For Impairment 35,269,042 35,359,613    
Consumer        
Portion of ALLL balance:        
Attributable to loans collectively evaluated for impairment 180,384 176,301    
Attributable to loans individually evaluated for impairment 11,888 11,021    
Total ALLL balance 192,272 187,322 $ 191,278 $ 199,090
Portion of loan and lease ending balance:        
Collectively evaluated for impairment 31,273,095 31,062,174    
Individually evaluated for impairment 457,790 457,890    
Financing Receivable Evaluated For Impairment 31,730,885 31,520,064    
Purchased credit-impaired        
Portion of loan and lease ending balance:        
Collectively evaluated for impairment 90,111 102,380    
Purchased credit-impaired | Commercial        
Portion of loan and lease ending balance:        
Collectively evaluated for impairment 90,111 102,380    
Purchased credit-impaired | Consumer        
Portion of loan and lease ending balance:        
Collectively evaluated for impairment $ 0 $ 0