Annual report pursuant to Section 13 and 15(d)

VIEs - Low Income Housing Tax Credit Partnerships (Details)

v3.3.1.900
VIEs - Low Income Housing Tax Credit Partnerships (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Low Income Housing Tax Credit Partnerships      
Variable Interest Entity [Line Items]      
Affordable housing tax credit investments $ 674,157 $ 576,381  
Less: amortization (248,657) (208,098)  
Net affordable housing tax credit investments 425,500 368,283  
Unfunded commitments 196,001 154,861  
Tax credits and other tax benefits recognized 59,614 51,317 $ 55,819
Proportional Amortization Method      
Variable Interest Entity [Line Items]      
Tax credit amortization expense included in provision for income taxes 42,951 39,021 32,789
Proportional amortization method      
Tax credit amortization expense included in provision for income taxes 42,951 39,021 32,789
Equity Method      
Equity method      
Tax credit investment losses included in noninterest income $ 355 $ 434 $ 1,176