Quarterly report pursuant to Section 13 or 15(d)

VIEs - Low Income Housing Tax Credit Partnership (Details)

v3.5.0.2
VIEs - Low Income Housing Tax Credit Partnership (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Low Income Housing Tax Credit Partnerships          
Variable Interest Entity [Line Items]          
Affordable housing tax credit investments $ 854,077   $ 854,077   $ 674,157
Less: amortization (285,895)   (285,895)   (248,657)
Net affordable housing tax credit investments 568,182   568,182   425,500
Unfunded commitments 298,679   298,679   $ 196,001
Tax credits and other tax benefits recognized 21,200 $ 16,412 57,634 $ 46,592  
Proportional Amortization Method          
Variable Interest Entity [Line Items]          
Tax credit amortization expense included in provision for income taxes 13,608 10,942 38,513 33,235  
Equity Method          
Variable Interest Entity [Line Items]          
Tax credit investment (gains) losses included in non-interest income $ 132 $ (86) $ 396 $ 208