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 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Low Income Housing Tax Credit Partnerships          
Variable Interest Entity [Line Items]          
Affordable housing tax credit investments $ 725,193   $ 725,193   $ 674,157
Less: amortization (272,667)   (272,667)   (248,657)
Net affordable housing tax credit investments 452,526   452,526   425,500
Unfunded commitments 210,297   210,297   $ 196,001
Tax credits and other tax benefits recognized 18,150 $ 14,434 36,434 $ 30,181  
Proportional Amortization Method          
Variable Interest Entity [Line Items]          
Tax credit amortization expense included in provision for income taxes 12,499 11,218 24,905 22,292  
Equity Method          
Variable Interest Entity [Line Items]          
Tax credit investment (gains) losses included in non-interest income $ 132 $ 147 $ 264 $ 294