Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies [Abstract]

Off-Balance Sheet Financial Instruments

	December 31,
(in thousands)	2016		2015
Commitments to extend credit	$	5,878,290	$	5,937,701
Letters of credit		338,014		375,227

Future Minimum Lease Payments for Non-Cancelable Operating Leases

(in thousands)	Operating Leases
2017	$	12,728
2018		10,737
2019		8,918
2020		7,240
2021		6,074
Thereafter		22,669
Total minimum lease payments	$	68,366