Short-Term Borrowings (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Summary of Short-Term Borrowings

Following is a summary of short-term borrowings:

December 31	2017		2016
(in thousands)
Securities sold under repurchase agreements	$	256,017	$	313,062
Federal Home Loan Bank advances	2,285,000		1,025,000
Federal funds purchased	1,000,000		1,037,000
Subordinated notes	137,320		127,948
Total short-term borrowings	$	3,678,337	$	2,503,010

Schedule of Weighted Average Interest Rates on Short-Term Borrowings

The following represents weighted average interest rates on short-term borrowings:

December 31	2017		2016		2015
Year-to-date average	1.16	%	0.61	%	0.42	%
Period-end	1.44	%	0.69	%	0.48	%