Borrowings (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Schedule of Other Borrowings

A summary of the Corporation's short- and long-term borrowings follows:

	September 30, 2017				December 31, 2016
(Dollars in thousands)	Amount		Weighted Average Rate (1)		Amount		Weighted Average Rate (1)
Securities sold under agreements to repurchase with customers:
Securities sold under agreements to repurchase with customers	$	414,597	0.44	%	$	343,047	0.16	%
Short-term borrowings:
FHLB advances: 1.20% - 1.22% fixed-rate notes	1,900,000		1.21		825,000		0.65
Long-term borrowings:
FHLB advances: 0.92% - 7.44% fixed-rate notes due 2017 to 2020(2)	339,255		1.28		438,538		1.24
Securities sold under agreements to repurchase: 1.48% - 2.75% fixed-rate notes due in 2017(3)	3,005		2.75		19,144		3.17
Line-of-credit: floating-rate based on one-month LIBOR plus 1.75%	39,914		2.98		124,625		2.52
Subordinated debt obligations: floating-rate based on three-month LIBOR plus 1.45% - 2.85% due 2034 to 2035(4)	11,390		3.49		11,285		3.14
Subordinated debt obligations: floating-rate based on three-month LIBOR plus 3.25% due in 2032(5)	4,281		4.55		4,255		4.25
Total long-term borrowings	397,845		1.56		597,847		1.63
Total borrowings	$	2,712,442	1.14	%	$	1,765,894	0.89	%

⁽¹⁾  Weighted average rate presented is the contractual rate which excludes premiums and discounts related to purchase accounting.

⁽²⁾  The September 30, 2017 balances include advances payable of $338.9 million and purchase accounting premiums of $0.4 million. The December 31, 2016 balance includes advances payable of $437.8 million and purchase accounting premiums of $0.7 million.

⁽³⁾  The September 30, 2017 balance includes advances payable of $3.0 million and purchase accounting premiums of $5 thousand. The December 31, 2016 balance includes advance payable of $19.0 million and purchase accounting premiums of $0.1 million.

⁽⁴⁾  The September 30, 2017 balance includes advances payable of $15.0 million and purchase accounting discounts of $3.6 million. The December 31, 2016 balance includes advances payable of $15.0 million and purchase accounting discounts of $3.7 million.

⁽⁵⁾  The September 30, 2017 balance includes advances payable of $5.0 million and purchase accounting discounts of $0.7 million. The December 31, 2016 balance includes advances payable of $5.0 million and purchase accounting discounts of $0.7 million.

Schedule of Securities Sold Under Agreements to Repurchase

The remaining contractual maturity, excluding purchase accounting adjustments, of long-term securities under agreement to repurchase, is as follows:

	September 30, 2017
	Remaining Contractual Maturities of the Agreements
(Dollars in thousands)	Overnight and continuous		Up to 30 Days		30-90 Days		Greater than 90 Days		Total
Securities sold under agreements to repurchase	$	—	$	3,000	$	—	$	—	$	3,000
Total borrowings	$	—	$	3,000	$	—	$	—	$	3,000
Amounts related to securities sold under agreements to repurchase not included in offsetting disclosure in Note 10									$	3,000