Borrowings (Tables)

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Schedule of Other Borrowings

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

	June 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	$	310,042	0.26	%	$	343,047	0.16	%
Short-term borrowings:
FHLB advances: 0.96% - 1.40% fixed-rate notes	2,050,000		1.02		825,000		0.65
Long-term borrowings:
FHLB advances: 0.92% - 7.44% fixed-rate notes due 2017 to 2020(2)	351,324		1.30		438,538		1.24
Securities sold under agreements to repurchase: 1.48% - 2.75% fixed-rate notes due in 2017(3)	9,048		2.11		19,144		3.17
Line-of-credit: floating-rate based on one-month LIBOR plus 1.75%	59,854		2.80		124,625		2.52
Subordinated debt obligations: floating-rate based on three-month LIBOR plus 1.45% - 2.85% due 2034 to 2035(4)	11,354		3.42		11,285		3.14
Subordinated debt obligations: floating-rate based on three-month LIBOR plus 3.25% due in 2032(5)	4,272		4.40		4,255		4.25
Total long-term borrowings	435,852		1.61		597,847		1.63
Total borrowings	$	2,795,894	1.03	%	$	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 June 30, 2017 balances include advances payable of $350.9 million and purchase accounting premiums of $0.5 million. The December 31, 2016 balance includes advances payable of $437.8 million and purchase accounting premiums of $0.7 million.

(3) The June 30, 2017 balance includes advances payable of $9.0 million and purchase accounting premiums of $55 thousand. The December 31, 2016 balance includes advance payable of $19.0 million and purchase accounting premiums of $0.1 million.

(4) The June 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 June 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:

	June 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	$	—	$	—	$	4,000	$	5,000	$	9,000
Total borrowings	$	—	$	—	$	4,000	$	5,000	$	9,000
Amounts related to securities sold under agreements to repurchase not included in offsetting disclosure in Note 10									$	9,000