Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments and Receipts for Leases

The following table summarizes future minimum rental payments and receipts under lease agreements, including the greater Boston locations acquired through Citigroup Inc.:

	At December 31, 2015
(In thousands)	Rental Payments		Rental Receipts
2016	$	25,218	$	690
2017	23,140		422
2018	18,998		248
2019	17,227		147
2020	15,561		89
Thereafter	84,114		84
Total future minimum rental payments and receipts	$	184,258	$	1,680

Outstanding Financial Instruments Contract Amounts Represent Credit Risk

The following table summarizes the outstanding amounts of credit-related financial instruments with off-balance sheet risk:

	At December 31,
(In thousands)	2015		2014
Commitments to extend credit	$	4,851,994	$	4,376,733
Standby letter of credit	133,294		142,964
Commercial letter of credit	45,742		27,787
Total credit-related financial instruments with off-balance sheet risk	$	5,031,030	$	4,547,484

Reserve For Unfunded Credit Commitments

The following table provides a summary of activity in the reserve for unfunded credit commitments:

	Years ended December 31,
(In thousands)	2015			2014		2013
Beginning balance	$	5,151		$	4,384	$	5,662
(Benefit) provision	(3,032		)	767		(1,278		)
Ending balance	$	2,119		$	5,151	$	4,384