Deposits (Tables)

12 Months Ended

Dec. 31, 2015

Banking and Thrift [Abstract]

Summary of deposits

The following table summarizes deposits at the dates indicated.

	At December 31,
				2015							2014
(Dollars in Thousands)	Weighted Average Rate			Balance		Percent of Total		Weighted Average Rate			Balance		Percent of Total
Core deposits:
NOW		0.06	%	$	1,415,430	15.54	%		0.06	%	$	1,331,345	14.01	%
Non-interest bearing NOW and demand deposit		—		998,393		10.96			—		867,432		9.13
Money market		0.26		2,560,204		28.12			0.24		2,373,484		24.96
Savings		0.05		2,137,818		23.48			0.05		2,237,142		23.54
Total core deposits		0.12		7,111,845		78.10			0.11		6,809,403		71.64
Certificates of deposit		1.16		1,994,182		21.90			1.47		2,695,506		28.36
Total deposits		0.35	%	$	9,106,027	100.00	%		0.50	%	$	9,504,909	100.00	%

Scheduled maturities of certificates of deposit

The following table details the scheduled maturities of our certificates of deposit at December 31, 2015.

Year	Weighted Average Rate				Balance		Percent of Total
				(In Thousands)
2016		1.06	%		$	926,241	46.45	%
2017		0.94			392,744		19.69
2018		1.08			185,089		9.28
2019		1.46			183,596		9.21
2020		1.60			305,363		15.31
2021 and thereafter		1.70			1,149		0.06
Total		1.16	%		$	1,994,182	100.00	%

Summary of interest expense on deposits

The following table summarizes interest expense on deposits for the years indicated.

	For the Year Ended December 31,
(In Thousands)	2015		2014		2013
Interest-bearing NOW	$	778	$	706	$	691
Money market	6,496		5,527		5,646
Savings	1,093		1,182		1,329
Certificates of deposit	28,976		43,940		54,951
Total interest expense on deposits	$	37,343	$	51,355	$	62,617