Deposits (Tables)

12 Months Ended

Dec. 31, 2014

Banking and Thrift [Abstract]

Composition of Deposits and Interest Expenses

The following table presents the composition of deposits at December 31 and interest expense for the years ended December 31:

	2014				2013				2012
(dollars in thousands)	Balance		Interest Expense		Balance		Interest Expense		Balance		Interest Expense
Noninterest-bearing demand	$	1,083,919	$	—	$	992,779	$	—	$	960,980	$	—
Interest-bearing demand	335,099		19		312,790		75		316,760		146
Money market	376,612		572		281,403		446		361,233		528
Savings	1,027,095		1,607		994,805		1,735		965,571		2,356
Certificates of deposit	1,086,117		7,930		1,090,531		9,150		1,033,884		13,766
Total	$	3,908,842	$	10,128	$	3,672,308	$	11,406	$	3,638,428	$	16,796

Scheduled Maturities of Certificates of Deposit

The following table indicates the scheduled maturities of certificates of deposit at December 31, 2014:

(dollars in thousands)	Amount
2015	$	628,889
2016	143,728
2017	230,051
2018	45,139
2019	30,295
Thereafter	8,015
Total	$	1,086,117