Deposits

12 Months Ended

Dec. 31, 2017

Banking and Thrift [Abstract]

Deposits

Note 10 — Deposits

The following table provides information regarding the Bank’s deposit composition at December 31, 2017, 2016, and 2015 as well as the average rate being paid on interest bearing deposits at December 31, 2017, 2016, and 2015.

	2017				2016				2015
			Average				Average				Average
(dollars in thousands)	Balance		Rate		Balance		Rate		Balance		Rate
Noninterest bearing demand	$	1,982,912	—		$	1,775,684	—		$	1,405,067	—
Interest bearing transaction	420,417		0.46	%	289,122		0.16	%	178,797		0.16	%
Savings and money market	2,621,146		0.70	%	2,902,560		0.54	%	2,835,325		0.34	%
Time, $100,000 or more	515,682		1.20	%	464,842		0.95	%	406,570		0.77	%
Other time	313,827		1.17	%	283,906		0.86	%	332,685		0.74	%
Total	$	5,853,984			$	5,716,114			$	5,158,444

The remaining maturity of time deposits at December 31, 2017, 2016 and 2015 are as follows:

(dollars in thousands)	2017		2016		2015
Three months or less	$	180,459	$	120,238	$	88,483
More than three months through six months	228,513		151,422		123,789
More than six months through twelve months	208,554		207,141		234,684
Over twelve months	211,983		269,947		292,299
Total	$	829,509	$	748,748	$	739,255

Interest expense on deposits for the years ended December 31, 2017, 2016 and 2015 is as follows:

(dollars in thousands)	2017		2016		2015
Interest bearing transaction	$	1,537	$	646	$	291
Savings and money market	17,284		12,038		8,185
Time, $100,000 or more	7,294		6,487		5,019
Other time	1,171		77		848
Total	$	27,286	$	19,248	$	14,343

Related Party Deposits totaled $84.3 million and $57.5 million at December 31, 2017 and 2016, respectively.

As of December 31, 2017 and December 31, 2016, time deposit accounts in excess of $250 thousand totaled $279.7 million and $241.3 million, respectively.