Deposit Accounts (Tables)

12 Months Ended

Dec. 31, 2015

Deposits [Abstract]

Schedule of components of deposit accounts and weighted average interest rates

Deposit accounts and weighted average interest rates consisted of the following at December 31:

	2015		Weighted Average Interest Rate		2014		Weighted Average Interest Rate
	(dollars in thousands)
Transaction accounts
Noninterest-bearing checking	$	711,771	—	%	$	456,754	—	%
Interest-bearing checking	134,999		0.11	%	131,635		0.11	%
Money market	743,871		0.35	%	526,256		0.32	%
Savings	83,507		0.15	%	74,508		0.14	%
Total transaction accounts	1,674,148		0.17	%	1,189,153		0.16	%
Certificates of deposit accounts
Less than 100,000	126,704		0.79	%	123,862		0.91	%
$100,000 through $250,000	166,397		0.91	%	163,819		1.00	%
Greater than $250,000	227,874		0.72	%	153,992		0.76	%
Total certificates of deposit accounts	520,975		0.80	%	441,673		0.89	%
Total deposits	$	2,195,123	0.32	%	$	1,630,826	0.36	%

Schedule of aggregate annual maturities of certificates of deposit accounts

The aggregate annual maturities of certificates of deposit accounts at December 31, 2015 are as follows:

	2015
	Balance		Weighted Average Interest Rate
	(dollars in thousands)
Within 3 months	$	79,798	0.55	%
4 to 6 months	131,699		0.81	%
7 to 12 months	188,046		0.78	%
13 to 24 months	108,194		0.98	%
25 to 36 months	8,365		1.09	%
37 to 60 months	4,237		1.10	%
Over 60 months	636		0.97	%
Total	$	520,975	0.80	%

Schedule of interest expense on deposit accounts

Interest expense on deposit accounts for the years ended December 31 is summarized as follows:

	2015		2014		2013
	(dollars in thousands)
Checking accounts	$	165	$	161	$	110
Savings	141		110		103
Money market accounts	2,426		1,443		1,043
Certificates of deposit accounts	3,898		3,323		2,809
Total	$	6,630	$	5,037	$	4,065