Deposit Accounts

12 Months Ended

Dec. 31, 2018

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



	2018		Weighted Average Interest Rate		2017		Weighted Average Interest Rate
	(dollars in thousands)
Transaction accounts
Noninterest-bearing checking	$	3,495,737	—	%	$	2,226,876	—	%
Interest-bearing checking	526,088		0.38	%	365,193		0.13	%
Money market	2,975,578		0.89	%	2,181,571		0.48	%
Savings	250,271		0.14	%	227,436		0.13	%
Total transaction accounts	7,247,674		0.37	%	5,001,076		0.21	%
Certificates of deposit accounts
250,000 or less	569,877		1.44	%	562,147		0.96	%
Greater than $250,000	840,800		2.12	%	522,663		1.26	%
Total certificates of deposit accounts	1,410,677		1.84	%	1,084,810		1.10	%
Total deposits	$	8,658,351	0.63	%	$	6,085,886	0.33	%

The aggregate annual maturities of certificates of deposit accounts at December 31, 2018 are as follows:



	2018
	Balance		Weighted Average Interest Rate
	(dollars in thousands)
Within 3 months	$	479,572	1.88	%
4 to 6 months	365,578		2.03	%
7 to 12 months	264,838		1.68	%
13 to 24 months	179,590		1.92	%
25 to 36 months	43,103		2.01	%
37 to 60 months	13,380		1.74	%
Over 60 months	64,616		0.92	%
Total	$	1,410,677	1.84	%

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



	2018		2017		2016
	(dollars in thousands)
Checking accounts	$	1,167	$	365	$	200
Money market accounts	19,567		6,720		3,641
Savings	357		251		151
Certificates of deposit accounts	16,562		6,035		4,399
Total	$	37,653	$	13,371	$	8,391

Accrued interest on deposits, which is included in accrued expenses and other liabilities, was $1,742,000 at December 31, 2018 and $526,000 at December 31, 2017.