Deposits

Deposit account balances are summarized as follows (dollars in thousands):



	As of December 31,
	2016				2015
	Amount		Weighted Average Rate		Amount		Weighted Average Rate
Transaction:
Negotiable orders of withdrawal	$	467,440	0.34	%	$	217,813	0.25	%
Non-interest bearing checking	390,484		—	%	263,073		—	%
Total transaction	857,924		0.19	%	480,886		0.11	%
Savings:
Money market	818,660		0.67	%	548,132		0.62	%
Savings	500,926		0.24	%	524,043		0.47	%
Total savings	1,319,586		0.51	%	1,072,175		0.55	%
Certificates of deposit:
Under $250,000	484,480		1.22	%	461,127		1.11	%
$250,000 or more	51,597		1.48	%	38,741		1.73	%
Total certificates of deposit	536,077		1.24	%	499,868		1.15	%
Total deposits	$	2,713,587	0.55	%	$	2,052,929	0.59	%

The Company had brokered deposits (included in certificates of deposit in the above table) of $98.8 million and $157.1 million at December 31, 2016 and 2015, respectively.

Scheduled maturities of certificates of deposit are summarized as follows (in thousands):



	December 31, 2016
2017	$	237,733
2018	109,599
2019	94,622
2020	78,344
2021	15,779
Thereafter	—
Total	$	536,077

Interest expense on deposits is summarized as follows (in thousands):



	December 31,
	2016		2015		2014
Negotiable order of withdrawal and money market	$	5,634	$	2,816	$	1,766
Savings-passbook and statement	2,124		2,141		445
Certificates of deposit	6,529		5,466		3,180
	$	14,287	$	10,423	$	5,391