Deposits - Summary of Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Carrying Amount
Non-interest-bearing checking	$ 323,956	$ 291,248
Interest-bearing checking	314,506	305,004
Total checking accounts	638,462	596,252
Money market accounts	482,028	455,594
Certificates of deposit	390,320	447,213
Regular savings	327,563	312,544
Advance payments by borrowers for taxes and insurance	2,351	2,568
Total deposits	$ 1,840,724	$ 1,814,171
Weighted Average Rate
Non-interest-bearing checking (as a percent)	0.00%	0.00%
Interest-bearing checking (as a percent)	0.06%	0.06%
Total checking accounts (as a percent)	0.03%	0.03%
Money market accounts (as a percent)	0.24%	0.20%
Certificate of deposit (as a percent)	0.62%	0.52%
Regular savings (as a percent)	0.10%	0.10%
Advance payments by borrowers for taxes and insurance (as a percent)	0.03%	0.07%
Total deposits (as a percent)	0.22%	0.21%