Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Current tax provision:
Federal									$ 697	$ 580
State									183	144
Total current tax provision									880	724
Deferred tax benefit:
Federal									(24)	(236)
State									(6)	(68)
Total deferred tax (benefit) provision									(30)	(304)
Total tax provision	232	237	221	160	83	88	128	121	850	420
Difference between statutory federal income tax rate and effective tax rates
Statutory rate (as a percent)									34.00%	34.00%
Increase (decrease) resulting from:
State taxes, net of federal tax benefit (as a percent)									5.00%	4.30%
Bank-owned life insurance (as a percent)									(1.50%)	(3.00%)
Stock compensation plans (as a percent)									0.90%	1.50%
Interest income from municipal securities (as a percent)									(0.90%)	(1.00%)
Other, net (as a percent)									(1.00%)	0.50%
Effective tax rates (as a percent)									36.50%	36.30%
Deferred tax assets:
Total deferred tax assets	1,542								1,542	1,765
Deferred tax liabilities:
Total deferred tax liabilities	(907)								(907)	(863)
Net deferred tax asset	635							281	635	902
Federal Income Tax
Deferred tax assets:
Total deferred tax assets	1,195								1,195	1,374
Deferred tax liabilities:
Total deferred tax liabilities	(718)								(718)	(674)
State
Deferred tax assets:
Total deferred tax assets	347								347	391
Deferred tax liabilities:
Total deferred tax liabilities	$ (189)								$ (189)	$ (189)