Stock-Based Compensation - Assumptions and Activity (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Assumptions used to determine fair value of stock options granted
Granted (in shares)	7,250
Shares
Outstanding at beginning of period (in shares)	4,918
Granted (in shares)	7,250
Outstanding at end of period (in shares)	12,168
Exercisable at end of period (in shares)	2,833
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per shares)	$ 15.78
Granted (in dollars per share)	15.25
Outstanding at end of period (in dollars per share)	15.47
Exercisable at end of period (in dollars per share)	$ 13.53
Aggregate intrinsic value of all options outstanding	$ 14,000
Aggregate intrinsic value of all options exercisable	$ 9,000
Stock Options
Assumptions used to determine fair value of stock options granted
Granted (in shares)	7,250	1,250
Shares
Granted (in shares)	7,250	1,250
Exercised (in shares)	0	(5,916)