Stock Based Compensation - Restricted Stock Activity (Details) - Restricted Stock	3 Months Ended
	Mar. 31, 2017 $ / shares shares
Shares
Nonvested at beginning of period (in shares) | shares	50,822
Granted (in shares) | shares	14,142
Vested (in shares) | shares	(17,126)
Forfeited (in shares) | shares	0
Nonvested at end of period (in shares) | shares	47,838
Weighted Average Grant Date Value
Nonvested at beginning of period (in dollars per share) | $ / shares	$ 23.21
Granted (in dollars per share) | $ / shares	34.70
Vested (in dollars per share) | $ / shares	24.21
Forfeited (in dollars per share) | $ / shares	0.00
Nonvested at end of period (in dollars per share) | $ / shares	$ 26.25