Equity Plan - Restricted Stock Activity (Details) - Restricted stock	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Number of Shares
Nonvested shares at the beginning of the period (in shares) | shares	199,503
Granted (in shares) | shares	82,770
Vested (in shares) | shares	(64,954)
Forfeited or expired (in shares) | shares	(18,634)
Nonvested shares at the end of the period (in shares) | shares	198,685
Weighted Average Grant Date Fair Value
Nonvested shares at the beginning of the period (in dollars per share) | $ / shares	$ 9.74
Granted (in dollars per share) | $ / shares	14.36
Vested (in dollars per share) | $ / shares	10.02
Forfeited or expired (in dollars per share) | $ / shares	11.87
Nonvested shares at the end of the period (in dollars per share) | $ / shares	$ 11.38