Stock-Based Compensation (Details 4) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of restricted stock, non-vested balance beginning (in shares)		0	108,334
Shares granted (in shares)			32,500
Shares vested (in shares)			(140,834)
Shares forfeited (in shares)			0
Number of restricted stock, non-vested balance ending (in shares)			0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Exercise price, non-vested balance beginning (in dollars per share)		$ 0.00	$ 2.86
Shares granted - exercise price (in dollars per share)			10.67
Shares vested - exercise price (in dollars per share)			4.66
Exercise price, non-vested balance beginning (in dollars per share)			$ 0.00
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of restricted stock, non-vested balance beginning (in shares)	179,900	182,750
Shares granted (in shares)	93,468	58,068
Shares vested (in shares)	(80,274)	(60,918)
Shares forfeited (in shares)	(4,465)	0
Number of restricted stock, non-vested balance ending (in shares)	188,629	179,900	182,750
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Exercise price, non-vested balance beginning (in dollars per share)	$ 9.35	$ 10.23
Shares granted - exercise price (in dollars per share)	7.26	7.50
Shares vested - exercise price (in dollars per share)	9.57	10.13
Shares forfeited - exercise price (in dollars per share)	7.09	0.00
Exercise price, non-vested balance beginning (in dollars per share)	$ 9.35	$ 9.35	$ 10.23