Stock-Based Compensation (Details 2)	6 Months Ended
	Jun. 30, 2017 $ / shares shares
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
RSU [Roll Forward]
Outstanding and unvested, beginning of period (shares) | shares	207,016
Granted (shares) | shares	48,194
Vested (shares) | shares	(7,468)
Forfeited (shares) | shares	(4,509)
Outstanding and unvested, end of period (shares) | shares	243,233
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding and unvested, beginning of period, Weighted average grant date fair value (usd per share) | $ / shares	$ 29.85
Granted, Weighted average grant date fair value (usd per share) | $ / shares	24.13
Vested, Weighted average grant date fair value (usd per share) | $ / shares	22.89
Forfeited, Weighted average grant date fair value (usd per share) | $ / shares	24.74
Outstanding and unvested, end of period, Weighted average grant date fair value (usd per share) | $ / shares	$ 29.03
Performance Shares
PSU [Roll Forward]
Outstanding and unvested, beginning of period (shares) | shares	124,394
Granted (shares) | shares	104,590
Vested (shares) | shares	0
Forfeited (shares) | shares	0
Outstanding and unvested, ending of period (shares) | shares	228,984
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding and unvested, beginning of period, Weighted average grant date fair value (usd per share) | $ / shares	$ 31.08
Granted, Weighted average grant date fair value (usd per share) | $ / shares	23.65
Vested, Weighted average grant date fair value (usd per share) | $ / shares	0.00
Forfeited, Weighted average grant date fair value (usd per share) | $ / shares	0.00
Outstanding and unvested, ending of period, Weighted average grant date fair value (usd per share) | $ / shares	$ 27.69