Equity Based Compensation - Restricted Stock (Details) - Restricted stock awards $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares shares
Awards
Outstanding, beginning of period (in shares) | shares	256,597
Vested (in shares) | shares	0
Granted (in shares) | shares	324,010
Canceled (in shares) | shares	(6,679)
Outstanding, end of period (in shares) | shares	573,928
Weighted Average Grant-Date Fair Value
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 20.03
Vested (in dollars per share) | $ / shares	0.00
Granted (in dollars per share) | $ / shares	18.77
Canceled (in dollar per share) | $ / shares	18.81
Outstanding, end of period (in dollars per share) | $ / shares	$ 19.33
Unrecognized compensation costs | $	$ 8.8
Unrecognized compensation costs, period for recognition	2 years 4 months 24 days