Stock Compensation (Details 3) - $ / shares		5 Months Ended	12 Months Ended
	Jul. 31, 2015	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Number of Shares
Forfeited or expired (in shares)		0	(522,500)
Weighted-Average Exercise Price
Forfeited or expired (in dollars per share)		$ 0.00	$ 12.00
Stock options
Number of Shares
Outstanding, beginning balance (in shares)		0	1,106,875
Granted (in shares)		1,106,875	167,598
Outstanding, ending balance (in shares)	0	1,106,875	751,973	1,106,875
Vested and expected to vest, ending balance (in shares)		1,106,875	751,973	1,106,875
Weighted-Average Exercise Price
Outstanding, beginning balance (in dollars per share)		$ 0.00	$ 12.00
Granted (in dollars per share)		12.00	5.37
Outstanding, ending balance (in dollars per share)	$ 0.00	12.00	10.52	$ 12.00
Exercisable, ending balance (in dollars per share)		0.00	0.00	0.00
Vested and expected to vest, ending balance (in dollars per share)		$ 12.00	$ 10.52	$ 12.00
Weighted-Average Remaining Contractual Term
Outstanding	9 years 6 months 29 days		8 years 10 months 28 days	9 years 6 months 29 days
Granted			9 years 9 months 4 days
Exercisable			0 years
Vested and expected to vest			8 years 10 months 28 days	9 years 6 months 29 days
Stock appreciation rights (SAR)
Number of Awards
Outstanding, beginning balance (in shares)		0	165,000
Granted (in shares)		165,000	0
Forfeited or expired (in shares)		0	(6,875)
Outstanding, ending balance (in shares)	0	165,000	158,125	165,000
Vested and expected to vest, ending balance (in shares)		165,000	158,125	165,000
Weighted-Average Exercise Price
Outstanding, beginning balance (in dollars per share)		$ 0.00	$ 12.00
Granted (in dollars per share)		12.00	0.00
Forfeited or expired (in dollars per share)		0.00	12.00
Outstanding, ending balance (in dollars per share)	$ 0.00	12.00	12.00	$ 12.00
Vested and expected to vest, ending balance (in dollars per share)		$ 12.00	$ 12.00	$ 12.00
Weighted-Average Remaining Contractual Term (years)
Granted		9 years 8 months 16 days
Outstanding		9 years 8 months 16 days	8 years 8 months 16 days
Vested and expected to vest		9 years 8 months 16 days	8 years 8 months 16 days