The Company (Details) $ / shares in Units, $ in Millions		1 Months Ended		3 Months Ended
	Jul. 27, 2015 employee $ / shares shares	Sep. 30, 2016 shares	Jul. 31, 2016 shares	Sep. 30, 2016 USD ($)	Dec. 31, 2016 subsidiary
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of wholly-owned subsidiaries | subsidiary					5
Shares, new issues (in shares)		14,300,000	17,250,000
Shares issued for services (in shares)	30,682
Shares issued for services, number of employees | employee	1,700
IPO and Over-Allotment [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Shares, new issues (in shares)	38,906,286
Shares issued, price per share (in dollars per share) | $ / shares	$ 20.00
Over-Allotment Option [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Shares, new issues (in shares)	5,074,732
Common stock
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Allocated share-based compensation expense | $				$ 0.6