Consolidated balance sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Preferred stock, shares authorized	5,000,000
Preferred stock, shares issued	0
Preferred stock, shares outstanding	0
Predecessor
Preferred stock, shares authorized		600,000
Preferred stock, shares issued		0
Preferred stock, shares outstanding		0
Common Class A
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized	180,000,000
Common stock, shares issued	38,907,573
Common stock, shares outstanding	38,907,573
Common Class A | Predecessor
Common stock, par value (in dollars per share)		$ 0.01
Common stock, shares authorized		10,000,000
Common stock, shares issued		333,686
Common stock, shares outstanding		333,686
Common Class B
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized	20,000,000
Common stock, shares issued	7,871,512
Common stock, shares outstanding	7,871,512
Common Class B | Predecessor
Common stock, par value (in dollars per share)		$ 0.01
Common stock, shares authorized		10,000,000
Common stock, shares issued		344,859
Common stock, shares outstanding		344,859
Common Class C | Predecessor
Common stock, par value (in dollars per share)		$ 0.01
Common stock, shares authorized		10,000,000
Common stock, shares issued		209,882
Common stock, shares outstanding		209,882
Common Class E | Predecessor
Common stock, par value (in dollars per share)		$ 0.01
Common stock, shares authorized		10,000,000
Common stock, shares issued		504,276
Common stock, shares outstanding		504,276
Common Class F | Predecessor
Common stock, par value (in dollars per share)		$ 0.01
Common stock, shares authorized		1
Common stock, shares issued		1
Common stock, shares outstanding		1
Common Class G | Predecessor
Common stock, par value (in dollars per share)		$ 0.01
Common stock, shares authorized		3
Common stock, shares issued		2
Common stock, shares outstanding		2