Consolidated Balance Sheets (Parenthetical)	Dec. 31, 2017 $ / shares shares
Shareholders/members equity/(deficit):
Common interests, par value (in dollars per share) | $ / shares	$ 0
Common interests, units authorized (in shares)	500,000,000
Common interests, units issued (in shares)	121,228,353
Common interests, units outstanding (in shares)	121,228,353
Series A Preferred Stock [Member]
Shareholders/members equity/(deficit):
Preferred interests, par value (in dollars per share) | $ / shares	$ 0
Preferred interests, units authorized (in shares)	100,000,000
Preferred interests, units issued (in shares)	16,886,750
Preferred interests, units outstanding (in shares)	16,886,750
Series A-1 Preferred Stock [Member]
Shareholders/members equity/(deficit):
Preferred interests, par value (in dollars per share) | $ / shares	$ 0
Preferred interests, units authorized (in shares)	100,000,000
Preferred interests, units issued (in shares)	21,526,850
Preferred interests, units outstanding (in shares)	21,526,850