Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		5 Months Ended	8 Months Ended	9 Months Ended
	Jan. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income (loss)	$ 16,879	$ 1,041	$ (22,510)			$ (30,727)	$ (59,372)
Net (income) loss attributable to non-controlling interests		(21)	0		$ 0	532	0
Net income (loss) attributable to common shareholders		1,020	(22,510)		(42,493)	(30,195)	$ (59,372)
Less: net income available to participating securities		(196)	(235)		(344)	(627)
Net income (loss) available to common shareholders — basic		824	(22,745)		(42,837)	(30,822)
Net income (loss) available to common shareholders — diluted		$ 824	$ (22,745)		$ (42,837)	$ (30,822)
Denominator:
Weighted average common shares outstanding — basic (in shares)		520,620,519	311,559,780		311,674,226	520,267,029
Weighted average common shares outstanding — diluted (in shares)		521,761,076	311,559,780		311,674,226	520,267,029
Net income (loss) per common share — basic (in dollars per share)		$ 0.00	$ (0.07)		$ (0.14)	$ (0.06)
Net income (loss) per common share — diluted (in dollars per share)		$ 0.00	$ (0.07)		$ (0.14)	$ (0.06)
Time-Vesting Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)		140,301		951,217	623,375	1,170,889