Earnings Per Share - Narrative (Details) - shares shares in Millions	1 Months Ended	2 Months Ended	3 Months Ended
	Feb. 08, 2019	Mar. 31, 2019	Mar. 31, 2018
Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share		0.3
Predecessor | Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	1.5
Predecessor | Unvested Restricted Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share			2.0
Predecessor | Convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share			1.3