Redeemable Preferred Stock - Additional Information (Details) - Series A Preferred Stock - USD ($)		3 Months Ended
	Aug. 31, 2017	Mar. 31, 2020	Dec. 31, 2019
Temporary Equity [Line Items]
Dividends payable		$ 0	$ 0
Cumulative preferred dividends		$ 78,900,000
Preferred dividends payable (in USD per share)		$ 254.61
Majority Shareholder
Temporary Equity [Line Items]
Stock issued during period (shares)	310,000
Purchase price per share (in USD per share)	$ 1,000
Proceeds from issuance of preferred shares	$ 310,000,000