Equity - Warranty Activity (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Warrant Or Right [Roll Forward]
Class of warrant or right, outstanding, beginning balance (in shares)	95,619	176,432
Issuance (in shares)	31,330,629	0
Exercises (in shares)	0	0
Expirations/ cancellations (in shares)	0	(80,813)
Class of warrant or right, outstanding, ending balance (in shares)	31,426,248	95,619
Exercise price (in dollars per share)	$ 1,120	$ 17,120	$ 17,320
Exercise price, expirations / cancellations (in dollars per share)		$ 17,550
Exercise price, issuance (in dollars per share)	$ 1,070.00
Warrant
Class of Warrant Or Right [Roll Forward]
Class of warrant or right, outstanding, beginning balance (in shares)	95,619	176,432
Issuance (in shares)	8,342,128	0
Exercises (in shares)	0	0
Expirations/ cancellations (in shares)	0	(80,813)
Class of warrant or right, outstanding, ending balance (in shares)	8,437,747	95,619
Warrant
Class of Warrant Or Right [Roll Forward]
Class of warrant or right, outstanding, beginning balance (in shares)	0	0
Issuance (in shares)	22,988,501	0
Exercises (in shares)	0	0
Expirations/ cancellations (in shares)	0	0
Class of warrant or right, outstanding, ending balance (in shares)	22,988,501	0