Revision of Prior Period Financial Statements - Condensed Consolidated Statements of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	$ 52,755	$ 77,767	$ 123,200	$ 153,255
Net loss	$ (13,244)	$ (121,169)	$ (35,952)	$ (243,569)
Basic and diluted net loss per share (in dollars per share)	$ (0.39)	$ (3.58)	$ (1.05)	$ (7.14)
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		$ 78,109		$ 153,913
Net loss		$ (120,827)		$ (242,911)
Basic and diluted net loss per share (in dollars per share)		$ (3.57)		$ (7.12)
Revision of Prior Period, Error Correction, Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		$ (342)		$ (658)
Net loss		$ (342)		$ (658)
Basic and diluted net loss per share (in dollars per share)		$ (0.01)		$ (0.02)
Product Revenue
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues	$ 52,729	$ 77,634	$ 123,142	$ 153,047
Product Revenue | Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		77,976		153,705
Product Revenue | Revision of Prior Period, Error Correction, Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenues		$ (342)		$ (658)