Equity - Narrative (Details)		3 Months Ended		6 Months Ended
	Jul. 02, 2020 USD ($) day director $ / shares	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($)	Dec. 31, 2020 $ / shares
Dividends Payable [Line Items]
Series B convertible preferred stock par value (in dollars per share) | $ / shares		$ 0.001		$ 0.001		$ 0.001
Deemed dividends		$ (464,000)		$ (926,000)
Series B Preferred convertible Stock, dividends accrued but not recorded for the period		1,033,000	$ 0	2,039,000	$ 0
Total unrecognized compensation expense		33,000,000.0		$ 33,000,000.0
Outstanding Options, weighted average remaining contractual term (in years)				2 years 4 months 28 days
Preferred Class B Convertible Stock
Dividends Payable [Line Items]
Issuance of Series B Preferred Stock	$ 100,000,000
Series B convertible preferred stock par value (in dollars per share) | $ / shares	$ 0.001
Proceeds from issuance of temporary equity	$ 100,000,000
Series B preferred stock, conversion price (in dollars per share) | $ / shares	$ 3.85
Conversion ratio of Series B preferred stock to common stock	259.74
Series B preferred stock, minimum percentage of conversion stock price to trigger conversion (percent)	200.00%
Number of trading days within consecutive day trading period common stock must exceed trigger conversion price | day	20
Series B preferred stock, threshold number of consecutive trading days | day	30
Series B preferred stock, minimum percentage of conversion stock price on conversion date (percent)	200.00%
Number of board seats elected by Series B preferred stockholders | director	2
Series B preferred stock, maximum voting stock percentage on an as-converted basis (percent)	19.90%
Series B preferred stock, increasing-rate dividend feature	$ 1,800,000
Preferred Class B Convertible Stock | Discounted Dividend Rate prior to Quarterly Dividend Payment ending on June 30,2021
Dividends Payable [Line Items]
Series B convertible stock, cumulative dividend (percent)	4.00%
Preferred Class B Convertible Stock | Perpetual Dividend Rate after Quarterly Dividend Payment ending on June 30, 2021
Dividends Payable [Line Items]
Series B convertible stock, cumulative dividend (percent)	6.00%
Series B Convertible Preferred Stock
Dividends Payable [Line Items]
Deemed dividends		$ (464,000)		$ (926,000)
Series B Preferred convertible Stock, dividends accrued but not recorded for the period				$ 4,100,000
Series B Preferred convertible stock, shares issuable upon conversion (in shares) | shares		27,027,252		27,027,252