Debt - 2019 Exchange Notes (Details)	1 Months Ended				12 Months Ended
	Jan. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Sep. 30, 2020 USD ($) $ / shares shares	May 31, 2019 USD ($) item	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Gains (Losses) on Extinguishment of Debt | $	$ 753,000				$ (753,000)	$ (1,864,000)
Outstanding | shares					0
Series D perpetual preferred stock
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Shares issued (in shares) | shares			842,500
Global amendment agreement
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Increase in principal debt (in percent)			5.00%
Increase in principal debt | $			$ 2,600,000
Incremental value of cash flows | $			$ 228,000
Global amendment agreement | Series D perpetual preferred stock
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Gains (Losses) on Extinguishment of Debt | $		$ 1,300,000
Shares issued (in shares) | shares			842,500
Preferred stock dividend rate (as a percent)			8.00%
Preferred stock dividend payable in arrears			24 months
Fair Value of Stock, Inception | $			$ 6,400,000
Preferred Stock Redemption Price | $ / shares			$ 8.00
Shares issued on conversion | shares		5,296,623
Shares converted | shares		859,348
Outstanding | shares		0			0	0
Global amendment agreement | Series D perpetual preferred stock | Minimum
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Effective interest rate			12.00%
Global amendment agreement | Series D perpetual preferred stock | Maximum
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Effective interest rate			15.00%
December 2020 Purchase Agreement
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Principal amount | $		$ 1,000,000.0				$ 1,000,000.0
Exchange Notes
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Number of Napo convertible notes | item				2
2019 Exchange Note 1
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Common stock issued in exchange of debt | shares		6,740,573
Convertible debt payable | $		$ 0				$ 0
Debt Conversion, Converted Instrument, Shares Issued | shares		6,740,573
Gains (Losses) on Extinguishment of Debt | $		$ 560,000
Share issued for principal and interest payment | shares		6,740,573
Exchange Note 2
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Principal amount | $	$ 1,800,000			$ 2,300,000
Interest rate (as a percent)		10.00%				10.00%
Common stock issued in exchange of debt | shares	471,202	416,666
Convertible debt payable | $		$ 1,400,000			$ 0	$ 1,400,000
Principal amount of exchange note | $		$ 5,000,000.0
Debt Conversion, Converted Instrument, Shares Issued | shares	471,202	416,666
Share issued for principal and interest payment | shares	471,202	416,666
Exchange Note 2 | Global amendment agreement | Series D perpetual preferred stock
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Convertible debt payable | $			$ 0