Debt - 2019 Exchange Notes (Details)	1 Months Ended	3 Months Ended
	May 31, 2019 USD ($) item	Mar. 31, 2020 USD ($)	Jul. 31, 2019 USD ($) shares	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Loss on extinguishment of debt				$ (1,942,000)
Exchange Notes
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Number of Napo convertible notes | item	2
Number of Napo convertible notes exchanged for CVP note | item	2
Convertible debt payable		6,678,461			$ 6,678,461
2019 Exchange Note 1
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Principal amount	$ 10,125,000
Principal amount and accrued interest	10,536,000
Accrued interest on notes payable	$ 411,000
Interest rate (as a percent)	10.00%
Common stock issued in exchange of debt | shares			1,119,440
Convertible debt payable		4,381,000			4,381,000
Repayments of notes payable, principal			$ 6,154,000
Repayments of notes payable, interest			$ 90,000
Share issued for principal and interest payment | shares			1,119,440
2019 Exchange Note 2
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Principal amount	$ 2,297,000
Interest rate (as a percent)	10.00%
Convertible debt payable		$ 2,297,000			$ 2,297,000