Debt - Notes Payable (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Notes payable
Notes payable - non-current, net	$ 12,421,000	$ 450,000
Notes payable
Notes payable
Principal amount	33,892,000	7,228,000
Less: debt discount	(17,682,000)
Notes payable, net of discount	16,210,000	7,228,000
Notes payable - non-current, net	12,421,000	450,000
Notes payable - current, net	3,789,000	6,778,000
2019 Exchange Note 1 | Notes payable
Notes payable
Principal amount		4,381,000
2019 Exchange Note 2 | Notes payable
Notes payable
Principal amount	1,525,000	2,297,000
Insurance Premium Financing
Notes payable
Notes payable, net of discount	95,000
Insurance Premium Financing | Notes payable
Notes payable
Principal amount	95,000
Tempesta Note Payable
Notes payable
Principal amount	450,000	550,000
Tempesta Note Payable | Notes payable
Notes payable
Principal amount	450,000	$ 550,000
Royalty Interest | Notes payable
Notes payable
Principal amount	30,000,000
Oasis Secured Borrowing | Notes payable
Notes payable
Principal amount	$ 1,822,000