Debt (Details) - USD ($)			1 Months Ended	12 Months Ended
	Oct. 23, 2019	Oct. 22, 2019	Feb. 28, 2018	Dec. 31, 2019	Dec. 31, 2018
Debt
Conversion price	$ 0.40
Amount was recorded as a credit to additional paid in capital				$ 49,130,000	$ 2,266,000
Loss on note extinguishment				(1,114,000)
Debt beneficial conversion feature				$ 104,000	401,000
Convertible notes
Debt
Proceeds from debt issued			$ 500,000
Shares issued on debt conversion			1,565,300
Conversion price	$ 0.40
Fair value of notes	$ 11,200,000
Face value of notes	9,800,000
Amount was recorded as a credit to additional paid in capital	10,600,000
Loss on note extinguishment	1,100,000
Convertible interest rate (as a percentage)				5.00%
Interest on principal				$ 25,000	23,000
Debt beneficial conversion feature	104,000	$ 401,000
Amortization of debt discount				$ 104,000	$ 18,000
Debt discount	$ 300,000