Current Debt - Convertible Debt (Details)		1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 27, 2019 USD ($) item $ / shares shares	Dec. 31, 2014 USD ($) D instrument $ / shares shares	Mar. 31, 2020 USD ($) security $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2019 $ / shares	Dec. 09, 2019 shares	Jun. 30, 2015 $ / shares
Convertible Debt
Common stock, par value (in dollars per share) | $ / shares			$ 0.001		$ 0.001		$ 0.001
Warrants issued | shares			98,013,256
Maximum
Convertible Debt
Warrant exercise price | $ / shares			$ 5.00
Minimum
Convertible Debt
Warrant exercise price | $ / shares			0.35
Warrants
Convertible Debt
Additional paid in capital recorded		$ 800,000
Reduction to additional paid in capital		100,000
Warrants exercisable for each common stock | shares	8,556,456					80,000,000
Warrant exercise price | $ / shares	$ 0.35		$ 0.50		$ 0.50
Exchange Warrants
Convertible Debt
Fair value of notes	$ 300,000
10% Senior Promissory Notes due December 26, 2019
Convertible Debt
Gains (Losses) on Extinguishment of Debt	100,000
12% Senior Promissory Notes due December 26, 2022
Convertible Debt
Convertible notes issued	6,890,000
Outstanding amount	7,250,000
Fair value of notes	6,800,000
Deferred finance costs	200,000
Reduction to additional paid in capital	$ 8,000
Debt instrument interest rate (as a percent)	12.00%
U.S. Treasury securities Floor (as a percent)	0.25%
Threshold amount of proceeds from financing for redeeming exchange notes	$ 6,300,000
Percentage of proceeds from the sale of assets held for repay debt	50.00%
Debt instrument repurchase price percentage	101.00%
Number of units issued | item	1
Percentage of outstanding notes in exchange offer	95.00%
Denomination for conversion of notes	$ 1
Number of warrants settled | item	1
Warrants exercisable for each common stock | shares	1
Warrant exercise price | $ / shares	$ 0.35
Warrant exercise term	3 years
Warrants issued | shares	7,200,000
Payment of principal and interest	$ 368,000
Percentage of principal paid on outstanding amount	5.00%
New 13% Senior Promissory Notes due December 2022
Convertible Debt
Number of units issued | shares	13,355
Additional paid in capital recorded	$ 47,000
Discounts and offering expenses	40,000
Deferred finance costs	38,000
Reduction to additional paid in capital	$ 2,000
Debt instrument interest rate (as a percent)	13.00%
U.S. Treasury securities Floor (as a percent)	0.25%
Debt instrument repurchase price percentage	101.00%
Denomination for conversion of notes	$ 100
Warrants exercisable for each common stock | shares	1
Warrant exercise price | $ / shares	$ 0.35
Warrant exercise term	3 years
Percentage of increase in investment of notes	20.00%
Value of new notes	$ 1,340,000
New 13% Senior Promissory Notes due December 2022 | Maximum
Convertible Debt
Convertible notes issued	$ 15,000,000
Convertible Notes
Convertible Debt
Convertible notes issued			$ 7,200,000
Net proceeds from the sale of the Notes		8,000,000
Discounts and offering expenses		500,000
Deferred finance costs		$ 400,000
Debt instrument interest rate (as a percent)		10.00%
Percentage of convertible amount on outstanding amount		95
U.S. Treasury securities Floor (as a percent)		0.25%
Percentage of proceeds from the sale of assets held for repay debt		50.00%
Amount held for repay debt		$ 250,000
Percentage of convertible debt average VWAP		80.00%
Number of business days considered for calculating average VWAP | D		30
Conversion of shares (in shares) | shares				2,625,000
Percentage of convertible shares on outstanding shares		9.30%
Debt instrument repurchase price percentage		100.00%
Aggregate principal amount				$ 2,600,000
Remaining amount of notes available for conversion				5,900,000
Annual reduction in interest payments				$ 200,000
Number of embedded derivatives | security			1
Convertible notes		$ 7,700,000
Convertible Notes | Maximum
Convertible Debt
Conversion ratio (in shares)		100
Conversion of shares (in shares) | shares		8,535,000
Convertible share price (in dollars per share) | $ / shares				$ 0.5485
Convertible Notes | Minimum
Convertible Debt
Convertible share price (in dollars per share) | $ / shares		$ 0.32		$ 0.3462
Convertible Notes | Warrants
Convertible Debt
Number of units issued | shares		85,350
Number of units issued to related parties | shares		23,750
Convertible notes issued		$ 8,500,000
Number of instruments used as a basis for the fair value of a transaction | instrument		2
Warrant exercise price | $ / shares			$ 5.00
Non-convertible Promissory Note
Convertible Debt
Debt instrument interest rate (as a percent)				10.00%
Senior Promissory Notes issued				$ 1,300,000