Equity - Warrants (Details) - USD ($) $ / shares in Units, $ in Millions				1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Apr. 22, 2020	Apr. 20, 2020	Jul. 17, 2019	May 31, 2016	Jun. 30, 2020	Jun. 30, 2021	Dec. 31, 2020
Warrant
Number of Underlying Shares
Outstanding, beginning balance (in shares)						17,403,846	14,653,846
Outstanding, end balance (in shares)						14,303,846	17,403,846
Weighted Average Exercise Price Per Share
Outstanding, beginning balance (in dollars per share)						$ 0.38	$ 0.39
Outstanding, end balance (in dollars per share)						$ 0.39	$ 0.38
May 2016 Warrants
Number of Underlying Shares
Exchanged during period (in shares)							4,500,000
Series B Warrants
Number of Underlying Shares
Exchanged during period (in shares)							4,500,000
Weighted Average Exercise Price Per Share
Exchanged during the period (in dollar per share)							$ 0.35
Warrants exercise period			6 months
July 2019 Series A warrants
Number of Underlying Shares
Exercised (in shares)						(200,000)
Weighted Average Exercise Price Per Share
Exercised during period (in dollar per share)						$ 0.35
July 2019 Series B warrants
Number of Underlying Shares
Exercised (in shares)						(1,500,000)
Weighted Average Exercise Price Per Share
Exercised during period (in dollar per share)						$ 0.35
April 2020 Series A warrants
Number of Underlying Shares
Granted (in shares)							7,500,000
Exercised (in shares)						(1,400,000)	(5,000,000)
Weighted Average Exercise Price Per Share
Granted (in dollars per share)							$ 0.30
Exercised during period (in dollar per share)						$ 0.30	$ 0.30
April 2020 Series B warrants
Number of Underlying Shares
Granted (in shares)							3,750,000
Exercised (in shares)							(3,500,000)
Weighted Average Exercise Price Per Share
Granted (in dollars per share)							$ 0.30
Exercised during period (in dollar per share)							$ 0.30
Private Placement | Series A Warrants
Number of Underlying Shares
Exercised (in shares)						6,400,000	6,400,000
Outstanding, end balance (in shares)						1,100,000
Private Placement | Series B Warrants
Number of Underlying Shares
Exercised (in shares)						3,500,000	3,500,000
Outstanding, end balance (in shares)						250,000
Registered Offering
Weighted Average Exercise Price Per Share
Stock Issued During period Shares New Issues				8,000,000.0
Sale price (in dollars per shares)				$ 0.50
Gross proceeds from common stock sale				$ 4.0
Registered Offering | May 2016 Warrants
Number of Underlying Shares
Outstanding, end balance (in shares)						1,500,000
Registered Offering | Series A Warrants
Number of Underlying Shares
Exercised (in shares)						200,000
Outstanding, end balance (in shares)						8,453,846
Weighted Average Exercise Price Per Share
Warrants exercise period			6 months
Registered Offering | Series B Warrants
Number of Underlying Shares
Exercised (in shares)						1,500,000
Outstanding, end balance (in shares)						3,000,000
Registered Offering | 2016 Warrants
Number of Underlying Shares
Outstanding, end balance (in shares)				6,000,000
Weighted Average Exercise Price Per Share
Number of shares of common stock per capital unit (in shares)				0.75
Number of common shares which can be purchased with each warrant				1
Warrants exercise period				5 years
LPC Program [Member]
Weighted Average Exercise Price Per Share
Stock Issued During period Shares New Issues						900,000
Sale price (in dollars per shares)						$ 0.27
Common Stock | Private Placement
Weighted Average Exercise Price Per Share
Stock Issued During period Shares New Issues		15,000,000			15,000,000
Common shares issuable upon exercise		11,250,000
Common Stock | Private Placement | Series A Warrants
Weighted Average Exercise Price Per Share
Common shares issuable upon exercise		7,500,000
Common Stock | Private Placement | Series B Warrants
Weighted Average Exercise Price Per Share
Outstanding, end balance (in dollars per share)	$ 0.26
Common shares issuable upon exercise		3,750,000
Common Stock | Registered Offering
Weighted Average Exercise Price Per Share
Stock Issued During period Shares New Issues			8,653,846