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Stockholders' Equity - Stock Options (Details) $ / shares in Units, $ in Millions																				12 Months Ended
	Dec. 21, 2020 employee $ / shares shares	Sep. 28, 2020 $ / shares shares	Aug. 21, 2020 $ / shares shares	Apr. 15, 2020 $ / shares shares	Apr. 01, 2020 $ / shares shares	Mar. 31, 2020 $ / shares shares	Mar. 13, 2020 $ / shares shares	Feb. 28, 2020 $ / shares shares	Jan. 31, 2020 $ / shares shares	Jan. 01, 2020 $ / shares shares	Dec. 31, 2019 $ / shares shares	Oct. 31, 2019 $ / shares	Oct. 01, 2019 $ / shares	Sep. 01, 2019 $ / shares	May 01, 2019	Apr. 15, 2019 $ / shares	Apr. 01, 2019 $ / shares	Feb. 27, 2019 $ / shares shares	Jan. 01, 2019 $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares
Number of Options
Outstanding, beginning balance (in shares)										7,222,625										7,222,625
Granted (in shares)																				531,250
Expired/Forfeited (in shares)																				(574,500)
Outstanding, ending balance (in shares)											7,222,625									7,179,375	7,222,625
Exercisable (in shares)																				3,063,208
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share) | $ / shares										$ 3.33										$ 3.33
Granted (in dollars per share) | $ / shares																				1.40
Expired/Forfeited (in dollars per share) | $ / shares																				3.94
Outstanding, ending balance (in dollars per share) | $ / shares											$ 3.33									3.14	$ 3.33
Exercisable (in dollars per share) | $ / shares																				$ 4.91
Other disclosures
Outstanding Weighted Average Remaining Contractual Life (in Years)											5 years 9 months 26 days									4 years 11 months 5 days
Exercisable Weighted Average Remaining Contractual Life (in Years)																				1 year 2 months 19 days
Vested (in shares)																				444,083
Number of employees to whom awards granted | employee	2
Compensation expense | $																				$ 0.2	$ 0.5
Unrecognized compensation expense | $																				$ 0.2
Weighted average period of recognition																				1 year 22 days
Board Observer
Number of Options
Granted (in shares)										5,000
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares										$ 4.00
Other disclosures
Percentage of options vested per tranche										50.00%
Consultant
Number of Options
Granted (in shares)			22,750	13,500					75,000
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares			$ 1.00	$ 3.00					$ 1.57
Other disclosures
Percentage of options vested per tranche				33.33%
Employee
Number of Options
Granted (in shares)	50,000	15,000				50,000		50,000
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares	$ 1.09	$ 0.71				$ 0.61		$ 1.40
Other disclosures
Percentage of options vested per tranche	50.00%	33.33%				33.33%
A certain key employee
Number of Options
Granted (in shares)							50,000												250,000
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares							$ 5.50												$ 3.00
Other disclosures
Vested (in shares)																				100,000
Non Management Directors
Number of Options
Granted (in shares)					200,000
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares					$ 0.50												$ 1.70
Other disclosures
Percentage of options vested per tranche					50.00%												50.00%
Key Employees
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares												$ 1.72	$ 1.77	$ 1.59		$ 1.40	$ 1.38
Other disclosures
Percentage of options vested per tranche												33.33%	33.33%	33.33%	50.00%	50.00%
Chief Executive Officer
Number of Options
Granted (in shares)																		2,578,947
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares																		$ 1.70
Chief Financial Officer
Number of Options
Granted (in shares)																		552,632
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares																		$ 1.70
Officer
Number of Options
Granted (in shares)																		368,421
Weighted Average Exercise Price
Granted (in dollars per share) | $ / shares																		$ 1.70
Five year expiration
Stockholders' Equity
Expiration period																				5 years
Seven year expiration
Stockholders' Equity
Expiration period																				7 years
Ten year expiration
Stockholders' Equity
Expiration period																				10 years

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