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Share-Based Compensation Plans (Details Narrative) - USD ($)	1 Months Ended			12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Dec. 31, 2019	Apr. 30, 2021	Apr. 30, 2020	Jan. 18, 2018	Dec. 31, 2015
Restricted stock options, granted during period				10,000	13,513
Performance-based Stock Options [Member]
Share-based compensation weighted average per share fair value				$ 2.09
Employee Stock Option [Member]
Number of shares granted during the period				248,876	411,666
Share-based compensation weighted average per share fair value				$ 2.63	$ 0.92
Share-based compensation intrinsic value of outstanding				$ 300,000
Share-based compensation options, exercisable intrinsic value				$ 300,000
Share-based compensation unvested shares of stock options				268,575
Share-based compensation weighted average remaining contractual term				9 years 7 months 6 days
Share-based compensation expense				$ 400,000	$ 300,000
Employee Stock Option [Member] | Performance-based Stock Options [Member] | Two Executives [Member]
Number of shares granted during the period		81,337		40,666
Stock options vesting period, description		The awards can vest over 2 years if there is positive total shareholder return (e.g. share price increase) as measured to the 5-day (January 11-15, 2021) and (January 10-14, 2022) share price Volume Weighted Average Price ("VWAP").
Employee Stock Option [Member] | Performance-based Stock Options [Member] | Employees and Executives [Member]
Number of shares granted during the period	344,723			343,456
Stock options vesting period, description	The awards vest over 2 years provided there is positive total shareholder return (e.g. share price increase) as measured to the closing share price on January 14, 2022 and January 14, 2023.
Employee Stock Option [Member] | Subject to Service- Based Vesting Requirements [Member] | Employee [Member]
Unrecognized compensation cost related to non-vested stock options				$ 0
Restricted stock options, granted during period			51,547
Non-vested Stock [Member]
Unrecognized compensation cost related to non-vested stock options				$ 500,000
Share-based compensation cost expected to recognize weighted-average term				1 year 4 months 24 days
Performance Stock Options [Member]
Share-based compensation intrinsic value of outstanding				$ 100,000
Share-based compensation options, exercisable intrinsic value				$ 100,000
Share-based compensation unvested shares of stock options				384,122
Share-based compensation weighted average remaining contractual term				9 years 9 months 18 days
Share-based compensation expense				$ 100,000	10,000
Unrecognized compensation cost related to non-vested stock options				$ 600,000
Share-based compensation cost expected to recognize weighted-average term				1 year 8 months 12 days
Restricted Stock [Member]
Share-based compensation expense				$ 49,000	15,000
Share-based compensation cost expected to recognize weighted-average term				8 months 12 days
Unrecognized compensation cost remaining related to unvested restricted stock				$ 21,000
Stock Option [Member] | Subject to Service- Based Vesting Requirements [Member] | Employee [Member]
Share-based compensation expense				$ 30,000	$ 20,000
2015 Omnibus Incentive Plan [Member]
Share-based compensation arrangement by share-based payment award, number of shares authorized							1,332,036
Stock based compensation shares, available for grant				197,166
2018 Inducement Plan [Member]
Stock based compensation shares, available for grant				11,487		25,000

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