Schedule of Share-based Compensation, Shares Authorized Under Stock Option Plans, by Exercise Price Range (Details)	3 Months Ended
	Mar. 31, 2022 $ / shares shares
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options outstanding, number of shares | shares	3,867
Options exercisable, number of shares | shares	3,867
Exercise Price Range 1 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$ 2.00
Exercise price range, upper range limit	$ 4.00
Options outstanding, number of shares | shares	2,334
Options outstanding, weighted average remaining life (years)	1 year 11 months 12 days
Options outstanding, weighted average exercise price	$ 2.20
Options exercisable, number of shares | shares	2,334
Options exercisable, weighted average exercise price	$ 2.71
Exercise Price Range 2 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price range, lower range limit	4.20
Exercise price range, upper range limit	$ 6.68
Options outstanding, number of shares | shares	1,533
Options outstanding, weighted average remaining life (years)	1 year 5 months 8 days
Options outstanding, weighted average exercise price	$ 6.68
Options exercisable, number of shares | shares	1,533
Options exercisable, weighted average exercise price	$ 6.68