Share-based Compensation (Details - Option Activity) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Outstanding at the beginning of the period	1,215,900	388,900
Outstanding at the beginning of the period	$ 8	$ 10
Weighted Average Remaining Contractual Life, Forfeited/expired	7 years 10 months 13 days	9 years 14 days	7 years 6 months 7 days
Aggregate Intrinsic Value at the beginning	$ 82	$ 486
Granted (in shares)	0	969,000
Granted (in dollars per share)	$ 0	$ 7
Exercised (in shares)	0	(25,000)
Exercised (in dollars per share)	$ 0	$ 4
Forfeited (in shares)	0	(117,000)
Forfeited (in dollars per share)	$ 0	$ 11
Exercised (in shares)	0	25,000
Forfeited (in shares)	0	117,000
Outstanding at the end of the period	1,215,900	1,215,900	388,900
Outstanding at the end of the period	$ 7,000	$ 8	$ 10
Aggregate Intrinsic Value at the end	$ 1	$ 82	$ 486
Vested and exercisable at the end of the period (in shares)	440,150
Vested and exercisable at the end of the period (in dollars)	$ 6
Vested and exercisable at the end of the period	7 years 4 months 6 days
Vested and exercisable at year end	$ 1
Expected to vest at the end of the period (in shares)	775,750
Expected to vest at the end of the period (in dollars)	$ 7