Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Federal statutory tax rate, amount	$ 864	$ 594
State tax rate, amount	139	117
Permanent difference - stock-based compensation, amount	(55)	29
Permanent difference - other, amount	(83)	16
Foreign tax credit generated, amount	(55)	(15)
Tax on foreign earnings - tax reform, amount	55	17
Foreign rate differential, amount	13	(2)
FDII deduction, amount	(57)	(32)
Total, amount	$ 821	$ 724
Federal statutory tax rate, percentage	21.00%	21.00%
State tax rate, percentage	3.40%	4.10%
Permanent difference - stock-based compensation, percentage	(1.30%)	1.10%
Permanent difference - other, percentage	(2.00%)	0.50%
Foreign tax credit generated, percentage	(1.30%)	(0.50%)
Tax on foreign earnings - tax reform, percentage	1.30%	0.60%
Foreign rate differential, percentage	0.30%	(0.10%)
FDII deduction, percentage	(1.30%)	(1.10%)
Total, percentage	20.10%	25.60%