Note 17 - Revisions of Previously Issued Unaudited Consolidated Financial Statements (Unaudited) - Comprehensive Income (Details) - USD ($)	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Net Income	$ 503,000	$ 693,000	$ 1,522,000	$ 766,000	$ 1,671,000	$ 3,719,000	$ 2,215,000	$ 5,390,000	$ 2,718,000	$ 6,156,000	$ 3,282,000	$ 6,756,000
Other comprehensive loss- foreign currency translation loss	(137,000)	(265,000)	(152,000)	(187,000)	79,000	(108,000)	(417,000)	(29,000)	(554,000)	(216,000)	(620,000)	(96,000)
Total comprehensive income (loss)	366,000	428,000	1,370,000	579,000	1,750,000	3,611,000	1,798,000	5,361,000	2,164,000	5,940,000	$ 2,662,000	6,660,000
Previously Reported [Member]
Net Income	503,000	693,000	1,522,000	766,000	1,671,000	3,719,000	2,215,000	5,390,000	2,718,000	6,156,000		6,756,000
Other comprehensive loss- foreign currency translation loss	0	0	0	0	0	0	0	0	0	0		0
Total comprehensive income (loss)	503,000	693,000	1,522,000	766,000	1,671,000	3,719,000	2,215,000	5,390,000	2,718,000	6,156,000		6,756,000
Revision of Prior Period, Adjustment [Member]
Net Income	0	0	0	0	0	0	0	0	0	0		0
Other comprehensive loss- foreign currency translation loss	(137,000)	(265,000)	(152,000)	(187,000)	79,000	(108,000)	(417,000)	(29,000)	(554,000)	(216,000)		(96,000)
Total comprehensive income (loss)	$ (137,000)	$ (265,000)	$ (152,000)	$ (187,000)	$ 79,000	$ (108,000)	$ (417,000)	$ (29,000)	$ (554,000)	$ (216,000)		$ (96,000)