CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive (Loss) Income	Accumulated Deficit	Total
Balance at beginning of year at Dec. 31, 2019	$ 7,000	$ 57,940,000	$ (93,000)	$ (49,283,000)	$ 8,571,000
Balance at beginning of year (in shares) at Dec. 31, 2019	6,563
Net income				60,000	60,000
Foreign currency translation adjustment			49,000		49,000
Stock-based compensation		26,000			26,000
Stock-based compensation (in shares)	38
Balance at end of year at Sep. 30, 2020	$ 7,000	57,966,000	(44,000)	(49,223,000)	8,706,000
Balance at end of year (in shares) at Sep. 30, 2020	6,601
Balance at beginning of year at Jun. 30, 2020	$ 7,000	57,966,000	(108,000)	(49,288,000)	8,577,000
Balance at beginning of year (in shares) at Jun. 30, 2020	6,601
Net income				65,000	65,000
Foreign currency translation adjustment			64,000		64,000
Balance at end of year at Sep. 30, 2020	$ 7,000	57,966,000	(44,000)	(49,223,000)	8,706,000
Balance at end of year (in shares) at Sep. 30, 2020	6,601
Balance at beginning of year at Dec. 31, 2020	$ 7,000	57,966,000	37,000	(49,170,000)	$ 8,840,000
Balance at beginning of year (in shares) at Dec. 31, 2020	6,601				6,601,000
Net income				243,000	$ 243,000
Foreign currency translation adjustment			21,000		21,000
Stock-based compensation	$ 1	20,000			20,000
Balance at end of year at Sep. 30, 2021	$ 7,000	57,986,000	58,000	(48,927,000)	$ 9,124,000
Balance at end of year (in shares) at Sep. 30, 2021	6,602				6,602,000
Balance at beginning of year at Jun. 30, 2021	$ 7,000	57,971,000	60,000	(49,150,000)	$ 8,888,000
Balance at beginning of year (in shares) at Jun. 30, 2021	6,601
Net income				223,000	223,000
Foreign currency translation adjustment			(2,000)		(2,000)
Stock-based compensation	$ 1	15,000			15,000
Balance at end of year at Sep. 30, 2021	$ 7,000	$ 57,986,000	$ 58,000	$ (48,927,000)	$ 9,124,000
Balance at end of year (in shares) at Sep. 30, 2021	6,602				6,602,000