CONDENSED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Services revenues	$ 9,069,000	$ 7,353,000	$ 23,963,000	$ 17,169,000
Products revenues	386,000	370,000	1,156,000	1,170,000
Total Net Sales	9,455,000	7,723,000	25,119,000	18,339,000
Cost of services	5,569,000	4,700,000	14,937,000	12,624,000
Cost of goods sold	323,000	280,000	868,000	845,000
Total Cost of Sales	5,892,000	4,980,000	15,805,000	13,469,000
Gross Profit	3,563,000	2,743,000	9,314,000	4,870,000
Operating Expenses:
Selling	908,000	879,000	2,530,000	2,598,000
Marketing	703,000	409,000	1,873,000	1,262,000
General and administrative	1,106,000	1,004,000	3,580,000	2,871,000
Total Operating Expenses	2,717,000	2,292,000	7,983,000	6,731,000
Operating Income (Loss)	846,000	451,000	1,331,000	(1,861,000)
Other income	15,000	2,000	27,000	7,000
Income (Loss) Before Taxes	861,000	453,000	1,358,000	(1,854,000)
Income tax expense (benefit)	216,000	2,000	365,000	(580,000)
Net Income (Loss)	$ 645,000	$ 451,000	$ 993,000	$ (1,274,000)
Net income (loss) per share:
Basic	$ 0.05	$ 0.04	$ 0.08	$ (0.10)
Diluted	$ 0.05	$ 0.04	$ 0.08	$ (0.10)
Shares used in calculation of net income (loss) per share:
Basic	11,729,000	11,758,000	11,784,000	11,698,000
Diluted	12,012,000	11,777,000	12,026,000	11,698,000