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Unaudited Quarterly Financial Data (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Product sales	$ 2,213,818	$ 1,968,122	$ 2,375,662	$ 2,986,359	$ 2,694,407	$ 2,472,428	$ 1,960,363	$ 3,101,491	$ 9,543,961	$ 10,228,689
Gross margin	1,218,647	1,204,627	1,239,861	1,757,560	1,657,502	1,611,902	1,130,574	1,850,925	5,420,695	6,250,902
Product development expenses	253,737	307,721	380,434	302,443	331,139	301,746	271,759	330,665	1,244,335	1,235,309
Net operating income	119,309	50,467	21,465	698,964	461,437	626,850	213,983	820,052	890,204	2,122,322
Net income (loss)	$ 30,285	$ 34,870	$ (9,155)	$ 452,448	$ 288,807	$ 351,292	$ 94,058	$ 479,082	$ 508,448	$ 1,213,239
Net income (loss) per common share:
Basic	$ 0.01	$ 0.01	$ (0.00)	$ 0.12	$ 0.09	$ 0.12	$ 0.03	$ 0.16	$ 0.12	$ 0.40
Diluted	$ 0.01	$ 0.01	$ (0.00)	$ 0.11	$ 0.09	$ 0.11	$ 0.03	$ 0.15	$ 0.12	$ 0.38

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