SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2008
Inventories [Abstract]
Raw materials				$ 2,066,123	$ 2,248,371
Work in process				495,502	370,340
Finished goods				821,648	959,314
Inventories				$ 3,383,273	3,578,025
Summary of weighted average shares used for computation of basic and diluted earnings per share [Abstract]
Basic (in shares)	9,631,686	9,624,691
Diluted (in shares)	9,631,686	9,624,691
Summary of common share equivalent basis, used in diluted per share computations [Abstract]
1999 and 2008 Plan Stock Options (in shares)	0	0
Options and warrants excluded from calculation of diluted per common share equivalent because the effect would have been anti-dilutive (in shares)	655,672	671,868
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average estimated grant-date fair value of stock options granted (in dollars per share)	$ 5.64	$ 0
Assumptions made in calculating fair values of options [Abstract]
Expected term	0 years	0 years
Expected volatility (in hundredths)		0.00%
Expected dividend yield (in hundredths)	0.00%	0.00%
Risk-free interest rate (in hundredths)		0.00%
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated share-based compensation expense	$ 53,600	$ 109,300
Revenues from External Customers [Line Items]
Number of product groups				1
Net product sales	$ 5,917,019	$ 5,614,685
Summary of accounts payable and accrued liabilities [Abstract]
Accounts payable - suppliers				$ 1,162,164	1,260,520
Accrued commissions				320,753	129,192
Accrued royalties / license fees				269,309	732,301
Accrued payroll				197,682	146,962
Accrued vacation				270,569	244,810
Accrued bonuses				0	177,700
Accrued expenses - other				195,645	109,947
TOTAL				$ 2,416,122	$ 2,801,432
Minimum [Member]
Assumptions made in calculating fair values of options [Abstract]
Expected volatility (in hundredths)	0.00%
Risk-free interest rate (in hundredths)	0.00%
Maximum [Member]
Assumptions made in calculating fair values of options [Abstract]
Expected volatility (in hundredths)	0.00%	0.00%
Risk-free interest rate (in hundredths)	0.00%	0.00%
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options outstanding under the plan (in shares)	649,478			663,664	649,478
Number of stock options exercised under the plan (in shares)	(45,814)
Assumptions made in calculating fair values of options [Abstract]
Expected term	5 years	0 years
Expected volatility (in hundredths)	48.66%	0.00%
Expected dividend yield (in hundredths)	0.00%	0.00%
Risk-free interest rate (in hundredths)	0.90%	0.00%
Stock options, number of shares [Roll forward]
Outstanding, beginning of period (in shares)	649,478
Granted (in shares)	60,000
Exercised (in shares)	45,814
Forfeited/expired/cancelled (in shares)	0
Outstanding, end of period (in shares)	663,664
Exercisable, end of period (in shares)	373,414
Stock options, outstanding, weighted average exercise price per share [Roll Forward]
Outstanding, beginning of period (in dollars per share)	$ 3.75
Granted (in dollars per share)	5.64
Exercised (in dollars per share)	2.82
Forfeited/expired/cancelled (in dollars per share)	0.00
Outstanding, end of period (in dollars per share)	3.98
Exercisable, end of period (in dollars per share)	$ 4.00
Stock options, additional disclosure [Abstract]
Outstanding, weighted average remaining contractual term	3 years 3 months 22 days		3 years 2 months 16 days
Exercisable, weighted average remaining contractual term	2 years 4 months 13 days
Outstanding, aggregate intrinsic value, beginning of period	$ 1,032,362
Outstanding, aggregate intrinsic value, end of period	1,331,294
Exercisable, aggregate intrinsic value, end of period	$ 743,691
Net unrecognized compensation cost				$ 387,433
Weighted average period for recognition of net unrecognized compensation cost (in years)	2 years 3 months 25 days
Total fair value of stock options vested during period	$ 174,371	$ 357,484
Cost of Goods Sold [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated share-based compensation expense	0	0
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated share-based compensation expense	7,500	18,200
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated share-based compensation expense	$ 46,100	91,100
2008 Stock Incentive Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the plan (in shares)				750,000		625,000
Number of stock options outstanding under the plan (in shares)	327,046			327,046
Increase in number of shares authorized (in shares)	125,000
Number of stock options exercised under the plan (in shares)	472,478
Options or shares still available to be issued (in shares)				46,560
Stock options, number of shares [Roll forward]
Exercised (in shares)	(472,478)
Outstanding, end of period (in shares)	327,046
2014 Stock Incentive Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the plan (in shares)				800,000
Number of stock options outstanding under the plan (in shares)	129,750			129,750
Maximum period of stock option issuance after adoption of SOP	10 years
Increase in number of shares authorized (in shares)	0
Number of stock options exercised under the plan (in shares)	0
Options or shares still available to be issued (in shares)				670,250
Stock options, number of shares [Roll forward]
Exercised (in shares)	0
Outstanding, end of period (in shares)	129,750
Africa [Member]
Revenues from External Customers [Line Items]
Net product sales	$ 713,989	1,576,054
Asia [Member]
Revenues from External Customers [Line Items]
Net product sales	64,005	50,813
Europe [Member]
Revenues from External Customers [Line Items]
Net product sales	123,096	65,146
North America [Member]
Revenues from External Customers [Line Items]
Net product sales	2,389,024	1,319,002
South America [Member]
Revenues from External Customers [Line Items]
Net product sales	$ 2,626,905	$ 2,603,670