SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Inventory [Abstract]
Total inventory	$ 1,632,000	$ 2,219,000
Finished goods	700,000	1,000,000
Raw materials	900,000	1,200,000
Intangible Assets [Abstract]
Intangible assets description	Intangible assets consist of (i) permit costs related to the Company’s treatment facility in Carthage, Texas, (ii) nine patents (two acquired in June 1998, one in November 2003, one in January 2012, two in April 2012, one in August 2012, one in September 2012 and one in December 2012), and (iii) defense costs related to certain existing patents.
Estimated life of patents	17 years
Amortization expense	18,000	30,000	31,000
Future amortization of intangible assets [Abstract]
2014	49,000
2015	49,000
2016	49,000
2017	48,000
2018	46,000
Thereafter	427,000
Total	668,000
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	514,000	786,000	871,000
Share-based compensation, excess tax benefits	0	85,000	979,000
Valuation assumptions [Abstract]
Weighted average risk-free interest rate	0.50%	0.30%	0.70%
Weighted average expected volatility	58.00%	66.00%	67.00%
Weighted average expected life (in years)	4 years 7 months 10 days	3 years 10 months 20 days	4 years 4 months 24 days
Dividend yield	0.00%	0.00%	0.00%
Advertising Costs [Abstract]
Advertising costs	495,000	578,000	510,000
Realization of Long-lived Assets [Abstract]
Impairment losses recognized	129,000	70,000
Employee Benefit Plans
Employers match percentage (in hundredths)	25.00%
Maximum annual percentage contribution per employee (in hundredths)	6.00%
Company contributions to the 401(k) plan	39,000	38,000	41,000
Prior Group health benefit plan, individual deductible	2,000
Group health benefit plan, family deductible	2,000
Group health benefit plan, third party insurance company coverage beginning amount, individual	2,000
Group health benefit plan, third party insurance company coverage beginning amount, family	14,999
Prior Group health benefit plan, individual deductible	1,500
Prior group health benefit plan, family deductible	3,500
Prior group health benefit plan, third party insurance company coverage beginning amount, individual	11,000
Prior group health benefit plan, third party insurance company coverage beginning amount, family	33,000
Self-insured liability, health insurance	28,000	18,000
Uncertain tax positions
Liability for uncertain tax positions	0	0
Tax adjustments	0
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Open tax years	Fiscal years ended June 30, 2010, 2011, 2012 and 2013
State of Texas [Member]
Income Tax Contingency [Line Items]
Open tax years	Fiscal years ended June 30, 2008, 2009, 2010, 2011, 2012 and 2013
State of Georgia [Member]
Income Tax Contingency [Line Items]
Open tax years	Fiscal years ended June 30, 2010, 2011, 2012 and 2013
Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	21,000	68,000	67,000
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 493,000	$ 718,000	$ 804,000