OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Product warranty and deferred revenue (Details) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Deferred costs	$ 1,900,000	$ 3,900,000
Deferred software revenue	200,000	400,000
Extended Product Warranty Disclosure [Abstract]
Deferred revenue, ending balance	199,000	487,000
Warranty Reserves [Member]
Extended Product Warranty Disclosure [Abstract]
Liability, beginning balance	1,286,000	1,398,000
Settlements made during the period	(530,000)	(872,000)
Change in liability for warranties issued during the period	394,000	658,000
Change in liability for preexisting warranties	(360,000)	102,000
Liability, ending balance	790,000	1,286,000
Deferred revenue [Member]
Extended Product Warranty Disclosure [Abstract]
Deferred revenue, beginning balance	11,739,000	12,776,000
Settlements made during the period	(13,411,000)	(14,807,000)
Change in liability for warranties issued during the period	12,026,000	13,770,000
Change in liability for preexisting warranties	0	0
Deferred revenue, ending balance	$ 10,354,000	$ 11,739,000