Note 15. Equity Transactions (Detail) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Outstanding	2,915,338	3,016,338	3,509,338
Weighted Average Exercise Price (in Dollars per share)	$ 5.54	$ 5.42	$ 4.77
Weighted Average Remaining Contractual Life (years)	2 years 73 days
Exercisable	2,915,338	2,788,755
Weighted Average Exercise Price (in Dollars per share)	$ 5.54	$ 5.85
0.14 - 0.15 [Member]
Outstanding	648,750
Weighted Average Exercise Price (in Dollars per share)	$ 0.14
Weighted Average Remaining Contractual Life (years)	6 years 109 days
Exercisable	648,750
Weighted Average Exercise Price (in Dollars per share)	$ 0.14
0.33 - 0.33 [Member]
Outstanding	55,000
Weighted Average Exercise Price (in Dollars per share)	$ 0.33
Weighted Average Remaining Contractual Life (years)	109 days
Exercisable	55,000
Weighted Average Exercise Price (in Dollars per share)	$ 0.33
0.75 - 0.75 [Member]
Outstanding	3,000
Weighted Average Exercise Price (in Dollars per share)	$ 0.75
Weighted Average Remaining Contractual Life (years)	219 days
Exercisable	3,000
Weighted Average Exercise Price (in Dollars per share)	$ 0.75
2.96 - 2.96 [Member]
Outstanding	50,000
Weighted Average Exercise Price (in Dollars per share)	$ 2.96
Weighted Average Remaining Contractual Life (years)	5 years 292 days
Exercisable	50,000
Weighted Average Exercise Price (in Dollars per share)	$ 2.96
3.05 - 3.05 [Member]
Outstanding	188,600
Weighted Average Exercise Price (in Dollars per share)	$ 3.05
Weighted Average Remaining Contractual Life (years)	5 years 146 days
Exercisable	188,600
Weighted Average Exercise Price (in Dollars per share)	$ 3.05
3.13 - 3.13 [Member]
Outstanding	50,000
Weighted Average Exercise Price (in Dollars per share)	$ 3.13
Weighted Average Remaining Contractual Life (years)	3 years 146 days
Exercisable	50,000
Weighted Average Exercise Price (in Dollars per share)	$ 3.13
3.36 - 3.36 [Member]
Outstanding	34,500
Weighted Average Exercise Price (in Dollars per share)	$ 3.36
Weighted Average Remaining Contractual Life (years)	3 years 146 days
Exercisable	34,500
Weighted Average Exercise Price (in Dollars per share)	$ 3.36
3.86 - 4.10 [Member]
Outstanding	72,000
Weighted Average Exercise Price (in Dollars per share)	$ 3.97
Weighted Average Remaining Contractual Life (years)	3 years 146 days
Exercisable	72,000
Weighted Average Exercise Price (in Dollars per share)	$ 3.97
5.29 -6.93 [Member]
Outstanding	931,170
Weighted Average Exercise Price (in Dollars per share)	$ 6.38
Weighted Average Remaining Contractual Life (years)	2 years 219 days
Exercisable	931,170
Weighted Average Exercise Price (in Dollars per share)	$ 6.38
7.48 - 7.90 [Member]
Outstanding	26,500
Weighted Average Exercise Price (in Dollars per share)	$ 7.88
Weighted Average Remaining Contractual Life (years)	2 years 328 days
Exercisable	26,500
Weighted Average Exercise Price (in Dollars per share)	$ 7.74
9.90 - 10.89 [Member]
Outstanding	845,818
Weighted Average Exercise Price (in Dollars per share)	$ 10.01
Weighted Average Remaining Contractual Life (years)	1 year 146 days
Exercisable	845,818
Weighted Average Exercise Price (in Dollars per share)	$ 10.01
14.90 - 14.90 [Member]
Outstanding	10,000
Weighted Average Exercise Price (in Dollars per share)	$ 14.90
Weighted Average Remaining Contractual Life (years)	1 year 292 days
Exercisable	10,000
Weighted Average Exercise Price (in Dollars per share)	$ 14.90