Acquisition (Narrative) (Details) (USD $)	12 Months Ended						12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 01, 2010	Sep. 13, 2010 Aha [Member]	Jun. 30, 2011 3dB [Member]	Feb. 10, 2011 3dB [Member]	Jun. 30, 2010 Distribution Channels [Member]	Jun. 30, 2010 Non-compete Agreements [Member]	Jun. 30, 2010 Trade Names [Member]
Acquisition price			$ 76,721,000	$ 1,800,000		$ 3,000,000
Purchase price allocation, working capital						500,000
Cash paid to acquire entity			65,100,000			2,300,000
Percentage of cash paid on purchase price						60.00%
Cash paid for acquisition excluding working capital adjustment						1,800,000
Remainder of the purchase price payable in installments		10,000,000				1,200,000
Remaining portion of purchase price paid, after adjustment for foreign currency translation	11,200,000
Number of installments payable, in years						3
Contingent purchase price adjustment		1,600,000
Goodwill	(3,902,000)		56,661,000
Decrease in goodwill	2,300,000
Business acquisition, purchase price allocation							4,000,000	1,300,000	8,900,000
Amortization period, months									70
Amortization period, minimum, months	10						15	20
Amortization period, maximum, months	17						35	60
Acquisition costs incurred		$ 1,500,000		$ 100,000	$ 100,000