Intangibles Assets, Net and Goodwill - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Amortization of intangible assets	$ 5,900,000		$ 6,800,000	$ 21,600,000	$ 18,800,000
Patents		4,900,000
Cost of revenue		2,400,000
Goodwill impairment charge		$ 92,400,000		$ 92,350,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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