Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Goodwill And Other Intangible Assets [Line Items]
Amortization expense recorded on intangible assets	$ 1.1	$ 1.0
Patents [Member]
Goodwill And Other Intangible Assets [Line Items]
Amortization period of patents and customer lists, in months	121 months
Patents [Member] | Minimum [Member]
Goodwill And Other Intangible Assets [Line Items]
Amortization period of patents and customer lists, in months	120 months
Patents [Member] | Maximum [Member]
Goodwill And Other Intangible Assets [Line Items]
Amortization period of patents and customer lists, in months	240 months
Customer Lists [Member]
Goodwill And Other Intangible Assets [Line Items]
Carrying amount of trade names acquired	$ 11.4
Customer Lists [Member] | Minimum [Member]
Goodwill And Other Intangible Assets [Line Items]
Amortization period of patents and customer lists, in months	120 months
Customer Lists [Member] | Maximum [Member]
Goodwill And Other Intangible Assets [Line Items]
Amortization period of patents and customer lists, in months	97 months