Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Patents	Mar. 31, 2013 Patents Minimum	Mar. 31, 2013 Patents Maximum	Mar. 31, 2013 Customer Lists	Mar. 31, 2013 Customer Lists Minimum	Mar. 31, 2013 Customer Lists Maximum	Mar. 31, 2013 Trademarks	Mar. 31, 2013 MCubed Technologies Incorporated	Nov. 01, 2012 MCubed Technologies Incorporated	Mar. 31, 2013 LightWorks Optics Incorporated	Dec. 21, 2012 LightWorks Optics Incorporated	Mar. 31, 2013 Oclaro Incorporated Thin Film Filter Business
Goodwill And Other Intangible Assets [Line Items]
Business acquisition, identifiable intangible assets												$ 49,000,000	$ 23,400,000	$ 49,000,000	$ 16,600,000	$ 49,000,000
Finite lived intangible assets acquired					26,600,000			17,600,000			4,600,000
Amortization expense recorded on intangible assets	2,200,000	1,300,000	4,600,000	3,300,000
Amortization period of patents and customer lists, in months					132 months	60 months	240 months	133 months	120 months	192 months
Carrying amount of trade names acquired								$ 16,100,000