Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2014 Trade Names	Jun. 30, 2014 Minimum	Jun. 30, 2014 Maximum	Jun. 30, 2014 Patents	Jun. 30, 2014 Patents Minimum	Jun. 30, 2014 Patents Maximum	Jun. 30, 2014 Customer Lists	Jun. 30, 2014 Customer Lists Minimum	Jun. 30, 2014 Customer Lists Maximum	Sep. 30, 2013 Oclaro Incorporated	Jun. 30, 2014 Oclaro Incorporated Customer Lists	Jun. 30, 2014 Oclaro Incorporated Technology and Patents
Goodwill And Other Intangible Assets [Line Items]
Goodwill adjustment	$ (516,000)
Goodwill	196,145,000	123,352,000	80,748,000										37,507,000
Percentage of fair value greater than carrying value	9.00%
Amortization expense recorded on intangible assets	11,300,000	6,700,000	4,500,000
Amortization period of patents and customer lists, in months					7 years	18 years	118 months	60 months	240 months	150 months	120 months	192 months
Identifiable intangibles assets recorded in connection with acquisitions													28,900,000	50,100,000	10,800,000
Carrying amount of trade names acquired				$ 16,400,000