Acquisitions - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Sep. 12, 2013 Oclaro's Fiber Amplifier and Micro Optics Business	Nov. 30, 2013 Oclaro's Fiber Amplifier and Micro Optics Business	Jun. 30, 2014 Oclaro's Fiber Amplifier and Micro Optics Business	Sep. 30, 2013 Oclaro Incorporated	Jun. 30, 2014 Oclaro Incorporated	Jun. 30, 2014 Acquisitions of Two Oclaro
Business Acquisition [Line Items]
Net cash paid at acquisition date	$ 177,676,000	$ 126,193,000	$ 46,141,000	$ 5,000,000	$ 79,600,000		$ 90,601,000
Purchase of business - holdback amount recorded in other liabilities					4,000,000		6,000,000	2,000,000
Goodwill	196,145,000	123,352,000	80,748,000		35,586,000		37,507,000
Business acquisition, revenue of acquired entity						53,400,000		61,800,000
Business acquisition, earnings of acquired entity						2,600,000		17,400,000
Business acquisition, cash acquired							1,700,000
Payment of additional amount for working capital adjustment							2,475,000
Business acquisition, transaction costs								3,700,000	3,700,000
Business acquisition, transaction costs, tax amount								$ 200,000