Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2013 Oclaro Incorporated	Sep. 30, 2013 Oclaro Incorporated
Business Acquisition [Line Items]
Business acquisition, total consideration in cash net of cash acquired	$ 90,601,000		$ 90,601,000
Business acquisition, cash acquired			1,700,000
Business acquisition, post closing adjustments subject to hold-back for fifteen months			6,000,000	6,000,000
Business acquisition, post closing working capital adjustments			2,000,000	2,000,000
Business acquisition, goodwill	162,051,000	123,352,000	39,041,000	39,041,000
Business acquisition, revenue of acquired entity				4,800,000
Business acquisition, earnings of acquired entity				500,000
Business acquisition, transaction costs			3,500,000	3,500,000
Business acquisition, transaction costs, net of tax			$ 3,300,000	$ 3,300,000