Acquisition Accounting and Tangible and Intangible Assets Acquired (Detail) In Thousands, unless otherwise specified	9 Months Ended	1 Months Ended
	Sep. 30, 2013 USD ($)	Mar. 29, 2013 NeoPhotonics Semiconductor USD ($)		Mar. 29, 2013 Developed Technology NeoPhotonics Semiconductor USD ($)	Mar. 29, 2013 Customer relationships NeoPhotonics Semiconductor USD ($)	Mar. 29, 2013 Notes Payable To be paid in three equal installments NeoPhotonics Semiconductor USD ($)	Mar. 29, 2013 Notes Payable To be paid in three equal installments NeoPhotonics Semiconductor JPY (¥)	Mar. 29, 2013 Other Liability NeoPhotonics Semiconductor USD ($)
Business Acquisition [Line Items]
Cash paid	$ 13,128	$ 13,128
Liabilities assumed						11,130	1,050,000	8,819
Fair value of assets acquired including goodwill		24,258
Pension and retirement obligations								6,471
Other compensation-related liabilities								1,083
Other current liabilities								1,265
Inventory		13,309
Other current assets		35
Land, property, plant and equipment		14,433	[1]
Intangible assets acquired				2,120	3,180
Fair Value of assets acquired		$ 33,077

[1] Includes land of $3.5 million, buildings of $3.9 million and machinery, equipment, furniture and fixtures of $7.0 million.