Business Combination (Details 2) - USD ($) $ in Thousands			9 Months Ended
	Apr. 16, 2015	Jan. 02, 2015	Sep. 30, 2015
Intangible assets acquired:
Intangible assets acquired			$ 4,800
Less: fair value of liabilities assumed:
Goodwill			$ 1,115
Developed Technology [Member]
Fair value of assets acquired:
Useful Life (in years)			7 years
Intangible assets acquired:
Intangible assets acquired			$ 4,100
Customer relationships
Fair value of assets acquired:
Useful Life (in years)			2 years
Intangible assets acquired:
Intangible assets acquired			$ 700
Tunable Laser Product Lines From EMCORE Corporation [Member]
Total purchase consideration:
Cash paid		$ 1,500
Notes payable	$ 15,500	16,000
Total consideration	$ 17,000	$ 17,500
NeoPhotonics Semiconductor [Member]
Total purchase consideration:
Cash paid			1,500
Total consideration			16,982
Fair value of assets acquired:
Accounts receivable			9,274
Inventories			1,693
Prepaid expenses and other current assets			670
Property, plant and equipment			6,917
Intangible assets acquired:
Intangible assets acquired			23,354
Less: fair value of liabilities assumed:
Accounts payable			(7,427)
Accrued liabilities			(60)
Fair value of liabilities assumed total			(7,487)
Goodwill			1,115
NeoPhotonics Semiconductor [Member] | Notes Payable
Total purchase consideration:
Notes payable			15,482
NeoPhotonics Semiconductor [Member] | Developed Technology [Member]
Intangible assets acquired:
Intangible assets acquired			4,100
NeoPhotonics Semiconductor [Member] | Customer relationships
Intangible assets acquired:
Intangible assets acquired			$ 700