Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue	$ 76,814	$ 66,152	$ 207,867	$ 183,400
Cost of goods sold	58,635	45,536	162,330	136,190
Gross profit	18,179	20,616	45,537	47,210
Operating expenses:
Research and development	12,227	9,893	33,021	29,753
Sales and marketing	3,580	3,354	10,515	9,783
General and administrative	8,905	6,530	21,853	19,704
Adjustment to fair value of contingent consideration	1,026	(850)	1,026	(246)
Amortization of purchased intangible assets	381	321	1,128	996
Restructuring charges	450		775
Acquisition-related transaction costs	126	240	5,317	912
Total operating expenses	26,695	19,488	73,635	60,902
Income (loss) from operations	(8,516)	1,128	(28,098)	(13,692)
Interest income	66	147	269	424
Interest expense	(251)	(135)	(756)	(434)
Other income (expense), net	115	154	(432)	(121)
Total interest and other income (expense), net	(70)	166	(919)	(131)
Income (loss) before income taxes	(8,586)	1,294	(29,017)	(13,823)
Provision for income taxes	(777)	(571)	(870)	(888)
Income (loss) from continuing operations	(9,363)	723	(29,887)	(14,711)
Income from discontinued operations, net of tax (including gain on disposal of $636, net of tax, for the nine months ended September 30, 2012)				170
Net income (loss)	$ (9,363)	$ 723	$ (29,887)	$ (14,541)
Basic and diluted net income (loss) per share attributable to NeoPhotonics Corporation common stockholders:
Continuing operations	$ (0.30)	$ 0.02	$ (0.97)	$ (0.53)
Discontinued operations				$ 0.01
Net income (loss)	$ (0.30)	$ 0.02	$ (0.97)	$ (0.52)
Weighted average shares used to compute net income (loss) per share attributable to NeoPhotonics Corporation common stockholders:
Basic	31,184,958	30,215,144	30,848,478	27,838,292
Diluted	31,184,958	30,611,304	30,848,478	27,838,292