Neophotonics (NPTN) 10-Q/A 9 Apr 14 2013 Q2 Quarterly report (amended) Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2013	Jul. 31, 2013
Document Information [Line Items]	'	'
Document Type	'10-Q/A	'
Amendment Flag	'true	'
Amendment Description	'NeoPhotonics Corporation (the “Company”), is filing this Amendment No. 1 (“Amendment”) to its Quarterly Report on Form 10-Q to restate and amend the Company’s previously issued and unaudited interim financial statements and related financial information as of June 30, 2013 and for the three and six months ended June 30, 2013, which was originally filed with the Securities and Exchange Commission on August 8, 2013. As disclosed in the Company’s Current Report on Form 8-K filed with the SEC on November 14, 2013, the Company determined that its unaudited condensed consolidated financial statements for the six months ended June 30, 2013 contained an error related to its accounting for a real estate registration tax which was incorrectly reflected as a component of the property, plant and equipment acquired as part of the purchase of NeoPhotonics Semiconductor (formerly the Optical Component Unit of LAPIS Semiconductor). In addition, the Company has made other corrections related to the purchase of NeoPhotonics Semiconductor, classification of certain amounts and other corrections, all of which were discovered during the close of its September 30, 2013 accounting records. For further information regarding the restatement, see Note 2 of the Notes to the Condensed Consolidated Financial Statements. Because of the corrections described above, management re-evaluated the Company’s control environment and concluded that additional material weaknesses existed at June 30, 2013 as more fully described in Item 4 “Controls and Procedures” in this Amendment. Consistent with the information described above, the Company has revised the following items in this Amendment:Part I Item 1 – Condensed Consolidated Financial Statements Item 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations Item 4 – Controls and Procedures Part II Item 1A- Risk Factors Additionally, in this Amendment, the Company is including currently dated certifications from the Company’s Principal Executive Officer and Principal Financial Officer as required by Section 302 of the Sarbanes-Oxley Act of 2002 in Exhibits 31.1 and 31.2 and a currently dated certification from the Company’s Principal Executive Officer and Principal Financial Officer as required by Section 906 of the Sarbanes-Oxley Act of 2002 in Exhibit 32.1. Except to the extent described above and set forth herein, the items and other disclosures in the Form 10-Q initially filed on August 8, 2013 are unchanged and this Amendment does not reflect any events that have occurred after the initial Form 10-Q was filed. Accordingly, this Amendment should be read in conjunction with the Company’s initial Form 10-Q and the Company’s subsequent filings with the United States Securities and Exchange Commission. In light of the restatement, readers should not rely on the Company’s previously filed financial statements as of and for the three and six month periods ended June 30, 2013.	'
Document Period End Date	30-Jun-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q2	'
Trading Symbol	'NPTN	'
Entity Registrant Name	'NEOPHOTONICS CORP	'
Entity Central Index Key	'0001227025	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	31,255,741

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$37,558	$36,940
Short-term investments	36,874	64,301
Restricted cash	1,813	2,626
Accounts receivable, net of allowance for doubtful accounts	72,998	70,354
Inventories	58,227	43,793
Prepaid expenses and other current assets	8,863	7,630
Total current assets	216,333	225,644
Long-term investments	355	188
Property, plant and equipment, net	70,761	54,440
Other intangible assets, net	17,362	14,213
Other long-term assets	1,318	1,147
Total assets	306,129	295,632
Current liabilities:	'	'
Accounts payable	43,894	36,308
Notes payable	9,041	12,003
Current portion of long-term debt	8,785	5,000
Accrued and other current liabilities	20,530	19,959
Total current liabilities	82,250	73,270
Long-term debt, net of current portion	28,070	17,167
Deferred income tax liabilities	664	653
Other noncurrent liabilities	7,882	1,862
Total liabilities	118,866	92,952
Commitments and contingencies (Note 10)	'	'
Stockholders’ equity:	'	'
Preferred stock, $0.0025 par value At June 30, 2013 and December 31, 2012: 10,000,000 shares authorized, no shares issued or outstanding	'	'
Common stock, $0.0025 par value At June 30, 2013: 100,000,000 shares authorized, 30,971,280 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	77	76
Additional paid-in capital	443,157	438,858
Accumulated other comprehensive income	12,636	11,829
Accumulated deficit	-268,607	-248,083
Total stockholders’ equity	187,263	202,680
Total liabilities and stockholders’ equity	$306,129	$295,632

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	30,971,280	30,546,155
Common stock, shares outstanding	30,971,280	30,546,155

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue	$74,990	$63,025	$131,053	$117,248
Cost of goods sold	59,389	47,837	103,695	90,654
Gross profit	15,601	15,188	27,358	26,594
Operating expenses:	'	'	'	'
Research and development	11,087	9,322	20,794	19,860
Sales and marketing	3,349	3,406	6,935	6,429
General and administrative	7,889	6,409	13,273	13,140
Acquisition-related transaction costs	681	312	5,191	706
Amortization of purchased intangible assets	426	321	747	675
Adjustment to fair value of contingent consideration	'	-1,303	'	604
Total operating expenses	23,432	18,467	46,940	41,414
Loss from operations	-7,831	-3,279	-19,582	-14,820
Interest income	72	145	203	277
Interest expense	-342	-145	-505	-299
Other expense, net	-273	'	-547	-275
Total interest and other expense, net	-543	'	-849	-297
Loss before income taxes	-8,374	-3,279	-20,431	-15,117
Benefit (provision) for income taxes	90	-377	-93	-317
Loss from continuing operations	-8,284	-3,656	-20,524	-15,434
Income from discontinued operations, net of tax (including gain on disposal of $636, net of tax, for the six months ended June 30, 2012)	'	'	'	170
Net loss	($8,284)	($3,656)	($20,524)	($15,264)
Continuing operations	($0.27)	($0.13)	($0.67)	($0.58)
Discontinued operations	'	'	'	$0.01
Net loss	($0.27)	($0.13)	($0.67)	($0.57)
Weighted average shares used to compute net loss per share attributable to NeoPhotonics Corporation common stockholders:	'	'	'	'
Basic and diluted	30,779,730	28,402,929	30,677,449	26,636,807

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations (Parenthetical) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2012
Discontinued operations gain on disposal, net of tax	$636

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net loss	($8,284)	($3,656)	($20,524)	($15,264)
Foreign currency translation adjustments	689	-472	861	-347
Unrealized gains (losses) on investments, net of tax of $0	-35	-60	-54	236
Comprehensive loss	($7,630)	($4,188)	($19,717)	($15,375)

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Unrealized gains (losses) on investments, tax	$0	$0	$0	$0

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities	'	'
Net loss	($20,524)	($15,264)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'
Depreciation and amortization	9,512	9,827
Stock-based compensation expense	2,675	2,153
Deferred taxes	-6	387
Amortization of premiums and discounts on investments	669	386
Gain on sale of discontinued operations	'	-750
Allowance for doubtful accounts	-144	93
Write-down of inventories	849	2,931
Others	465	82
Change in assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable	-1,766	-6,771
Inventories	-1,577	-8,081
Prepaid expenses and other current assets	47	-1,303
Accounts payable	2,308	3,763
Acquisition-related transaction costs	3,282	'
Accrued and other liabilities	104	733
Net cash used in operating activities	-4,106	-11,814
Cash flows from investing activities	'	'
Purchase of property, plant and equipment	-10,545	-4,965
Proceeds from disposition of property, plant and equipment	92	'
Purchase of marketable securities	-48,771	-112,773
Proceeds from sale of marketable securities	35,247	53,294
Proceeds from maturity of securities	40,255	29,532
Decrease in restricted cash	859	647
Acquisition, net of cash acquired	-14,979	'
Proceeds received on sale of discontinued operations, net of tax	'	1,825
Net cash provided by (used in) investing activities	2,158	-32,440
Cash flows from financing activities	'	'
Proceeds from issuance of common stock, net of issuance costs	'	39,636
Proceeds from exercise of stock options	572	188
Proceeds from issuance of stock under ESPP	1,162	923
Proceeds from bank loans	26,443	'
Repayment of bank loans	-22,360	-2,500
Proceeds from issuance of notes payable	9,471	12,759
Repayment of notes payable	-12,661	-16,064
Net cash provided by financing activities	2,627	34,942
Effect of exchange rates on cash and cash equivalents	-61	56
Net increase (decrease) in cash and cash equivalents	618	-9,256
Cash and cash equivalents at the beginning of the period	36,940	32,485
Cash and cash equivalents at the end of the period	37,558	23,229
Issuance of notes to the seller of acquired business	$11,130	'

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2013
Basis of Presentation	'
	Note 1. Basis of presentation
	The condensed consolidated financial statements of NeoPhotonics Corporation (“NeoPhotonics” or the “Company”) as of June 30, 2013 and December 31, 2012 and for the three and six months ended June 30, 2013 and 2012, have been prepared in accordance with the instructions on Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). In accordance with those rules and regulations, the Company has omitted certain information and notes normally provided in the Company’s annual consolidated financial statements. In the opinion of management, the condensed consolidated financial statements contain all adjustments, consisting only of normal recurring items, except as otherwise noted, necessary for the fair presentation of the Company’s financial position and results of operations for the interim periods. The year-end condensed balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. generally accepted accounting principles (“U.S. GAAP”). These condensed consolidated financial statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2012. The results of operations for the three and six months ended June 30, 2013 are not necessarily indicative of the results expected for the entire fiscal year. For purposes of these Notes to Condensed Consolidated Financial Statements, amounts have been restated and revised to give effect to the matters described in Note 2.
	Consolidation
	The condensed consolidated financial statements are prepared in accordance with U.S. GAAP and include the consolidated accounts of the Company and its majority owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation.
	Use of Estimates
	The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported revenue and expenses during the reporting period. Significant estimates made by management include: the fair values of identifiable assets acquired and liabilities assumed in business combinations; the useful lives of property, plant and equipment and intangible assets as well as future cash flows to be generated by those assets; allowances for doubtful accounts; valuation allowances for deferred tax assets; write off of excess and obsolete inventories and the valuations of stock-based compensation, among others. Actual results could differ from these estimates.
	Business Combinations—Acquisition Accounting
	Under the acquisition method of accounting, the Company allocates the purchase price of acquired companies to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The Company records the excess of purchase price over the aggregate fair values of the tangible and identifiable intangible assets as goodwill. The Company determines the fair values of assets acquired and liabilities assumed. To establish fair value, the Company measures the price that would be received to sell an asset or paid to transfer a liability in an ordinary transaction between market participants. The measurement assumes the highest and best use of the asset by the market participants that would maximize the value of the asset or the group of assets within which the asset would be used at the measurement date, even if the intended use of the asset is different.
	The Company estimates the economic lives of certain acquired assets and these lives are used to calculate depreciation and amortization expenses. The Company estimates the future cash flows to be derived from such assets, and these estimates are used to determine the fair value of the assets. If any of these estimates change, depreciation or amortization expenses could be changed and/or the value of our intangible assets could be impaired.
	Acquisition related costs, including real estate transaction taxes, finder’s fees, advisory, legal, accounting, valuation and other professional or consulting fees are accounted for as expenses in the periods in which the costs are incurred or the services are received.

Restatement_and_Revision_of_Un

Restatement and Revision of Unaudited Condensed Consolidated Financial Statements	6 Months Ended
	Jun. 30, 2013
Restatement and Revision of Unaudited Condensed Consolidated Financial Statements	'
	Note 2. Restatement and Revision of unaudited condensed consolidated financial statements
	The Company has restated and revised its June 30, 2013 unaudited condensed consolidated financial statements as described below.
	The effects of the restatement and revisions on the condensed consolidated balance sheet as of June 30, 2013 are summarized in the following table:
		30-Jun-13
		(In thousands, except per share data)
		Previously			Corrections			Penalty			Revision for			Restated and
		Reported						Payment			Measurement			Revised
								Derivative			Period
											Adjustments
	ASSETS
	Current assets:
	Cash and cash equivalents	$	37,857		$	(299	)	$	—		$	—		$	37,558
	Short-term investments		36,874			—			—			—			36,874
	Restricted cash		1,813			—			—			—			1,813
	Accounts receivable, net of allowance for doubtful accounts		72,998			—			—			—			72,998
	Inventories		64,164			(15	)		—			(5,922	)		58,227
	Prepaid expenses and other current assets		6,684			306			—			1,873			8,863
	Total current assets		220,390			(8	)		—			(4,049	)		216,333
	Long-term investments		355			—			—			—			355
	Property, plant and equipment, net		65,886			2,045			—			2,830			70,761
	Goodwill		2,084			(2,084	)		—			—			—
	Other intangible assets, net		15,926			(62	)		—			1,498			17,362
	Other long-term assets		3,586			(2,274	)		—			6			1,318
	Total assets	$	308,227		$	(2,383	)	$	—		$	285		$	306,129
	LIABILITIES, REDEEMABLE COMMON STOCK AND STOCKHOLDERS’ EQUITY
	Current liabilities:
	Accounts payable	$	44,115		$	(221	)	$	—		$	—		$	43,894
	Notes payable		9,041			—			—			—			9,041
	Current portion of long-term debt		10,535			(1,750	)		—			—			8,785
	Accrued and other current liabilities		19,708			811			—			11			20,530
	Total current liabilities		83,399			(1,160	)		—			11			82,250
	Long-term debt, net of current portion		26,320			1,750			—			—			28,070
	Deferred income tax liabilities		664			—			—			—			664
	Other noncurrent liabilities		10,030			(2,293	)		138			7			7,882
	Total liabilities		120,413			(1,703	)		138			18			118,866
	Redeemable common stock		5,000			—			(5,000	)		—			—
	Stockholders’ equity:
	Preferred stock, $0.0025 par value		—			—			—			—			—
	Common stock, $0.0025 par value		77			—			—			—			77
	Additional paid-in capital		438,295			—			4,862			—			443,157
	Accumulated other comprehensive income		12,521			74			—			41			12,636
	Accumulated deficit		(268,079	)		(754	)		—			226			(268,607	)
	Total stockholders’ equity		182,814			(680	)		4,862			267			187,263
	Total liabilities, redeemable common stock and stockholders’ equity	$	308,227		$	(2,383	)	$	—		$	285		$	306,129
	The effects of the restatement and revisions on the condensed consolidated statement of operations for the three months ended June 30, 2013 are summarized in the following table:
		Three Months Ended June 30, 2013
		(In thousands, except share and per share information)
		Previously			Corrections			Revision for			Restated and
		Reported						Measurement			Revised
								Period
								Adjustments
	Revenue	$	74,990		$	—		$	—		$	74,990
	Cost of goods sold		59,805			1			(417	)		59,389
	Gross profit		15,185			(1	)		417			15,601
	Operating expenses:
	Research and development		11,311			(245	)		21			11,087
	Sales and marketing		3,369			(20	)		—			3,349
	General and administrative		8,470			21			79			8,570
	Amortization of purchased intangible assets		362			—			64			426
	Total operating expenses		23,512			(244	)		164			23,432
	Loss from operations		(8,327	)		243			253			(7,831	)
	Interest income		72			—			—			72
	Interest expense		(342	)		—			—			(342	)
Other expense, net		(273	)		—			—			(273	)
Total interest and other expense, net		(543	)		—			—			(543	)
Loss before income taxes		(8,870	)		243			253			(8,374	)
Provision for income taxes		(662	)					752			90
Net loss	$	(9,532	)	$	243		$	1,005		$	(8,284	)
Basic and diluted net loss per share:
Net loss	$	(0.31	)							$	(0.27	)
Weighted average shares used to compute basic and diluted net loss per share		30,779,730									30,779,730
The effects of the restatement and revision on the condensed consolidated statement of comprehensive loss for the three months ended June 30, 2013 are summarized in the following table:
	Three Months Ended June 30, 2013
	(In thousands)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Net loss	$	(9,532	)	$	243		$	1,005		$	(8,284	)
Foreign currency translation adjustments		587			61			41			689
Unrealized loss on investments, net of tax of $0		(35	)		—			—			(35	)
Comprehensive loss	$	(8,980	)	$	304		$	1,046		$	(7,630	)
The effects of the restatement and revision on the condensed consolidated statement of operations for the six months ended June 30, 2013 are summarized in the following table:
	Six Months Ended June 30, 2013
	(In thousands, except share and per share information)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Revenue	$	131,053		$	—		$	—		$	131,053
Cost of goods sold		104,138			(26	)		(417	)		103,695
Gross profit		26,915			26			417			27,358
Operating expenses:
Research and development		21,018			(245	)		21			20,794
Sales and marketing		6,955			(20	)		—			6,935
General and administrative		17,340			1,045			79			18,464
Amortization of purchased intangible assets		683			—			64			747
Total operating expenses		45,996			780			164			46,940
Loss from operations		(19,081	)		(754	)		253			(19,582	)
Interest income		203			—			—			203
Interest expense		(505	)		—			—			(505	)
Other expense, net		(547	)		—			—			(547	)
Total interest and other expense, net		(849	)		—			—			(849	)
Loss before income taxes		(19,930	)		(754	)		253			(20,431	)
Provision for income taxes		(66	)		—			(27	)		(93	)
Net loss	$	(19,996	)	$	(754	)	$	226		$	(20,524	)
Basic and diluted net loss per share:
Net loss	$	(0.65	)							$	(0.67	)
Weighted average shares used to compute basic and diluted net loss per share		30,677,449									30,677,449
The effects of the restatement and revision on the condensed consolidated statement of comprehensive loss for the six months ended June 30, 2013 are summarized in the following table:
	Six Months Ended June 30, 2013
	(In thousands)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Net loss	$	(19,996	)	$	(754	)	$	226		$	(20,524	)
Foreign currency translation adjustments		747			73			41			861
Unrealized loss on investments, net of tax of $0		(54	)		—			—			(54	)
Comprehensive loss	$	(19,303	)	$	(681	)	$	267		$	(19,717	)
The effects of the restatement and revisions on the condensed consolidated statement of cash flows for the six months ended June 30, 2013 are summarized in the following table:
	Six Months Ended June 30, 2013
	(In thousands)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Cash flows from operating activities
Net loss	$	(19,996	)	$	(754	)	$	226		$	(20,524	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		9,769			(546	)		289			9,512
Stock-based compensation expense		2,675			—			—			2,675
Deferred taxes		(6	)		—			—			(6	)
Amortization of premiums and discounts on investments		669			—			—			669
Allowance for doubtful accounts		(144	)		—			—			(144	)
Write-down of inventories		831			—			18			849
Others		471			—			(6	)		465
Change in assets and liabilities, net of effects of acquisitions:
Accounts receivable		(1,766	)		—			—			(1,766	)
Inventories		(838	)		(187	)		(552	)		(1,577	)
Prepaid expenses and other current assets		(48	)		97			(2	)		47
Accounts payable		4,346			(2,038	)		—			2,308
Acquisition-related transaction costs		2,524			758			—			3,282
Accrued and other liabilities		(2,590	)		2,667			27			104
Net cash used in operating activities		(4,103	)		(3	)		—			(4,106	)
Cash flows from investing activities
Purchase of property, plant and equipment		(10,300	)		(245	)		—			(10,545	)
Proceeds from disposition of property, plant and equipment		92			—			—			92
Purchase of marketable securities		(48,771	)		—			—			(48,771	)
Proceeds from sale of marketable securities		35,247			—			—			35,247
Proceeds from maturity of securities		40,255			—			—			40,255
Decrease in restricted cash		859			—			—			859
Acquisition, net of cash acquired		(14,928	)		(51	)		—			(14,979	)
Net cash provided by (used in) investing activities		2,454			(296	)		—			2,158
Cash flows from financing activities
Proceeds from exercise of stock options		572			—			—			572
Proceeds from issuance of stock under ESPP		1,162			—			—			1,162
Proceeds from bank loans		40,000			(13,557	)		—			26,443
Repayment of bank loans		(35,917	)		13,557			—			(22,360	)
Proceeds from issuance of notes payable		9,471			—			—			9,471
Repayment of notes payable		(12,661	)		—			—			(12,661	)
Net cash provided by financing activities		2,627			—			—			2,627
Effect of exchange rates on cash and cash equivalents		(61	)		—			—			(61	)
Net increase (decrease) in cash and cash equivalents		917			(299	)		—			618
Cash and cash equivalents at the beginning of the period		36,940			—			—			36,940
Cash and cash equivalents at the end of the period	$	37,857		$	(299	)	$	—		$	37,558
Corrections
Subsequent to the initial filing of its Quarterly Report on Form 10-Q for the period ended June 30, 2013, the Company determined that its condensed consolidated financial statements as of June 30, 2013 and for the three and six months then ended contained  errors requiring restatement.  As further described below, the restatement reflects corrections related to the purchase of NeoPhotonics Semiconductor (formerly the Optical Component Unit of LAPIS Semiconductor), classification of certain amounts and other corrections.  The restatement adjustments include consideration of the related income tax effect.
Purchase Accounting Corrections
The Company has concluded that a real estate registration tax in the amount of $0.5 million was incorrectly allocated to property, plant and equipment acquired as part of the purchase of NeoPhotonics Semiconductor and should have been expensed.  Additionally, the Company identified (i) real estate acquisition tax in the amount of $0.8 million that should have been accrued as an acquisition cost in the six months ended June 30, 2013, (ii) a correction to the estimated fair value of property and equipment that increased property and equipment and reduced goodwill by $2.1 million, (iii) unrecorded liabilities related to warranty obligation adjustments that were omitted at March 31, 2013, resulting in an understatement of current liabilities of $0.1 million at June 30, 2013 and (iv) an overstatement of cost of goods sold of $0.1 million and an overstatement of research and development expenses of $0.2 million for the three and six months ended June 30, 2013. The Company also misclassified payments to Lapis of $0.9 million as cash used in operating activities rather than cash used in investing activities in the statement of cash flows for the six months ended June 30, 2013.
Classification Corrections
The Company has concluded that it incorrectly separately classified a long-term asset related to the pension obligation assumed in the purchase of NeoPhotonics Semiconductor in the amount of $2.1 million that should instead have been netted against the long-term pension liability at June 30, 2013.  Additionally, the Company (i) overstated the current portion of long-term debt by $1.8 million at June 30, 2013, (ii) misclassified $0.3 million of cash held by a service provider as cash and cash equivalents at June 30, 2013 that should have been classified as a prepaid and other asset, (iii) misclassified certain costs between cost of goods sold and operating expenses of $0.1 million and $0.3 million in the three and six months ended June 30, 2013, respectively, and (iv) misclassified $1.7 million between the change in accounts payable and the change in accrued and other liabilities within operating activities and overstated both proceeds from and repayment of bank loans by $13.6 million within financing activities in its condensed consolidated statement of cash flows for the six months ended June 30, 2013.
Other Corrections
The Company concluded that it had incorrectly recorded amounts related to an asset retirement obligation resulting in an overstatement of other long-term liabilities of $0.3 million at June 30, 2013 and had incorrectly recorded certain purchased software maintenance contracts which resulted in an overstatement of property, plant and equipment of $0.2 million at June 30, 2013.  The Company also overstated amounts payable to two vendors, resulting in an overstatement of previously reported cost of goods sold and operating expenses by $0.2 million and $0.3 million for the three and six months ended June 30, 2013, respectively and understated an accrued expense, resulting in an understatement of operating expenses by $0.1 million for the three and six months ended June 30, 2013.
Penalty Payment Derivative
As further described in Note 11, the Company may be required to pay a $5.0 million penalty if it does not achieve certain performance obligations agreed to in connection with the sale of its common stock in a private placement transaction on April 27, 2012.  The penalty payment was originally classified outside of equity as redeemable common stock at December 31, 2012 and June 30, 2013 since, while the Company intends to meet its performance obligations, it determined the ability to satisfy some of the obligations may be outside of the Company’s control.  The Company has since determined that the $5.0 million penalty payment is an embedded derivative instrument, with the underlying being the performance or nonperformance of meeting its performance obligations by the deadline, and has thus classified $4.9 million of the $5.0 million to additional paid-in capital and the remaining $0.1 million, representing the estimated fair value of the penalty payment derivative, to other noncurrent liabilities at June 30, 2013 and December 31, 2012.  The effect on the Company’s balance sheet at December 31, 2012 for this matter was as follows:
		31-Dec-12
(in thousands)		Previously			As Revised
		Reported
Other noncurrent liabilities		$	1,724		$	1,862
Redeemable common stock			5,000			—
Additional paid-in capital			433,996			438,858
Revision for Purchase Price Allocation Measurement Period Adjustments
With the reissuance of the these condensed consolidated financial statements, the Company has revised its June 30, 2013 condensed consolidated balance sheet and its condensed consolidated statements for the three and six months ended June 30, 2013 from amounts previously reported to reflect measurement period adjustments  in the estimated fair value of inventory, property and equipment and other tangible and intangible assets acquired in the purchase of NeoPhotonics Semiconductor.  The changes in estimated fair value resulted from additional information obtained subsequent to the Company’s initial acquisition accounting. The Company also recorded an initial valuation allowance against the NeoPhotonics Semiconductor deferred tax assets as a measurement period adjustment in the three months ended March 31, 2013, rather than during the three months ended June 30, 2013 due to additional information received subsequent to the Company’s initial acquisition accounting.
Notes to Condensed Consolidated Financial Statements
In addition to the above adjustments, there were computational errors in deriving certain footnote amounts included within the Company’s initial Quarterly Report on Form 10-Q.  Those amounts have been corrected herein.

Significant_Accounting_Policie

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2013
Significant Accounting Policies	'
	Note 3. Significant accounting policies
	Except as described in Note 2, there have been no changes in the Company’s significant accounting policies for the six months ended June 30, 2013, as compared to the significant accounting policies described in its Annual Report on Form 10-K for the fiscal year ended December 31, 2012.
	Recent accounting pronouncements
	In February 2013, the Financial Accounting Standard Board (“FASB”) issued amendments to the FASB Accounting Standard Codification to improve the reporting of reclassifications out of accumulated other comprehensive income. The amendments require new disclosures for items reclassified out of accumulated other comprehensive income (“AOCI”), including (1) changes in AOCI balances by component and (2) significant items reclassified out of AOCI. The guidance does not amend any existing requirements for reporting net income or OCI in the financial statements. As this guidance only requires expanded disclosures, the adoption of this guidance did not have a material effect on the Company’s consolidated financial statements.
	In March 2013, the FASB issued amendments to the FASB Accounting Standard Codification, which indicates that the entire amount of a cumulative translation adjustment related to an entity’s investment in a foreign entity should be released when there has been a (i) sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity, (ii) loss of a controlling financial interest in an investment in a foreign entity, or (iii) step acquisition for a foreign entity. The amendments are effective prospectively for fiscal years beginning after December 15, 2013. Early adoption is permitted. The adoption of this guidance is not expected to have a material impact to the Company’s consolidated financial statements.
	In July 2013, the FASB issued amendments to the FSAB Accounting Standard Codification on Income Taxes, to improve the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This guidance is expected to reduce diversity in practice and is expected to better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exists. This guidance is effective for reporting periods beginning after December 15, 2013. The adoption of this guidance is not expected to have a material impact to the Company’s consolidated financial statements.

Discontinued_Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2013
Discontinued Operations	'
	Note 4. Discontinued operations
	In the fourth quarter of 2011, the Company initiated a plan to sell a component of its business, Broadband, a subsidiary in China. The Company decided to sell Broadband because the nature of its operations was different than the core technology and strategy of the Company. On January 11, 2012, the Company entered into a purchase agreement with Guangdong Rainbow Electronic Ltd. (Rainbow) to dispose of its 100% equity interest in Broadband for a total cash consideration of RMB 13.0 million ($2.1 million). The transaction closed on March 13, 2012. The Company recognized a gain of $0.6 million on the sale of Broadband, representing the difference between the consideration received and the net assets transferred to Rainbow, net of tax. The gain was included in income from discontinued operations, net of tax in the statement of operations for the six months ended June 30, 2012.
	The results of operations associated with Broadband are presented as discontinued operations in the Company’s consolidated statements of operations for the three and six months ended June 30, 2013 and 2012. Revenue and the components of net income related to the discontinued operations for all periods were as follows (in thousands):
		Three Months Ended				Six Months Ended
		June  30,				June  30,
		2013		2012		2013		2012
	Revenue	$	—	$	—	$	—	$	590
	Income from discontinued operations before income taxes		—		—		—		284
	Provision for income taxes		—		—		—		(114	)
	Income from discontinued operations	$	—	$	—	$	—	$	170

Cash_Equivalents_and_Investmen

Cash Equivalents and Investments	6 Months Ended
	Jun. 30, 2013
Cash equivalents and investments and fair value disclosures	'
	Note 5. Cash equivalents and investments and fair value disclosures
	Cash equivalents and investments
	The following table summarizes the Company’s unrealized gains and losses related to the cash equivalents and investments in marketable securities designated as available-for-sale (in thousands):
			As of June 30, 2013										As of December 31, 2012
			Amortized		Gross		Gross			Fair			Amortized		Gross		Gross			Fair
			Cost		Unrealized		Unrealized			Value			Cost		Unrealized		Unrealized			Value
					Gains		Losses								Gains		Losses
	Cash and cash equivalents
	Money market funds		$	11	$	—	$	—		$	11		$	11	$	—	$	—		$	11
	Short-term investments
	Money market funds			13,098		—		—			13,098			7,259		—		—			7,259
	Corporate bonds			13,657		20		(3	)		13,674			23,151		43		(1	)		23,193
	U.S. federal agencies			3,060		1		—			3,061			27,241		10		—			27,251
	Foreign bonds and notes			5,245		5		(10	)		5,240			4,682		14		—			4,696
	Municipal obligations			1,801		—		—			1,801			1,902		—		—			1,902
	Total investments in short-term investments			36,861		26		(13	)		36,874			64,235		67		(1	)		64,301
	Total investments		$	36,872	$	26	$	(13	)	$	36,885	(1)	$	64,246	$	67	$	(1	)	$	64,312	(1)
	-1	Interest income receivable included in total investments balance was $0.2 million and $0.4 million at June 30, 2013 and December 31, 2012, respectively.
	As of June 30, 2013 and December 31, 2012, maturities of short-term investments are as follows (in thousands):
			June 30,		December 31,
			2013		2012
	Less than 1 year		$	33,090	$	51,861
	Due in 1 to 2 years			—		10,550
	Due in 2 to 5 years			1,994		—
	Due after 5 years			1,801		1,901
	Total		$	36,885	$	64,312
	The Company may sell its security investments in the future to fund future operation needs. As a result, the Company recorded all its marketable securities in short-term investment as of June 30, 2013 and December 31, 2012, regardless of the contractual maturity date of the securities.
	Realized gains and losses on the sale of marketable securities during the three and six months ended June 30, 2013 and 2012 were immaterial. The Company did not recognize any impairment losses on its marketable securities during the three and six months ended June 30, 2013 and 2012. As of June 30, 2013, the Company did not have any investments in marketable securities that were in an unrealized loss position for a period in excess of 12 months.
	Fair value disclosures
	The following table sets forth the fair value of the Company’s financial assets as of the dates presented (in thousands):
			As of June 30, 2013										As of December 31, 2012
			Level 1		Level 2		Level 3			Total			Level 1		Level 2		Level 3			Total
	Money market funds		$	13,109	$	—	$	—		$	13,109		$	7,270	$	—	$	—		$	7,270
	Marketable securities
	Corporate bonds			—		13,674		—			13,674			—		23,193		—			23,193
	U.S. federal agencies			—		3,061		—			3,061			—		27,251		—			27,251
	Foreign bonds and notes			—		5,240		—			5,240			—		4,696		—			4,696
	Municipal obligations			—		1,801		—			1,801			—		1,902		—			1,902
			$	13,109	$	23,776	$	—		$	36,885		$	7,270	$	57,042	$	—		$	64,312
	Additionally, the Company’s cash and cash equivalents at June 30, 2013 and December 31, 2012 included time deposits of $6.4 million and $14.7 million, respectively, for which the fair value approximates the carrying amount using inputs classified as level 2 in the fair value hierarchy.
	The following table sets forth the fair value of the Company’s financial liabilities as of the dates presented (in thousands):
			As of June 30, 2013										As of December 31, 2012
			Level 1		Level 2		Level 3			Total			Level 1		Level 2		Level 3			Total
	Contingent consideration (Note 10)		$	—	$	—	$	959		$	959		$	—	$	—	$	959		$	959
	Penalty payment derivative (Note 11)		$	—	$	—	$	138		$	138		$	—	$	—	$	138		$	138

Net_Loss_Per_Share

Net Loss Per Share	6 Months Ended
	Jun. 30, 2013
Net Loss Per Share	'
	Note 6. Net loss per share
	The following table sets forth the computation of the basic and diluted net loss per share for the periods indicated (in thousands, except share and per share amounts):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2013			2012			2013			2012
	Numerator:
	Loss from continuing operations	$	(8,284	)	$	(3,656	)	$	(20,524	)	$	(15,434	)
	Income from discontinued operations		—			—			—			170
	Net loss	$	(8,284	)	$	(3,656	)	$	(20,524	)	$	(15,264	)
	Denominator:
	Weighted average shares used to compute basic and diluted net income (loss) per share		30,779,730			28,402,929			30,677,449			26,636,807
	Basic and diluted net income (loss) per share:
	Continuing operations	$	(0.27	)	$	(0.13	)	$	(0.67	)	$	(0.58	)
	Discontinued operations	$	—		$	—		$	—		$	0.01
	Net loss	$	(0.27	)	$	(0.13	)	$	(0.67	)	$	(0.57	)
	Shares of common stock subject to repurchase resulting from the early exercise of employee stock options are not considered participating securities and are therefore excluded from the basic weighted average common shares outstanding.
	The following potentially dilutive securities were excluded from the computation of diluted net loss per share attributable to NeoPhotonics Corporation common stockholders, as their effect would have been antidilutive:
		June 30,
			2013			2012
	Employee stock options		3,780,345			2,668,630
	Restricted stock units		853,129			648,404
	Employee stock purchase plan		245,091			269,514
	Common stock warrants		4,482			4,482
			4,883,047			3,591,030

Business_Combination

Business Combination	6 Months Ended
	Jun. 30, 2013
Business Combination	'
	Note 7. Business Combination
	NeoPhotonics Semiconductor
	On March 29, 2013 (the “closing date”) the Company acquired certain assets and assumed certain liabilities related to the Optical Components Business Unit (the “OCU”) of LAPIS Semiconductor Co., Ltd., a wholly owned subsidiary of Rohm Co., Ltd (“LAPIS”) of Japan with the intention of operating the OCU as an ongoing business. The business is now known as NeoPhotonics Semiconductor.
	NeoPhotonics Semiconductor is a leader in high speed semiconductor and high speed laser and photodetector devices for communications networks. The Company believes the acquisition will expand the Company’s solutions for high speed telecom and datacom applications and strengthen the Company’s customer base in Japan.
	Total consideration for NeoPhotonics Semiconductor was approximately $24.3 million, including cash of $15.0 million paid through June 30, 2013 and notes payable of $11.1 million, partially offset by a net receivable from Lapis of $1.8 million related to a working capital adjustment and certain other payments between the Company and Lapis. The cash of $15.0 million included $2.0 million that was withheld and placed into escrow to cover certain indemnity obligations from the closing date through March 29, 2014. The notes payable of $11.1 million are to be paid in three equal installments on the first, second and third anniversaries of the closing date. Each year an additional amount calculated as 1.5% per year of the unpaid balance of the notes becomes due. LAPIS retains a lien on the land and building sold until the third payment is paid. The purchase price consideration and payment of notes payable are denominated in Japanese Yen.
	In connection with the acquisition, the Company incurred approximately $5.2 million in acquisition-related transaction costs in the six months ended June 30, 2013 related to investment banking, legal, accounting and other professional services and fees and transfer and acquisition taxes related to real property acquired. The acquisition costs were expensed as incurred and were included in operating expenses in the Company’s consolidated statement of operations.
	The results of operations of NeoPhotonics Semiconductor and the estimated fair values of the assets acquired and liabilities assumed have been included in our consolidated financial statements since the date of the acquisition. For the three and six months ended June 30, 2013, NeoPhotonics Semiconductor‘s contribution to total revenues was $11.4 million. The portion of total expenses and net loss associated with NeoPhotonics Semiconductor cannot be separately identified due to the integration with our operations.
	Assets Acquired and Liabilities Assumed
	The Company accounted for its acquisition of the NeoPhotonics Semiconductor assets and assumed liabilities as a business combination. NeoPhotonics Semiconductor’s tangible and identifiable intangible assets acquired and liabilities assumed were recorded based upon their estimated fair values as of the closing date of the acquisition. After consideration of the purchase accounting corrections (see Note 2), the estimated fair values of the identifiable assets acquired and liabilities assumed approximated the purchase price; therefore, no goodwill was recorded.
	During the quarter ended September 30, 2013 the Company updated its initial preliminary fair value assessment and has reflected the resulting measurement period adjustments as Revisions in these condensed consolidated financial statements.  These adjustments were based on additional information received subsequent to the Company’s initial assessment that had a significant impact on a number of assumptions, including those related to inventory obsolescence, gross margin and working capital.  The adjustments, net of amortization, included a decrease in the fair value of inventory of $5.9 million and increases in the fair value of property, plant and equipment of $2.8 million and customer relationships of $1.5 million.
	The following table summarizes the acquisition accounting and the tangible and intangible assets acquired as of the date of acquisition and subsequent adjustments (in thousands):
	Total purchase consideration:
	Cash paid through June 30, 2013	$	14,979
	Net receivable from Lapis		(1,851	)
	Notes payable		11,130
		$	24,258
	Liabilities assumed:
	Pension and retirement obligations	$	6,471
	Other compensation-related liabilities		1,083
	Other current liabilities		1,265
		$	8,819
	Fair value of assets acquired:
	Inventory	$	13,309
	Other current assets		35
	Land, property, plant and equipment(1)		14,433
	Intangible assets acquired:
	Developed technology		2,120
	Customer relationships		3,180
		$	33,077
	-1	Includes land of $3.5 million, buildings of $3.9 million and machinery, equipment, furniture and fixtures of $7.0 million.
	The approach for measuring the fair value of the assets acquired and liabilities assumed is described below:
	Net Tangible Assets
	NeoPhotonics Semiconductor’s tangible assets acquired and liabilities assumed as of March 29, 2013 were recorded at estimated fair value with the exception of the pension and retirement obligations. The Company estimated fair value by adjusting NeoPhotonics Semiconductor’s historical value of property, plant and equipment to an estimate of depreciated replacement cost, adjusted for economic obsolescence. The Company depreciates property, plant and equipment over estimated lives of 2 to 10 years, and records the expense to cost of goods sold and operating expense. The fair value of inventory acquired was determined using a net realizable value approach based upon the expected sales value of the inventory, less any costs to complete and selling costs along with a reasonable profit margin based on historical and expected results. The fair value of accrued liabilities approximated the amounts due under the arrangements with employees and vendors due to short maturity. Pensions and retirement obligations are recorded to the extent the projected benefit obligation exceeded the fair value of the plan assets estimated as of March 29, 2013. The projected benefit obligation is measured at the actuarial present value of all benefits attributed by the plan's benefit formula to employee service rendered before March 29, 2013.
	Intangible Assets
	Developed technology represents products that have reached technological feasibility. NeoPhotonics Semiconductor’s current product offerings include high speed semiconductor and high speed laser and photodetector devices for communication networks. The fair value of developed technology intangibles acquired was determined by using a royalty-avoidance method. The share of future revenue relating to current technology was forecasted, using an estimate for obsolescence such that the share declines over time. A royalty rate of two percent was used to calculate royalty savings on that revenue that are avoided since the Company owns the technology and does not need to license it from other parties. The after-tax royalty savings was then discounted to present value using the Company’s discount rate. The Company amortizes the developed technology intangible assets over estimated lives of 4 to 5 years, and amortization expense is recorded to cost of goods sold.
	The customer relationships asset represents the value of the ability to sell existing, in-process, and future versions of the technology to the NeoPhotonics Semiconductor existing customer base. The Company utilized the excess earnings method, estimating future cash flows that will result from existing customers given assumed retention rates, and then discounting those flows to their present value using the Company’s discount rate. The Company amortizes the customer relationships intangible asset over an average estimated life of 6 years, and amortization expense is recorded to operating expenses.
	The weighted average amortization period for the total amount of intangible assets acquired is 5.4 years.
	Pro Forma Financial Information (unaudited)
	The following unaudited supplemental pro forma information presents the combined results of operations of NeoPhotonics Corporation and OCU for the three and six months ended June 30, 2013 and June 30, 2012 as if the acquisition had been completed at the beginning of fiscal 2012. The pro forma financial information includes adjustments to reflect one time charges and amortization of fair value adjustments in the appropriate pro forma periods as though the companies were combined as of the beginning of 2012. These adjustments include:
		·		Elimination of OCU’s revenues and cost of goods sold on sales to the Company.   Revenues were reduced by $1.0 million and $1.4 million for the three months and six months ended June 30, 2012, respectively, and were reduced $1.9 million in the six months ended June 30, 2013. Cost of goods sold was reduced by $0.9 million and $1.1 million for the three and six months ended June 30, 2012, respectively, and was reduced by $1.8 million for the six months ended June 30, 2013.
		·		Increase in cost of goods sold by $1.4 million and $4.0 million in the three and six months ended June 30, 2012 and decrease in cost of goods sold by $2.1 million in the three and six months ended June 30, 2013 due to a change in the value of inventory as a result of acquisition accounting.
		·		Addition of $0.2 million and $0.8 million of acquisition costs in the three and six months ended June 30, 2012 and elimination of $0.7 million and $5.2 million of acquisition costs in the three and six months ended June 30, 2013.
	The unaudited pro forma results do not assume any operating efficiencies as a result of the consolidation of operations (in thousands, except per share data):
		Three months ended						Six months ended
		June 30,						June 30,
		2013			2012			2013			2012
	Revenue	$	74,990		$	78,805		$	143,744		$	146,342
	Net loss	$	(5,519	)	$	(2,283	)	$	(10,796	)	$	(14,321	)
	Basic and diluted net loss per share	$	(0.18	)	$	(0.08	)	$	(0.35	)	$	(0.54	)
	The pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved had the acquisition taken place at the beginning of the period presented, nor does it intend to be a projection of future results.

Balance_Sheet_Components

Balance Sheet Components	6 Months Ended
	Jun. 30, 2013
Balance Sheet Components	'
	Note 8. Balance sheet components
	Accounts receivable, net
	Accounts receivable, net consists of the following (in thousands):
			June 30,			December 31,
			2013			2012
	Accounts receivable		$	68,265		$	66,338
	Trade notes receivable			5,457			4,979
	Allowance for doubtful accounts			(724	)		(963	)
			$	72,998		$	70,354
	Inventories
	Inventories consist of the following (in thousands):
			June 30,			December 31,
			2013			2012
	Raw materials		$	22,532		$	20,520
	Work in process			19,350			8,603
	Finished goods (1)			16,345			14,670
			$	58,227		$	43,793
	-1	Finished goods inventory at offsite managed inventory locations was $4.4 million and $4.5 million as of June 30, 2013 and December 31, 2012, respectively.
	Purchased intangible assets
	Purchased intangible assets consist of the following (in thousands):
			June 30, 2013									December 31, 2012
			Gross			Accumulated			Net			Gross			Accumulated			Net
			Assets			Amortization			Assets			Assets			Amortization			Assets
	Technology and patents		$	34,456		$	(24,399	)	$	10,057		$	32,176		$	(22,869	)	$	9,307
	Customer relationships			15,083			(8,917	)		6,166			11,898			(8,148	)		3,750
	Leasehold interest			1,386			(247	)		1,139			1,355			(241	)		1,114
	Noncompete agreements			950			(950	)		—			950			(908	)		42
			$	51,875		$	(34,513	)	$	17,362		$	46,379		$	(32,166	)	$	14,213
	Amortization expense relating to technology and patents and the leasehold interest intangible assets is included within cost of goods sold, and customer relationships and the noncompete agreements within operating expenses. The following table presents details of the amortization expense of the Company’s purchased intangible assets as reported in the condensed consolidated statements of operations (in thousands):
			Three Months Ended						Six Months Ended
			June  30,						June 30,
			2013			2012			2013			2012
	Cost of goods sold		$	772		$	616		$	1,200		$	1,214
	Operating expenses			426			321			747			675
	Total		$	1,198		$	937		$	1,947		$	1,889
	The estimated future amortization expense of purchased intangible assets as of June 30, 2013, is as follows (in thousands):
	2013 (remaining 6 months)		$	2,169
	2014			4,456
	2015			4,440
	2016			3,694
	2017			841
	Thereafter			1,762
			$	17,362
	Accrued and other current liabilities
	Accrued and other current liabilities consist of the following (in thousands):
			June 30,			December 31,
						2012
			2013
	Employee-related		$	9,935		$	12,293
	Other			10,595			7,666
			$	20,530		$	19,959
	Other noncurrent liabilities
	Other noncurrent liabilities consist of the following (in thousands):
			June 30,			December 31,
			2013			2012
	Employee-related		$	6,396		$	188
	Payment penalty derivative (Note 11)			138			138
	Other			1,348			1,536
			$	7,882		$	1,862
	Warranty Accrual
	The Company provides warranties to cover defects in workmanship, materials and manufacturing for a period of one to two years to meet the stated functionality as agreed to in each sales arrangement. Products are tested against specified functionality requirements prior to delivery, but the Company nevertheless from time to time experiences claims under its warranty guarantees. The Company accrues for estimated warranty costs under those guarantees based upon historical experience, and for specific items, at the time their existence is known and the amounts are determinable.
	The table below summarizes the movement in the warranty accrual (in thousands):
			Three Months Ended						Six Months Ended
June  30,					June 30,
		2013			2012			2013			2012
Beginning balance		$	1,184		$	1,215		$	1,072		$	1,443
Warranty accruals			408			134			434			153
Settlements and adjustments			(131	)		(51	)		(45	)		(298	)
Ending balance		$	1,461		$	1,298		$	1,461		$	1,298

Debt

Debt	6 Months Ended
	Jun. 30, 2013
Debt	'
	Note 9. Debt
	The Company records debt at its carrying amount. The Company uses a market approach to determine fair value, which results in a Level 2 fair value measurement. The following table provides the components of debt, obligations, weighted average interest rate and additional fair value information relating to the Company’s outstanding debt instruments (in thousands, except percentages):
			June 30, 2013							December 31, 2012
			Carrying		Fair		Weighted			Carrying		Fair		Weighted
			Amount		Value		Average			Amount		Value		Average
							Interest							Interest
							Rate							Rate
	Notes payable		$	9,041	$	9,041				$	12,003	$	12,003
	Notes payable related to OCU acquisition			3,535		3,535		1.5	%		—		—
	Short-term debt			5,250		5,250		2.94	%		5,000		4,892		2.2	%
	Total short-term debt		$	8,785	$	8,785				$	5,000	$	4,892
	Long-term notes payable related to OCU acquisition			7,070		7,070		1.5	%		0		0
	Long-term debt			21,000		21,000		2.94	%		17,167		16,336		2.2	%
	Total long-term debt		$	28,070	$	28,070				$	17,167	$	16,336
	Notes payable
	The Company frequently directs its banking partners to issue notes payable to its suppliers in China in exchange for accounts payable. These banks issue notes to vendors and issue payment to the vendors upon redemption. The Company owes the payable balance to the issuing bank. These notes are unsecured, noninterest bearing and are due approximately six months after issuance. As a condition of the notes payable lending arrangements, the Company is required to keep a compensating balance at the issuing banks that is a percentage of the total notes payable balance until the notes payable are paid by its subsidiaries in China.  These balances are classified as restricted cash on the Company’s condensed consolidated balance sheets.  As of June 30, 2013, restricted cash totaled $1.8 million.
	Notes payable for NeoPhotonics Semiconductor acquisition
	In connection with the acquisition of NeoPhotonics Semiconductor on March 29, 2013, the Company is obligated to pay 1,050 million Japanese Yen in three equal installments on the first, second and third anniversaries of the closing date for the purchase of the real estate used by the NeoPhotonics Semiconductor. The payment is denominated in Japanese Yen. The amount presented in the table is the short-term portion of $3.5 million and the long-term portion of $7.1 million. The obligation bears interest at 1.5% per year and the real estate property is security for the loan.
	Long-term debt
	The Company has lending arrangements with several financial institutions, including a loan and security agreement with Comerica Bank in the U.S., which has been amended several times. As of December 31, 2012, the Company’s loan and security agreement in the U.S. included the following components:
		·		As of December 31, 2012, $8.0 million was outstanding under the revolving line of credit agreement and $0.0 million was available for borrowing. Borrowings under this facility bear interest at a rate of LIBOR plus 2%.
		·		As of December 31, 2012, no amounts were outstanding under the equipment advance line advance and all $7.0 million was available for borrowing. Borrowings under this facility would bear interest at a rate of LIBOR plus 2%.
		·		As of December 31, 2012, $14.2 million was outstanding under the acquisition advance and $5.8 million was available for borrowing. The advances bear interest at a rate of LIBOR plus 2%.
	On March 21, 2013, the Company amended and restated in its entirety Loan and Security Agreement with the same bank and added East-West Bank as a lender. The components of the available credit facilities as of June 30, 2013 are as follows:
		·		As of June 30, 2013, no amount was outstanding under the revolving line of credit agreement and all $20.0 million was available for borrowing subject to covenant requirements. Amounts are due on or before March 2016 and borrowings under this revolving line of credit include an interest rate option of a base rate as defined in the agreement plus 1.5% or LIBOR plus 2.5%. As of June 30, 2013 the rate on the LIBOR option was 2.69%.
		·		As of June 30, 2013, $26.3 million was outstanding under the term loan of the credit facility and interest is payable quarterly in arrears; the principal is paid in equal quarterly installments over the term of the loan ending in June 2017. Borrowings under the term loan include an interest rate option of     a base rate as defined in the agreement plus 1.75% or LIBOR plus 2.75%. As of June 30, 2013 the rate on the LIBOR option was 2.94%.
	The Company’s U.S. loan and security agreement requires it to maintain specified financial covenants, including a liquidity ratio, restricts its ability to incur additional debt or to engage in specified transactions and is secured by substantially all of its U.S. assets, other than intellectual property assets. As of June 30, 2013 and December 31, 2012, the Company was in compliance with the covenants contained in this agreement.
	In connection with the original loan and security agreement in 2007, the Company issued a warrant to Comerica Bank to purchase 4,482 shares of common stock at an exercise price of $29.00 per share. As of June 30, 2013 the warrant had not been exercised.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2013
Commitments and Contingencies	'
	Note 10. Commitments and contingencies
	Leases
	The Company leases various facilities under noncancelable operating leases. As of June 30, 2013, the future minimum commitments under all operating leases are as follows (in thousands):
	2013 (remaining 6 months)	$	1,161
	2014		1,583
	2015		1,342
	2016		744
	2017		500
	Thereafter		968
		$	6,298
	Rent expense under the Company’s operating leases was $0.5 million and $0.5 million for the three months ended June 30, 2013 and 2012, respectively, and $1.1 million and $1.1 million for the six months ended June 30, 2013 and 2012, respectively.
	Litigation
	From time to time, the Company is subject to various claims and legal proceedings, either asserted or unasserted, that arise in the ordinary course of business. The Company accrues for legal contingencies if the Company can estimate the potential liability and if the Company believes it is more likely than not that the case will be ruled against it. If a legal claim for which the Company did not accrue is resolved against it, the Company would record the expense in the period in which the ruling was made. The Company does not believe that the ultimate amount of liability, if any, for any pending claims of any type (alone or combined) will materially affect the Company’s financial position, results of operations or cash flows. The ultimate outcome of any litigation is uncertain, however, and unfavorable outcomes could have a material negative impact on the Company’s financial condition and operating results. Regardless of outcome, litigation can have an adverse impact on the Company because of defense costs, negative publicity, diversion of management resources and other factors.
	On January 5, 2010, Finisar Corporation, or Finisar, filed a complaint in the U.S. District Court for the Northern District of California against Source Photonics, Inc., MRV Communications, Inc., Oplink Communications, Inc. and the Company, or collectively, the co-defendants. In the complaint, Finisar alleged infringement of certain of its U.S. patents arising from the codefendants’ respective manufacture, importation, use, sale of or offer to sell certain optical transceiver products. Finisar sought to recover unspecified damages, up to treble the amount of actual damages, together with attorneys’ fees, interest and costs. Finisar alleged that at least some of the patents asserted are a part of certain digital diagnostic standards for optoelectronics transceivers, and, therefore, are being utilized in such digital diagnostic standards. On March 23, 2010, the Company filed an answer to the complaint and counterclaims, asserting two claims of patent infringement and additional claims asserting that Finisar has violated state and federal competition laws and violated its obligations to license on reasonable and non-discriminatory terms. On May 5, 2010, the court dismissed without prejudice all co-defendants (including the Company) except Source Photonics, Inc., on grounds that such claims should have been asserted in four separate lawsuits, one against each defendant. This dismissal without prejudice does not prevent Finisar from bringing a new similar lawsuit against the Company. The Company and Finisar had agreed to suspend their respective claims for a 90 day period and not to refile the originally asserted claims against each other until one or more specified events occur resulting in the partial or complete resolution of the litigation between Source Photonics and Finisar. On September 10, 2010, Source Photonics and Finisar settled their lawsuit, commencing the suspension period, which ended in December 2010. On January 18, 2011, the Company and Finisar again agreed to suspend their respective claims and not to refile the originally asserted claims against each other until at least 90 days after one or more specified events occur resulting in the partial or complete resolution of litigation involving the same Finisar patents between Oplink Communications, Inc. and Finisar. This tolling period expired on April 30, 2012. On May 3, 2012 the Company and Finisar agreed to further toll their respective claims until the refiling of certain of the previously asserted claims from this dispute. As a result, Finisar is permitted to bring a new lawsuit against the Company if it chooses to do so, and the Company may bring new claims against Finisar upon seven days written notice prior to filing such claims. The Company is currently unable to predict the outcome of this dispute and therefore cannot determine the likelihood of loss nor estimate a range of possible loss.
	Indemnifications
	In the normal course of business, the Company enters into agreements that contain a variety of representations and warranties and provide for general indemnification. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future, but have not yet been made. To date, the Company has not paid any claims or been required to defend any action related to its indemnification obligations. However, the Company may record charges in the future as a result of these indemnification obligations. As of June 30, 2013, the Company does not have any material indemnification claims that were probable or reasonably possible.
	Purchase obligations
	The Company has purchase obligations with certain suppliers for the purchase of goods and services entered in the ordinary course of business. As of June 30, 2013, total outstanding purchase obligations were $29.3 million, primarily due within the next 12 months.
	Other contingencies
	In connection with the Company’s acquisition of Santur that the Company completed in October 2011, the Company may be required to pay up to an additional $7.5 million in cash as further consideration for the business acquisition, contingent upon Santur’s gross profit performance during 2012. The fair value of the contingent consideration is re-measured each reporting period and any changes in the fair value of the contingent consideration are recognized as a gain or loss in the consolidated statements of operations. As of June 30, 2013 and December 31, 2012, the Company estimated the fair value of the contingent consideration was $1.0 million and $1.0 million, respectively, and has included this liability within accrued and other current liabilities in its condensed consolidated balance sheets.  The Company classifies this liability within level 3 as it is valued using significant unobservable inputs. To estimate the fair value, the Company used Santur’s gross profit as defined in the acquisition agreement and an estimated discount rate. Although the Company believes the fair value of the contingent consideration is in accordance with the terms of the Santur acquisition agreements, the selling parties dispute the final amount to be paid. Any adjustment to the fair value of the contingent consideration may impact the results of operations in the period the adjustment is made.

Stockholders_Equity

Stockholder's Equity	6 Months Ended
	Jun. 30, 2013
Stockholder's Equity	'
	Note 11. Stockholders’ equity
	Common Stock
	As of June 30, 2013, the Company had reserved the following shares of authorized but unissued common stock:
		Common Stock
	Stock option plans		6,471,511
	Stock purchase plan		594,874
	Warrants		4,482
			7,070,867
	Private Sale of Common Stock
	On April 27, 2012, the Company issued and sold approximately 4.97 million shares of its common stock in a private placement transaction at a price of $8.00 per share for a gross amount of approximately $39.8 million.
	The shares of common stock are restricted from transfer pursuant to a lockup agreement for up to two years, at the end of which the Company is obligated to file one or more registration statements covering the potential resale of the shares of common stock.
	In connection with this private placement transaction, the Company agreed to certain performance obligations including establishing a wholly-owned subsidiary in the Russian Federation and making a $30.0 million investment commitment (the ‘Investment Obligation’) towards the Company’s Russian operations. The Investment Obligation can be partially satisfied by investment outside of the Russian Federation and/or by way of non-cash asset transfers, including but not limited to capital equipment, small tools, intellectual property, and other intangibles.  A minimum of $15.0 million of the Investment Obligation is required to be satisfied by making capital expenditures and the remaining $15.0 million can be satisfied through general working capital and research and development expenditures.  All of the amount for general working capital can be spent either inside or outside of Russia.  However, at least 80% of the amount expended for research and development expenditure must be spent inside Russia.  General working capital can include acquisition of other businesses or portions thereof to be owned by the Russian subsidiary.
	The purchaser of the common stock has non-transferable veto rights over the Company’s Russian subsidiary’s annual budget during the investment period and must approve non-cash asset transfers to be made in satisfaction of the Investment Obligation.  Spending and/or commitments to spend for general working capital and research and development do not require approval by the purchaser. There are no legal restrictions on the specific usage of the $39.8 million received in the private placement transaction or on withdrawal from the Company’s bank accounts for use in general corporate purposes.
	The Company is required to satisfy the Investment Obligation by July 31, 2014 or, in the event the Company has not recorded aggregate revenue from sales of its products in the Russian Federation of at least $26.8 million during the period beginning July 1, 2012 and ending June 30, 2014, then will be automatically extended from July 31, 2014 to March 31, 2015. The Company expects the date for achievement of the Investment Obligation will be extended to March 31, 2015. Therefore, the Company intends to meet its Investment Obligation by March 31, 2015.  If the Company fails to meet the Investment Obligation by the deadline, including failure to meet the Investment Obligation because the purchaser of the common stock does not approve the transfer of non-cash assets, the Company will be required to pay a $5.0 million penalty (the ‘Penalty Payment’) as the sole and exclusive remedy for damages and monetary relief available to the purchaser for failure to meet the Investment Obligation.
	The Company has accounted for the $5.0 million Penalty Payment as an embedded derivative instrument, with the underlying being the performance or nonperformance of meeting the Investment Obligation by the extended deadline of March 31, 2015 and has classified $4.9 million of the $5.0 million as additional paid-in capital and the remaining $0.1 million, representing the estimated fair value of the Penalty Payment derivative, as other noncurrent liabilities.
	The fair value of the Penalty Payment derivative has been estimated at the date of the original common stock sale (April 27, 2012) and at each subsequent balance sheet date using a probability-weighted discounted future cash flow approach using unobservable inputs, which are classified as Level 3 within the fair value hierarchy. The primary inputs for this approach include the probability of achieving the Investment Obligation and a discount rate that approximates the Company’s incremental borrowing rate. After the initial measurement, changes in the fair value of this derivative were recorded in other income (expense). The change in fair value of the Penalty Payment derivative from April 27, 2012 to December 31, 2012 and to June 30, 2013 was not significant.
	Accumulated Deficit
	Approximately $6.3 million of the Company’s accumulated deficit at December 31, 2012 was subject to restriction due to the fact that the Company’s subsidiaries in China are required to set aside at least 10% of their respective accumulated profits each year to fund statutory common reserves as well as allocate a discretional portion of their after-tax profits to their staff welfare and bonus fund.
	Equity Incentive Programs
	The Company grants stock options, restricted stock units, stock appreciation units and stock purchase rights pursuant to stockholder and board approved equity incentive plans.
	In December 2012, the board of the Company approved to increase 1,500,000 shares available for issuance to provide performance-based equity awards to key employees which was approved by our Stockholders at our Annual Meeting on June 11, 2013. The Compensation Committee had approved an aggregate of 1,325,000 shares of common stock that were granted on December 12, 2012 which were subject to forfeiture if the proposed amendment to the 2010 Plan was not approved by our stockholders within 12 months of the grant date.
	Stock options and restricted stock units
	The following table summarizes the Company’s stock option activity during the six months ended June 30, 2013:
					Stock Options					Restricted Stock Units
		Shares			Number			Weighted		Number			Weighted
		available for			of			average		of			average
		grant			shares			exercise		units			grant date
								price					fair value
	Balance at December 31, 2012		382,668			2,773,887		$	5.87		924,823		$	5.84
	Authorized for issuance		2,569,115			—			—		—			—
	Granted		(1,195,170	)		1,164,130			5.2		31,040			7.16
	Exercised/Converted		—			(120,697	)		4.74		(54,634	)		5.8
	Forfeited		81,424			(36,975	)		8.75		(48,100	)		5.9
	Balance at June 30, 2013		1,838,037			3,780,345		$	5.67		853,129		$	5.87
	The following table summarizes information about stock options outstanding as of June 30, 2013:
		Options Outstanding
		Number			Weighted			Weighted		Aggregate
		of			average			average		intrinsic value
		shares			exercise			remaining		(in thousands)
					price			contractual
								term
								(years)
	Vested and expected to vest		3,289,893		$	5.74			6.87	$	10,682
	Exercisable		1,885,353		$	5.74			5.39	$	6,380
	The aggregate intrinsic value of options vested and expected to vest and exercisable as of June 30, 2013 is calculated based on the difference between the exercise price of in-the-money options and the closing price of the Company’s common stock as of June 30, 2013 that would have been received by the option holders if all-in-the-money options had been exercised. The intrinsic value of options exercised during the three months ended June 30, 2013 and 2012 was $236,000 and $26,000, respectively. The intrinsic value of options exercised during the six months ended June 30, 2013 and 2012 was $253,000 and $40,000, respectively.
	The following table summarizes information about restricted stock units outstanding as of June 30, 2013:
		Restricted Stock Units Outstanding
		Number			Weighted			Weighted		Aggregate
		of			average grant			average		intrinsic value
		shares			date fair			remaining		(in thousands)
					value			contractual
								term
								(years)
	Vested and expected to vest		799,382		$	5.87			0.91	$	6,947
	The aggregate intrinsic value of restricted stock units vested and expected to vest as of June 30, 2013 is calculated based on the fair value of the Company’s common stock as of June 30, 2013. The intrinsic value of restricted stock units converted during the three months ended June 30, 2013 and 2012 was $26,000 and 0, respectively. The intrinsic value of restricted stock units converted during the six months ended June 30, 2013 and 2012 was $475,000 and 0, respectively.
	Stock appreciation units
	The following table summarizes the Company’s stock appreciation unit activity during the six months ended June 30, 2013:
		Stock			Weighted
		Appreciation			average
		Units			exercise
					price
	Stock appreciation units outstanding as of December 31, 2012		212,534		$	7.07
	Stock appreciation units granted		250,000			5.11
Stock appreciation units cancelled		(14,244	)		8.28
Stock appreciation units exercised		(5,746	)		4.42
Stock appreciation units outstanding as of June 30, 2013		442,544		$	5.96
The following table summarizes information about stock appreciation units outstanding as of June 30, 2013:
	Stock Appreciation Units Outstanding
	Number			Weighted			Weighted		Aggregate
	of			average			average		intrinsic  value
	units			exercise			remaining		(in thousands)
				price			contractual
							term
							(years)
Vested and expected to vest		337,924		$	6.22			7.43	$	1,033
Exercisable		173,824		$	6.81			5.78	$	496
The aggregate intrinsic value of stock appreciation units vested and expected to vest and exercisable as of June 30, 2013 is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of June 30, 2013. The intrinsic value of stock appreciation units exercised during the three months ended June 30, 2013 and 2012 was $17,000 and $1,000, respectively. The intrinsic value of stock appreciation units exercised during the six months ended June 30, 2013 and 2012 was $18,000 and $10,000, respectively.

Stockbased_Compensation

Stock-based Compensation	6 Months Ended
	Jun. 30, 2013
Stock-based Compensation	'
	Note 12. Stock-based compensation
	Stock-based compensation expense
	The Company’s total stock-based compensation expense was recorded as follows (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June 30,
	(in thousands)	2013				2012				2013				2012
	Cost of goods sold	$	131			$	136			$	374			$	324
	Research and development		600				395				1,018				864
	Sales and marketing		344				205				582				414
	General and administrative		398				273				701				551
		$	1,473			$	1,009			$	2,675			$	2,153
	Stock options
	The following tables summarize the components of stock-based compensation expense for stock options for the three and six months ended June 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June 30,
		2013				2012				2013				2012
	Cost of goods sold	$	65			$	53			$	144			$	114
	Research and development		175				211				349				420
	Sales and marketing		135				90				213				184
	General and administrative		205				175				378				349
		$	580			$	529			$	1,084			$	1,067
	The weighted-average fair value of options granted was $3.96 and $2.89 per share for the three months ended June 30, 2013 and 2012, respectively. The weighted-average fair value of options granted was $3.93 and $3.20 per share for the six months ended June 30, 2013 and 2012, respectively. At June 30, 2013, there was $6.5 million of unrecognized stock-based compensation expense that will be recognized over the remaining weighted-average period of 4.6 years.
	The Company estimated the fair value of employee stock options using a Black-Scholes valuation model with the following assumptions:
			Three Months Ended								Six Months Ended
			June 30,								June 30,
	Stock Options		2013				2012				2013				2012
	Weighted-average expected term (years)			6.3				6.77				6.34				6.76
	Weighted-average volatility			75	%			71	%			75	%			71	%
	Risk-free interest rate			1.12-1.14	%			1.52-1.83	%			1.08-1.14	%			1.35-1.83	%
	Expected dividends			0	%			0	%			0	%			0	%
	Expected term. The expected term was estimated using the Company’s historical and expected future exercise behavior.
	Volatility. Due to the limited history of the trading of the Company’s common stock since the initial public offering in February 2011, the expected volatility used by the Company is based on the actual volatility of similar entities. In evaluating similarity, factors such as industry, stage of life cycle, size, and financial leverage are taken into consideration. The term over which volatility was measured was commensurate with the expected term.
	Risk-free interest rate. The risk-free rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.
	Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.
	The Company is required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and record stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods.
	On December 12, 2012, the Company granted 1,060,000 shares of stock options to key employees subject to an increase in the shares available to be granted which was approved by our stockholders at our Annual Meeting on June 11, 2013. These shares will vest during the term if the average closing price of the Company’s common stock over a period of 20 consecutive trading days is equal to or greater than $15.00 per share and recipient remains in continuous service with the Company through such period, or fully accelerate and vest on the seventh anniversary of the grant date. The Company determined that the grant date for these performance options was June 11, 2013 for accounting purposes. The Company estimated the fair value of performance shares of $5.97 for the three months ended June 30, 2013 using a Monte Carlo simulation model on the date of grant with the assumptions discussed above. The Company recorded $28,000 of compensation expense for these options in the second quarter of 2013.
	Stock appreciation units
	Stock appreciation units are remeasured each period at fair value. The following table summarizes the expense (credit) recognized for stock appreciation units for the three and six months ended June 30, 2013 (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June  30,
		2013				2012				2013				2012
	Cost of goods sold	$	(63	)		$	(35	)		$	(87	)		$	(40	)
	Research and development		147				1				115				(8	)
	Sales and marketing		47				(6	)			34				(10	)
	General and administrative		63				2				54				(1	)
		$	194			$	(38	)		$	116			$	(59	)
	As of June 30, 2013 and December 31, 2012, the liabilities for the settlement of the stock appreciation units were $0.7 million and $0.4 million, respectively and were included in accrued and other current liabilities on the condensed consolidated balance sheet.
	Based on the fair value of the stock appreciation units as of June 30, 2013, the Company had $0.1 million of unrecognized stock-based compensation expense that would be recognized over the remaining weighted-average period of 0.9 years. The Company estimated the fair value of all employee stock appreciation units using a Black-Scholes valuation model with the following assumptions:
			Three Months Ended								Six Months Ended
			June 30,								June 30,
	Stock Appreciation Units		2013				2012				2013				2012
	Weighted-average expected term (years)			2.33				3.34				2.47				3.35
	Weighted-average volatility			57	%			68	%			60	%			69	%
	Risk-free interest rate			0.19-0.30	%			0.37-0.64	%			0.19-0.46	%			0.37-1.04	%
	Expected dividends			0	%			0	%			0	%			0	%
	Expected term. Vested stock appreciation units first become exercisable upon the expiration of the lock-up period associated with the initial public offering. Therefore, the Company estimated the term of the award based on an average of the weighted-average exercise period and the remaining contractual term.
	Volatility. Due to the limited history of the trading of the Company’s common stock since the initial public offering in February 2011, the expected volatility used by the Company is based on the actual volatility of similar entities. In evaluating similarity, factors such as industry, stage of life cycle, size, and financial leverage are taken into consideration. The term over which volatility was measured was commensurate with the expected term.
	Risk-free interest rate. The risk-free rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.
	Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.
	The Company granted 250,000 shares of stock appreciation units to key employees on June 11, 2013. These shares will vest during the term of the average closing price of the Company’s common stock over a period of 20 consecutive trading days is equal to or greater than $15.00 per share and recipient remains in Continuous Service with the Company through such period, or fully accelerate and vest on the seventh anniversary of the grant date. The Company estimated the fair value of performance shares of $6.47 for the three months ended June 30, 2013 using a Monte Carlo simulation model on the date of grant with the assumptions discussed above. The Company recorded $13,000 of compensation expense for these stock appreciation units in the second quarter of 2013.
	Employee stock purchase plan (“ESPP”)
	The following tables summarize the components of ESPP expense for the three and six months ended June 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended								Six Months Ended
June  30,						June  30,
	2013				2012				2013				2012
Cost of goods sold	$	75			$	54			$	155			$	121
Research and development		100				77				220				253
Sales and marketing		34				25				72				65
General and administrative		24				20				64				57
	$	233			$	176			$	511			$	496
As of June 30, 2013 there was $0.2 million of unrecognized stock-based compensation expense for stock purchase rights that will be recognized over the remaining offering period, through November 2013.
The value of the stock purchase right consists of: (1) the 15% discount on the purchase of the stock, (2) 85% of the call option and (3) 15% of the put option. The call option and put option were valued using the Black-Scholes option pricing model with the following assumptions:
		Three months ended								Six months ended
		June 30,								June 30,
Stock Purchase Rights		2013				2012				2013				2012
Weighted-average expected term (years)			0.73				0.75				0.73				0.75
Weighted-average volatility			48	%			71	%			48	%			71	%
Risk-free interest rate			0.09-0.16	%			0.04-0.15	%			0.09-0.16	%			0.04-0.15	%
Expected dividends			0	%			0	%			0	%			0	%
Expected term. The expected term represents the period of time from the beginning of the offering period to the purchase date.
Volatility. Due to the limited history of the trading of the Company’s common stock since the initial public offering in February 2011, the expected volatility used by the Company is based on the actual volatility of similar entities. In evaluating similarity, factors such as industry, stage of life cycle, size, and financial leverage are taken into consideration. The term over which volatility was measured was commensurate with the expected term.
Risk-free interest rate. The risk-free rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.
Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.
Restricted stock units
The following table summarizes the stock-based compensation expense recognized for restricted stock units for the three and six months ended June 30, 2013 (in thousands):
	Three Months Ended								Six Months Ended
	June  30,								June  30,
	2013				2012				2013				2012
Cost of goods sold	$	54			$	64			$	162			$	129
Research and development		178				106				334				199
Sales and marketing		128				96				263				175
General and administrative		106				76				205				146
	$	466			$	342			$	964			$	649
The weighted-average fair value of restricted stock units granted was $8.09 and $4.50 per share for the three months ended June 30, 2013 and 2012, respectively. The weighted-average fair value of restricted stock units granted was $7.16 and $5.99 per share for the six months ended June 30, 2013 and 2012, respectively. At June 30, 2013, the Company has $3.0 million of unrecognized stock-based compensation expense that will be recognized over the remaining weighted-average period of 1.7 years.

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2013
Income Taxes	'
	Note 13. Income taxes
	The Company’s income tax expense for the three and six months ended June 30, 2013 is primarily related to income taxes of the Company’s non-U.S. operations. The Company recorded an income tax benefit of $0.1 million and an income tax provision of $0.1 million for the three and six months ended June 30, 2013, as compared to an income tax provision of $0.4 million and $0.3 million for the three and six months ended June 30, 2012, respectively.
		Three Months Ended					Six Months Ended
		June  30,					June  30,
	(in thousands)	2013		2012			2013			2012
	Benefit (provision) for income taxes	$	90	$	(377	)	$	(93	)	$	(317	)
	The Company’s income tax benefit for the three months ended June 30, 2013, was primarily due to a decrease in the year-to-date pretax book income related to the Company’s non-US operations. The Company’s income tax expense for the six months ended June 30, 2013 and for the three and six months ended June 30, 2012 was primarily related to income taxes of the Company’s non-U.S. operations.
	The Company conducts its business globally and operating income is subject to varying rates of tax in the United States, China and Japan. Consequently, the Company’s effective tax rate is dependent upon the geographic distribution of earnings or losses and the tax laws and regulations in each geographical region. The Company expects that its income taxes will vary in relation to the Company’s profitability and the geographic distribution of its profits. Historically, the Company has experienced net losses in the United States and in the short term, the Company expects this trend to continue. One of the Company’s subsidiaries in China generates a cash tax liability. The subsidiary has qualified for a preferential 15% tax rate available for high technology enterprises as opposed to the statutory 25% tax rate.
	Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the carrying amounts of existing assets and liabilities in the financial statements and their respective tax bases using tax rates expected to be in effect during the years in which the basis differences reverse.
	Due to historic losses in the U.S., the Company has a full valuation allowance on the U.S. federal and state deferred tax assets. The Company also maintained a full valuation allowance for the deferred tax assets of the Company’s NeoPhotonics Semiconductor subsidiary as it was determined that the deferred tax assets are not more likely than not to be realized. Management continues to evaluate the realizability of deferred tax assets and the related valuation allowance. If management's assessment of the deferred tax assets or the corresponding valuation allowance were to change, the Company would record the related adjustment to income during the period in which management makes the determination.
	As of June 30, 2013, there were no material changes to either the nature or the amounts of the uncertain tax positions previously determined for the year ended December 31, 2012.

Pension

Pension	6 Months Ended
	Jun. 30, 2013
Pension	'
	Note 14. Pension
	Japan Defined Benefit Plans
	In connection with the Company’s acquisition of NeoPhotonics Semiconductor on March 29, 2013, the Company assumed funding responsibility for two defined benefit plans held and administered by Lapis that provide retirement benefits to its employees in Japan. Under the defined benefit plans in Japan, the Company calculates benefits based on an employee’s individual grade level, years of service and performance. Employees are entitled to a lump sum benefit upon retirement or upon certain instances of termination. Partially offsetting this liability is a $1.9 million receivable equal to the value of the plan assets that will be transferred by LAPIS once NeoPhotonics Semiconductor establishes its own pension plan. As of June 30, 2013 the Company recorded $8.1 million for total pension liabilities. Including the $1.9 million receivable due from LAPIS, the net pension liability was $6.2 million with anticipated outflows as follows (in thousands):
	2013 (remaining 6 months)	$	102
	2014		401
	2015		193
	2016		626
	2017		843
	Thereafter		3,989
		$	6,154
	The net periodic pension costs totaled $97,000 for the three month and six month periods ended June 30, 2013. Net periodic pension costs for the three month and six month periods ended June 30, 2013 included the following (in thousands):
			Three Months Ended June 30,					Six Months Ended June 30,
			2013			2012		2013			2012
	Service costs		$	88		$	—	$	88		$	—
	Interest cost			20			—		20			—
	Expected return on plan assets			(11	)		—		(11	)		—
	Net periodic pension costs		$	97		$	—	$	97		$	—
	For the period March 29, 2013 through December 31, 2013, the Company expected to contribute $624,000 to the benefit plans. As of June 30, 2013 the Company had paid $139,000 with the balance to be paid by December 31, 2013.
	Per the terms of the Demerger Agreement with LAPIS, the Company has up to one year to establish a new pension plan (“New Pension Plan”) for its employees in Japan. Until the New Pension Plan is established, the value of the plan assets will remain in plans administered by LAPIS and LAPIS has an obligation to transfer the value of these assets to the New Pension Plan.

Restructuring_Charges

Restructuring Charges	6 Months Ended
	Jun. 30, 2013
Restructuring Charges	'
	Note 15. Restructuring Charges
	In the first quarter of 2013, the Company exited and closed one facility at its headquarters location to align its facilities usage with its current size. As a result, the Company recorded a restructuring charge related to the facility impairment of approximately $0.3 million. As of June 30, 2013, the remaining balance of this restructuring obligation was $0.3 million, which the Company expects to pay through 2015.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2013
Consolidation	'
	Consolidation
	The condensed consolidated financial statements are prepared in accordance with U.S. GAAP and include the consolidated accounts of the Company and its majority owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported revenue and expenses during the reporting period. Significant estimates made by management include: the fair values of identifiable assets acquired and liabilities assumed in business combinations; the useful lives of property, plant and equipment and intangible assets as well as future cash flows to be generated by those assets; allowances for doubtful accounts; valuation allowances for deferred tax assets; write off of excess and obsolete inventories and the valuations of stock-based compensation, among others. Actual results could differ from these estimates.
Business Combinations-Acquisition Accounting	'
	Business Combinations—Acquisition Accounting
	Under the acquisition method of accounting, the Company allocates the purchase price of acquired companies to the tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The Company records the excess of purchase price over the aggregate fair values of the tangible and identifiable intangible assets as goodwill. The Company determines the fair values of assets acquired and liabilities assumed. To establish fair value, the Company measures the price that would be received to sell an asset or paid to transfer a liability in an ordinary transaction between market participants. The measurement assumes the highest and best use of the asset by the market participants that would maximize the value of the asset or the group of assets within which the asset would be used at the measurement date, even if the intended use of the asset is different.
	The Company estimates the economic lives of certain acquired assets and these lives are used to calculate depreciation and amortization expenses. The Company estimates the future cash flows to be derived from such assets, and these estimates are used to determine the fair value of the assets. If any of these estimates change, depreciation or amortization expenses could be changed and/or the value of our intangible assets could be impaired.
	Acquisition related costs, including real estate transaction taxes, finder’s fees, advisory, legal, accounting, valuation and other professional or consulting fees are accounted for as expenses in the periods in which the costs are incurred or the services are received.
Recent Accounting Pronouncements	'
	Recent accounting pronouncements
	In February 2013, the Financial Accounting Standard Board (“FASB”) issued amendments to the FASB Accounting Standard Codification to improve the reporting of reclassifications out of accumulated other comprehensive income. The amendments require new disclosures for items reclassified out of accumulated other comprehensive income (“AOCI”), including (1) changes in AOCI balances by component and (2) significant items reclassified out of AOCI. The guidance does not amend any existing requirements for reporting net income or OCI in the financial statements. As this guidance only requires expanded disclosures, the adoption of this guidance did not have a material effect on the Company’s consolidated financial statements.
	In March 2013, the FASB issued amendments to the FASB Accounting Standard Codification, which indicates that the entire amount of a cumulative translation adjustment related to an entity’s investment in a foreign entity should be released when there has been a (i) sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity, (ii) loss of a controlling financial interest in an investment in a foreign entity, or (iii) step acquisition for a foreign entity. The amendments are effective prospectively for fiscal years beginning after December 15, 2013. Early adoption is permitted. The adoption of this guidance is not expected to have a material impact to the Company’s consolidated financial statements.
	In July 2013, the FASB issued amendments to the FSAB Accounting Standard Codification on Income Taxes, to improve the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This guidance is expected to reduce diversity in practice and is expected to better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exists. This guidance is effective for reporting periods beginning after December 15, 2013. The adoption of this guidance is not expected to have a material impact to the Company’s consolidated financial statements.
Cash and Cash Equivalents and Short-term Investments	'
	The Company may sell its security investments in the future to fund future operation needs. As a result, the Company recorded all its marketable securities in short-term investment as of June 30, 2013 and December 31, 2012, regardless of the contractual maturity date of the securities.
	Realized gains and losses on the sale of marketable securities during the three and six months ended June 30, 2013 and 2012 were immaterial. The Company did not recognize any impairment losses on its marketable securities during the three and six months ended June 30, 2013 and 2012. As of June 30, 2013, the Company did not have any investments in marketable securities that were in an unrealized loss position for a period in excess of 12 months.
Earnings Per Share, Policy	'
	Shares of common stock subject to repurchase resulting from the early exercise of employee stock options are not considered participating securities and are therefore excluded from the basic weighted average common shares outstanding.
Business Combination Policy	'
	Assets Acquired and Liabilities Assumed
	The Company accounted for its acquisition of the NeoPhotonics Semiconductor assets and assumed liabilities as a business combination. NeoPhotonics Semiconductor’s tangible and identifiable intangible assets acquired and liabilities assumed were recorded based upon their estimated fair values as of the closing date of the acquisition. After consideration of the purchase accounting corrections (see Note 2), the estimated fair values of the identifiable assets acquired and liabilities assumed approximated the purchase price; therefore, no goodwill was recorded.
	During the quarter ended September 30, 2013 the Company updated its initial preliminary fair value assessment and has reflected the resulting measurement period adjustments as Revisions in these condensed consolidated financial statements.  These adjustments were based on additional information received subsequent to the Company’s initial assessment that had a significant impact on a number of assumptions, including those related to inventory obsolescence, gross margin and working capital.  The adjustments, net of amortization, included a decrease in the fair value of inventory of $5.9 million and increases in the fair value of property, plant and equipment of $2.8 million and customer relationships of $1.5 million.
	The following table summarizes the acquisition accounting and the tangible and intangible assets acquired as of the date of acquisition and subsequent adjustments (in thousands):
	Total purchase consideration:
	Cash paid through June 30, 2013	$	14,979
	Net receivable from Lapis		(1,851	)
	Notes payable		11,130
		$	24,258
	Liabilities assumed:
	Pension and retirement obligations	$	6,471
	Other compensation-related liabilities		1,083
	Other current liabilities		1,265
		$	8,819
	Fair value of assets acquired:
	Inventory	$	13,309
	Other current assets		35
	Land, property, plant and equipment(1)		14,433
	Intangible assets acquired:
	Developed technology		2,120
	Customer relationships		3,180
		$	33,077
	-1	Includes land of $3.5 million, buildings of $3.9 million and machinery, equipment, furniture and fixtures of $7.0 million.
	The approach for measuring the fair value of the assets acquired and liabilities assumed is described below:
	Net Tangible Assets
	NeoPhotonics Semiconductor’s tangible assets acquired and liabilities assumed as of March 29, 2013 were recorded at estimated fair value with the exception of the pension and retirement obligations. The Company estimated fair value by adjusting NeoPhotonics Semiconductor’s historical value of property, plant and equipment to an estimate of depreciated replacement cost, adjusted for economic obsolescence. The Company depreciates property, plant and equipment over estimated lives of 2 to 10 years, and records the expense to cost of goods sold and operating expense. The fair value of inventory acquired was determined using a net realizable value approach based upon the expected sales value of the inventory, less any costs to complete and selling costs along with a reasonable profit margin based on historical and expected results. The fair value of accrued liabilities approximated the amounts due under the arrangements with employees and vendors due to short maturity. Pensions and retirement obligations are recorded to the extent the projected benefit obligation exceeded the fair value of the plan assets estimated as of March 29, 2013. The projected benefit obligation is measured at the actuarial present value of all benefits attributed by the plan's benefit formula to employee service rendered before March 29, 2013.
	Intangible Assets
	Developed technology represents products that have reached technological feasibility. NeoPhotonics Semiconductor’s current product offerings include high speed semiconductor and high speed laser and photodetector devices for communication networks. The fair value of developed technology intangibles acquired was determined by using a royalty-avoidance method. The share of future revenue relating to current technology was forecasted, using an estimate for obsolescence such that the share declines over time. A royalty rate of two percent was used to calculate royalty savings on that revenue that are avoided since the Company owns the technology and does not need to license it from other parties. The after-tax royalty savings was then discounted to present value using the Company’s discount rate. The Company amortizes the developed technology intangible assets over estimated lives of 4 to 5 years, and amortization expense is recorded to cost of goods sold.
	The customer relationships asset represents the value of the ability to sell existing, in-process, and future versions of the technology to the NeoPhotonics Semiconductor existing customer base. The Company utilized the excess earnings method, estimating future cash flows that will result from existing customers given assumed retention rates, and then discounting those flows to their present value using the Company’s discount rate. The Company amortizes the customer relationships intangible asset over an average estimated life of 6 years, and amortization expense is recorded to operating expenses.
	The weighted average amortization period for the total amount of intangible assets acquired is 5.4 years.
Standard Product Warranty, Policy	'
	Warranty Accrual
	The Company provides warranties to cover defects in workmanship, materials and manufacturing for a period of one to two years to meet the stated functionality as agreed to in each sales arrangement. Products are tested against specified functionality requirements prior to delivery, but the Company nevertheless from time to time experiences claims under its warranty guarantees. The Company accrues for estimated warranty costs under those guarantees based upon historical experience, and for specific items, at the time their existence is known and the amounts are determinable.
Share-based Compensation, Option and Incentive Plans Policy	'
	The Company estimated the fair value of employee stock options using a Black-Scholes valuation model with the following assumptions:
			Three Months Ended								Six Months Ended
			June 30,								June 30,
	Stock Options		2013				2012				2013				2012
	Weighted-average expected term (years)			6.3				6.77				6.34				6.76
	Weighted-average volatility			75	%			71	%			75	%			71	%
	Risk-free interest rate			1.12-1.14	%			1.52-1.83	%			1.08-1.14	%			1.35-1.83	%
	Expected dividends			0	%			0	%			0	%			0	%
	Expected term. The expected term was estimated using the Company’s historical and expected future exercise behavior.
	Volatility. Due to the limited history of the trading of the Company’s common stock since the initial public offering in February 2011, the expected volatility used by the Company is based on the actual volatility of similar entities. In evaluating similarity, factors such as industry, stage of life cycle, size, and financial leverage are taken into consideration. The term over which volatility was measured was commensurate with the expected term.
	Risk-free interest rate. The risk-free rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.
	Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.
	The Company is required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and record stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods.
	On December 12, 2012, the Company granted 1,060,000 shares of stock options to key employees subject to an increase in the shares available to be granted which was approved by our stockholders at our Annual Meeting on June 11, 2013. These shares will vest during the term if the average closing price of the Company’s common stock over a period of 20 consecutive trading days is equal to or greater than $15.00 per share and recipient remains in continuous service with the Company through such period, or fully accelerate and vest on the seventh anniversary of the grant date. The Company determined that the grant date for these performance options was June 11, 2013 for accounting purposes. The Company estimated the fair value of performance shares of $5.97 for the three months ended June 30, 2013 using a Monte Carlo simulation model on the date of grant with the assumptions discussed above. The Company recorded $28,000 of compensation expense for these options in the second quarter of 2013.
	Stock appreciation units
	Stock appreciation units are remeasured each period at fair value. The following table summarizes the expense (credit) recognized for stock appreciation units for the three and six months ended June 30, 2013 (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June  30,
		2013				2012				2013				2012
	Cost of goods sold	$	(63	)		$	(35	)		$	(87	)		$	(40	)
	Research and development		147				1				115				(8	)
	Sales and marketing		47				(6	)			34				(10	)
	General and administrative		63				2				54				(1	)
		$	194			$	(38	)		$	116			$	(59	)
	As of June 30, 2013 and December 31, 2012, the liabilities for the settlement of the stock appreciation units were $0.7 million and $0.4 million, respectively and were included in accrued and other current liabilities on the condensed consolidated balance sheet.
	Based on the fair value of the stock appreciation units as of June 30, 2013, the Company had $0.1 million of unrecognized stock-based compensation expense that would be recognized over the remaining weighted-average period of 0.9 years. The Company estimated the fair value of all employee stock appreciation units using a Black-Scholes valuation model with the following assumptions:
			Three Months Ended								Six Months Ended
			June 30,								June 30,
	Stock Appreciation Units		2013				2012				2013				2012
	Weighted-average expected term (years)			2.33				3.34				2.47				3.35
	Weighted-average volatility			57	%			68	%			60	%			69	%
	Risk-free interest rate			0.19-0.30	%			0.37-0.64	%			0.19-0.46	%			0.37-1.04	%
	Expected dividends			0	%			0	%			0	%			0	%
	Expected term. Vested stock appreciation units first become exercisable upon the expiration of the lock-up period associated with the initial public offering. Therefore, the Company estimated the term of the award based on an average of the weighted-average exercise period and the remaining contractual term.
	Volatility. Due to the limited history of the trading of the Company’s common stock since the initial public offering in February 2011, the expected volatility used by the Company is based on the actual volatility of similar entities. In evaluating similarity, factors such as industry, stage of life cycle, size, and financial leverage are taken into consideration. The term over which volatility was measured was commensurate with the expected term.
	Risk-free interest rate. The risk-free rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.
	Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.
	The Company granted 250,000 shares of stock appreciation units to key employees on June 11, 2013. These shares will vest during the term of the average closing price of the Company’s common stock over a period of 20 consecutive trading days is equal to or greater than $15.00 per share and recipient remains in Continuous Service with the Company through such period, or fully accelerate and vest on the seventh anniversary of the grant date. The Company estimated the fair value of performance shares of $6.47 for the three months ended June 30, 2013 using a Monte Carlo simulation model on the date of grant with the assumptions discussed above. The Company recorded $13,000 of compensation expense for these stock appreciation units in the second quarter of 2013.
	Employee stock purchase plan (“ESPP”)
	The following tables summarize the components of ESPP expense for the three and six months ended June 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June  30,
		2013				2012				2013				2012
	Cost of goods sold	$	75			$	54			$	155			$	121
	Research and development		100				77				220				253
	Sales and marketing		34				25				72				65
	General and administrative		24				20				64				57
		$	233			$	176			$	511			$	496
	As of June 30, 2013 there was $0.2 million of unrecognized stock-based compensation expense for stock purchase rights that will be recognized over the remaining offering period, through November 2013.
	The value of the stock purchase right consists of: (1) the 15% discount on the purchase of the stock, (2) 85% of the call option and (3) 15% of the put option. The call option and put option were valued using the Black-Scholes option pricing model with the following assumptions:
			Three months ended								Six months ended
			June 30,								June 30,
	Stock Purchase Rights		2013				2012				2013				2012
	Weighted-average expected term (years)			0.73				0.75				0.73				0.75
	Weighted-average volatility			48	%			71	%			48	%			71	%
	Risk-free interest rate			0.09-0.16	%			0.04-0.15	%			0.09-0.16	%			0.04-0.15	%
	Expected dividends			0	%			0	%			0	%			0	%
	Expected term. The expected term represents the period of time from the beginning of the offering period to the purchase date.
	Volatility. Due to the limited history of the trading of the Company’s common stock since the initial public offering in February 2011, the expected volatility used by the Company is based on the actual volatility of similar entities. In evaluating similarity, factors such as industry, stage of life cycle, size, and financial leverage are taken into consideration. The term over which volatility was measured was commensurate with the expected term.
	Risk-free interest rate. The risk-free rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term.
	Expected dividends. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.

Restatement_and_Revision_of_Un1

Restatement and Revision of Unaudited Condensed Consolidated Financial Statements (Tables)	6 Months Ended
	Jun. 30, 2013
Restatement and Revision of Unaudited Condensed Consolidated Financial Statements	'
	The effects of the restatement and revisions on the condensed consolidated balance sheet as of June 30, 2013 are summarized in the following table:
		30-Jun-13
		(In thousands, except per share data)
		Previously			Corrections			Penalty			Revision for			Restated and
		Reported						Payment			Measurement			Revised
								Derivative			Period
											Adjustments
	ASSETS
	Current assets:
	Cash and cash equivalents	$	37,857		$	(299	)	$	—		$	—		$	37,558
	Short-term investments		36,874			—			—			—			36,874
	Restricted cash		1,813			—			—			—			1,813
	Accounts receivable, net of allowance for doubtful accounts		72,998			—			—			—			72,998
	Inventories		64,164			(15	)		—			(5,922	)		58,227
	Prepaid expenses and other current assets		6,684			306			—			1,873			8,863
	Total current assets		220,390			(8	)		—			(4,049	)		216,333
	Long-term investments		355			—			—			—			355
	Property, plant and equipment, net		65,886			2,045			—			2,830			70,761
	Goodwill		2,084			(2,084	)		—			—			—
	Other intangible assets, net		15,926			(62	)		—			1,498			17,362
	Other long-term assets		3,586			(2,274	)		—			6			1,318
	Total assets	$	308,227		$	(2,383	)	$	—		$	285		$	306,129
	LIABILITIES, REDEEMABLE COMMON STOCK AND STOCKHOLDERS’ EQUITY
	Current liabilities:
	Accounts payable	$	44,115		$	(221	)	$	—		$	—		$	43,894
	Notes payable		9,041			—			—			—			9,041
	Current portion of long-term debt		10,535			(1,750	)		—			—			8,785
	Accrued and other current liabilities		19,708			811			—			11			20,530
	Total current liabilities		83,399			(1,160	)		—			11			82,250
	Long-term debt, net of current portion		26,320			1,750			—			—			28,070
	Deferred income tax liabilities		664			—			—			—			664
	Other noncurrent liabilities		10,030			(2,293	)		138			7			7,882
	Total liabilities		120,413			(1,703	)		138			18			118,866
	Redeemable common stock		5,000			—			(5,000	)		—			—
	Stockholders’ equity:
	Preferred stock, $0.0025 par value		—			—			—			—			—
	Common stock, $0.0025 par value		77			—			—			—			77
	Additional paid-in capital		438,295			—			4,862			—			443,157
	Accumulated other comprehensive income		12,521			74			—			41			12,636
	Accumulated deficit		(268,079	)		(754	)		—			226			(268,607	)
	Total stockholders’ equity		182,814			(680	)		4,862			267			187,263
	Total liabilities, redeemable common stock and stockholders’ equity	$	308,227		$	(2,383	)	$	—		$	285		$	306,129
	The effects of the restatement and revisions on the condensed consolidated statement of operations for the three months ended June 30, 2013 are summarized in the following table:
		Three Months Ended June 30, 2013
		(In thousands, except share and per share information)
		Previously			Corrections			Revision for			Restated and
		Reported						Measurement			Revised
								Period
								Adjustments
	Revenue	$	74,990		$	—		$	—		$	74,990
	Cost of goods sold		59,805			1			(417	)		59,389
	Gross profit		15,185			(1	)		417			15,601
	Operating expenses:
	Research and development		11,311			(245	)		21			11,087
	Sales and marketing		3,369			(20	)		—			3,349
	General and administrative		8,470			21			79			8,570
	Amortization of purchased intangible assets		362			—			64			426
	Total operating expenses		23,512			(244	)		164			23,432
	Loss from operations		(8,327	)		243			253			(7,831	)
	Interest income		72			—			—			72
	Interest expense		(342	)		—			—			(342	)
	Other expense, net		(273	)		—			—			(273	)
	Total interest and other expense, net		(543	)		—			—			(543	)
Loss before income taxes		(8,870	)		243			253			(8,374	)
Provision for income taxes		(662	)					752			90
Net loss	$	(9,532	)	$	243		$	1,005		$	(8,284	)
Basic and diluted net loss per share:
Net loss	$	(0.31	)							$	(0.27	)
Weighted average shares used to compute basic and diluted net loss per share		30,779,730									30,779,730
The effects of the restatement and revision on the condensed consolidated statement of comprehensive loss for the three months ended June 30, 2013 are summarized in the following table:
	Three Months Ended June 30, 2013
	(In thousands)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Net loss	$	(9,532	)	$	243		$	1,005		$	(8,284	)
Foreign currency translation adjustments		587			61			41			689
Unrealized loss on investments, net of tax of $0		(35	)		—			—			(35	)
Comprehensive loss	$	(8,980	)	$	304		$	1,046		$	(7,630	)
The effects of the restatement and revision on the condensed consolidated statement of operations for the six months ended June 30, 2013 are summarized in the following table:
	Six Months Ended June 30, 2013
	(In thousands, except share and per share information)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Revenue	$	131,053		$	—		$	—		$	131,053
Cost of goods sold		104,138			(26	)		(417	)		103,695
Gross profit		26,915			26			417			27,358
Operating expenses:
Research and development		21,018			(245	)		21			20,794
Sales and marketing		6,955			(20	)		—			6,935
General and administrative		17,340			1,045			79			18,464
Amortization of purchased intangible assets		683			—			64			747
Total operating expenses		45,996			780			164			46,940
Loss from operations		(19,081	)		(754	)		253			(19,582	)
Interest income		203			—			—			203
Interest expense		(505	)		—			—			(505	)
Other expense, net		(547	)		—			—			(547	)
Total interest and other expense, net		(849	)		—			—			(849	)
Loss before income taxes		(19,930	)		(754	)		253			(20,431	)
Provision for income taxes		(66	)		—			(27	)		(93	)
Net loss	$	(19,996	)	$	(754	)	$	226		$	(20,524	)
Basic and diluted net loss per share:
Net loss	$	(0.65	)							$	(0.67	)
Weighted average shares used to compute basic and diluted net loss per share		30,677,449									30,677,449
The effects of the restatement and revision on the condensed consolidated statement of comprehensive loss for the six months ended June 30, 2013 are summarized in the following table:
	Six Months Ended June 30, 2013
	(In thousands)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Net loss	$	(19,996	)	$	(754	)	$	226		$	(20,524	)
Foreign currency translation adjustments		747			73			41			861
Unrealized loss on investments, net of tax of $0		(54	)		—			—			(54	)
Comprehensive loss	$	(19,303	)	$	(681	)	$	267		$	(19,717	)
The effects of the restatement and revisions on the condensed consolidated statement of cash flows for the six months ended June 30, 2013 are summarized in the following table:
	Six Months Ended June 30, 2013
	(In thousands)
	Previously			Corrections			Revision for			Restated and
	Reported						Measurement			Revised
							Period
							Adjustments
Cash flows from operating activities
Net loss	$	(19,996	)	$	(754	)	$	226		$	(20,524	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		9,769			(546	)		289			9,512
Stock-based compensation expense		2,675			—			—			2,675
Deferred taxes		(6	)		—			—			(6	)
Amortization of premiums and discounts on investments		669			—			—			669
Allowance for doubtful accounts		(144	)		—			—			(144	)
Write-down of inventories		831			—			18			849
Others		471			—			(6	)		465
Change in assets and liabilities, net of effects of acquisitions:
Accounts receivable		(1,766	)		—			—			(1,766	)
Inventories		(838	)		(187	)		(552	)		(1,577	)
Prepaid expenses and other current assets		(48	)		97			(2	)		47
Accounts payable		4,346			(2,038	)		—			2,308
Acquisition-related transaction costs		2,524			758			—			3,282
Accrued and other liabilities		(2,590	)		2,667			27			104
Net cash used in operating activities		(4,103	)		(3	)		—			(4,106	)
Cash flows from investing activities
Purchase of property, plant and equipment		(10,300	)		(245	)		—			(10,545	)
Proceeds from disposition of property, plant and equipment		92			—			—			92
Purchase of marketable securities		(48,771	)		—			—			(48,771	)
Proceeds from sale of marketable securities		35,247			—			—			35,247
Proceeds from maturity of securities		40,255			—			—			40,255
Decrease in restricted cash		859			—			—			859
Acquisition, net of cash acquired		(14,928	)		(51	)		—			(14,979	)
Net cash provided by (used in) investing activities		2,454			(296	)		—			2,158
Cash flows from financing activities
Proceeds from exercise of stock options		572			—			—			572
Proceeds from issuance of stock under ESPP		1,162			—			—			1,162
Proceeds from bank loans		40,000			(13,557	)		—			26,443
Repayment of bank loans		(35,917	)		13,557			—			(22,360	)
Proceeds from issuance of notes payable		9,471			—			—			9,471
Repayment of notes payable		(12,661	)		—			—			(12,661	)
Net cash provided by financing activities		2,627			—			—			2,627
Effect of exchange rates on cash and cash equivalents		(61	)		—			—			(61	)
Net increase (decrease) in cash and cash equivalents		917			(299	)		—			618
Cash and cash equivalents at the beginning of the period		36,940			—			—			36,940
Cash and cash equivalents at the end of the period	$	37,857		$	(299	)	$	—		$	37,558
Effect of Reclassification on Balance Sheet	'
	As further described in Note 11, the Company may be required to pay a $5.0 million penalty if it does not achieve certain performance obligations agreed to in connection with the sale of its common stock in a private placement transaction on April 27, 2012.  The penalty payment was originally classified outside of equity as redeemable common stock at December 31, 2012 and June 30, 2013 since, while the Company intends to meet its performance obligations, it determined the ability to satisfy some of the obligations may be outside of the Company’s control.  The Company has since determined that the $5.0 million penalty payment is an embedded derivative instrument, with the underlying being the performance or nonperformance of meeting its performance obligations by the deadline, and has thus classified $4.9 million of the $5.0 million to additional paid-in capital and the remaining $0.1 million, representing the estimated fair value of the penalty payment derivative, to other noncurrent liabilities at June 30, 2013 and December 31, 2012.  The effect on the Company’s balance sheet at December 31, 2012 for this matter was as follows:
			31-Dec-12
	(in thousands)		Previously			As Revised
			Reported
	Other noncurrent liabilities		$	1,724		$	1,862
	Redeemable common stock			5,000			—
	Additional paid-in capital			433,996			438,858

Discontinued_Operations_Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2013
Revenue and Components of Net Income Related to Discontinued Operations	'
	The results of operations associated with Broadband are presented as discontinued operations in the Company’s consolidated statements of operations for the three and six months ended June 30, 2013 and 2012. Revenue and the components of net income related to the discontinued operations for all periods were as follows (in thousands):
		Three Months Ended				Six Months Ended
		June  30,				June  30,
		2013		2012		2013		2012
	Revenue	$	—	$	—	$	—	$	590
	Income from discontinued operations before income taxes		—		—		—		284
	Provision for income taxes		—		—		—		(114	)
	Income from discontinued operations	$	—	$	—	$	—	$	170

Cash_Equivalents_and_Investmen1

Cash Equivalents and Investments (Tables)	6 Months Ended
	Jun. 30, 2013
Summary of Unrealized Gains and Losses Related to Cash Equivalents and Investments in Marketable Securities	'
	Cash equivalents and investments
	The following table summarizes the Company’s unrealized gains and losses related to the cash equivalents and investments in marketable securities designated as available-for-sale (in thousands):
			As of June 30, 2013										As of December 31, 2012
			Amortized		Gross		Gross			Fair			Amortized		Gross		Gross			Fair
			Cost		Unrealized		Unrealized			Value			Cost		Unrealized		Unrealized			Value
					Gains		Losses								Gains		Losses
	Cash and cash equivalents
	Money market funds		$	11	$	—	$	—		$	11		$	11	$	—	$	—		$	11
	Short-term investments
	Money market funds			13,098		—		—			13,098			7,259		—		—			7,259
	Corporate bonds			13,657		20		(3	)		13,674			23,151		43		(1	)		23,193
	U.S. federal agencies			3,060		1		—			3,061			27,241		10		—			27,251
	Foreign bonds and notes			5,245		5		(10	)		5,240			4,682		14		—			4,696
	Municipal obligations			1,801		—		—			1,801			1,902		—		—			1,902
	Total investments in short-term investments			36,861		26		(13	)		36,874			64,235		67		(1	)		64,301
	Total investments		$	36,872	$	26	$	(13	)	$	36,885	(1)	$	64,246	$	67	$	(1	)	$	64,312	(1)
	-1	Interest income receivable included in total investments balance was $0.2 million and $0.4 million at June 30, 2013 and December 31, 2012, respectively.
Short Term Investments	'
	As of June 30, 2013 and December 31, 2012, maturities of short-term investments are as follows (in thousands):
			June 30,		December 31,
			2013		2012
	Less than 1 year		$	33,090	$	51,861
	Due in 1 to 2 years			—		10,550
	Due in 2 to 5 years			1,994		—
	Due after 5 years			1,801		1,901
	Total		$	36,885	$	64,312
Fair Value of Financial Assets	'
	The following table sets forth the fair value of the Company’s financial assets as of the dates presented (in thousands):
			As of June 30, 2013										As of December 31, 2012
			Level 1		Level 2		Level 3			Total			Level 1		Level 2		Level 3			Total
	Money market funds		$	13,109	$	—	$	—		$	13,109		$	7,270	$	—	$	—		$	7,270
	Marketable securities
	Corporate bonds			—		13,674		—			13,674			—		23,193		—			23,193
	U.S. federal agencies			—		3,061		—			3,061			—		27,251		—			27,251
	Foreign bonds and notes			—		5,240		—			5,240			—		4,696		—			4,696
	Municipal obligations			—		1,801		—			1,801			—		1,902		—			1,902
			$	13,109	$	23,776	$	—		$	36,885		$	7,270	$	57,042	$	—		$	64,312
Fair Value of Financial Liabilities	'
	The following table sets forth the fair value of the Company’s financial liabilities as of the dates presented (in thousands):
			As of June 30, 2013										As of December 31, 2012
			Level 1		Level 2		Level 3			Total			Level 1		Level 2		Level 3			Total
	Contingent consideration (Note 10)		$	—	$	—	$	959		$	959		$	—	$	—	$	959		$	959
	Penalty payment derivative (Note 11)		$	—	$	—	$	138		$	138		$	—	$	—	$	138		$	138

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	6 Months Ended
	Jun. 30, 2013
Computation of Basic and Diluted Net Loss Per Share	'
	The following table sets forth the computation of the basic and diluted net loss per share for the periods indicated (in thousands, except share and per share amounts):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2013			2012			2013			2012
	Numerator:
	Loss from continuing operations	$	(8,284	)	$	(3,656	)	$	(20,524	)	$	(15,434	)
	Income from discontinued operations		—			—			—			170
	Net loss	$	(8,284	)	$	(3,656	)	$	(20,524	)	$	(15,264	)
	Denominator:
	Weighted average shares used to compute basic and diluted net income (loss) per share		30,779,730			28,402,929			30,677,449			26,636,807
	Basic and diluted net income (loss) per share:
	Continuing operations	$	(0.27	)	$	(0.13	)	$	(0.67	)	$	(0.58	)
	Discontinued operations	$	—		$	—		$	—		$	0.01
	Net loss	$	(0.27	)	$	(0.13	)	$	(0.67	)	$	(0.57	)
Potentially Dilutive Securities Excluded From Computation of Diluted Net Loss Per Share Attributable to Common Stockholders	'
	The following potentially dilutive securities were excluded from the computation of diluted net loss per share attributable to NeoPhotonics Corporation common stockholders, as their effect would have been antidilutive:
		June 30,
			2013			2012
	Employee stock options		3,780,345			2,668,630
	Restricted stock units		853,129			648,404
	Employee stock purchase plan		245,091			269,514
	Common stock warrants		4,482			4,482
			4,883,047			3,591,030

Business_Combination_Tables

Business Combination (Tables)	6 Months Ended
	Jun. 30, 2013
Summary of Purchase Accounting and Tangible and Intangible Assets Acquired	'
	The following table summarizes the acquisition accounting and the tangible and intangible assets acquired as of the date of acquisition and subsequent adjustments (in thousands):
	Total purchase consideration:
	Cash paid through June 30, 2013	$	14,979
	Net receivable from Lapis		(1,851	)
	Notes payable		11,130
		$	24,258
	Liabilities assumed:
	Pension and retirement obligations	$	6,471
	Other compensation-related liabilities		1,083
	Other current liabilities		1,265
		$	8,819
	Fair value of assets acquired:
	Inventory	$	13,309
	Other current assets		35
	Land, property, plant and equipment(1)		14,433
	Intangible assets acquired:
	Developed technology		2,120
	Customer relationships		3,180
		$	33,077
	-1	Includes land of $3.5 million, buildings of $3.9 million and machinery, equipment, furniture and fixtures of $7.0 million.
Pro forma Information for Business Acquisition	'
	The unaudited pro forma results do not assume any operating efficiencies as a result of the consolidation of operations (in thousands, except per share data):
		Three months ended						Six months ended
		June 30,						June 30,
		2013			2012			2013			2012
	Revenue	$	74,990		$	78,805		$	143,744		$	146,342
	Net loss	$	(5,519	)	$	(2,283	)	$	(10,796	)	$	(14,321	)
	Basic and diluted net loss per share	$	(0.18	)	$	(0.08	)	$	(0.35	)	$	(0.54	)

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	6 Months Ended
	Jun. 30, 2013
Accounts Receivable, Net	'
	Accounts receivable, net consists of the following (in thousands):
			June 30,			December 31,
			2013			2012
	Accounts receivable		$	68,265		$	66,338
	Trade notes receivable			5,457			4,979
	Allowance for doubtful accounts			(724	)		(963	)
			$	72,998		$	70,354
Inventories	'
	Inventories consist of the following (in thousands):
			June 30,			December 31,
			2013			2012
	Raw materials		$	22,532		$	20,520
	Work in process			19,350			8,603
	Finished goods (1)			16,345			14,670
			$	58,227		$	43,793
	-1	Finished goods inventory at offsite managed inventory locations was $4.4 million and $4.5 million as of June 30, 2013 and December 31, 2012, respectively.
Purchased Intangible Assets	'
	Purchased intangible assets consist of the following (in thousands):
			June 30, 2013									December 31, 2012
			Gross			Accumulated			Net			Gross			Accumulated			Net
			Assets			Amortization			Assets			Assets			Amortization			Assets
	Technology and patents		$	34,456		$	(24,399	)	$	10,057		$	32,176		$	(22,869	)	$	9,307
	Customer relationships			15,083			(8,917	)		6,166			11,898			(8,148	)		3,750
	Leasehold interest			1,386			(247	)		1,139			1,355			(241	)		1,114
	Noncompete agreements			950			(950	)		—			950			(908	)		42
			$	51,875		$	(34,513	)	$	17,362		$	46,379		$	(32,166	)	$	14,213
Amortization Expense of Purchased Intangible Assets	'
	Amortization expense relating to technology and patents and the leasehold interest intangible assets is included within cost of goods sold, and customer relationships and the noncompete agreements within operating expenses. The following table presents details of the amortization expense of the Company’s purchased intangible assets as reported in the condensed consolidated statements of operations (in thousands):
			Three Months Ended						Six Months Ended
			June  30,						June 30,
			2013			2012			2013			2012
	Cost of goods sold		$	772		$	616		$	1,200		$	1,214
	Operating expenses			426			321			747			675
	Total		$	1,198		$	937		$	1,947		$	1,889
Estimated Future Amortization Expense of Purchased Intangible Assets	'
	The estimated future amortization expense of purchased intangible assets as of June 30, 2013, is as follows (in thousands):
	2013 (remaining 6 months)		$	2,169
	2014			4,456
	2015			4,440
	2016			3,694
	2017			841
	Thereafter			1,762
			$	17,362
Accrued Expenses and Other Current Liabilities	'
	Accrued and other current liabilities consist of the following (in thousands):
			June 30,			December 31,
						2012
			2013
	Employee-related		$	9,935		$	12,293
	Other			10,595			7,666
			$	20,530		$	19,959
Other Noncurrent Liabilities	'
	Other noncurrent liabilities consist of the following (in thousands):
			June 30,			December 31,
			2013			2012
	Employee-related		$	6,396		$	188
	Payment penalty derivative (Note 11)			138			138
	Other			1,348			1,536
			$	7,882		$	1,862
Summary of Movement in Warranty Accrual	'
	The table below summarizes the movement in the warranty accrual (in thousands):
			Three Months Ended						Six Months Ended
			June  30,						June 30,
			2013			2012			2013			2012
	Beginning balance		$	1,184		$	1,215		$	1,072		$	1,443
	Warranty accruals			408			134			434			153
	Settlements and adjustments			(131	)		(51	)		(45	)		(298	)
	Ending balance		$	1,461		$	1,298		$	1,461		$	1,298

Debt_Tables

Debt (Tables)	6 Months Ended
	Jun. 30, 2013
Components of Debt, Obligations, Weighted Average Interest Rate and Additional Fair Value Information Relating to Outstanding Debt Instruments	'
	The Company records debt at its carrying amount. The Company uses a market approach to determine fair value, which results in a Level 2 fair value measurement. The following table provides the components of debt, obligations, weighted average interest rate and additional fair value information relating to the Company’s outstanding debt instruments (in thousands, except percentages):
		June 30, 2013							December 31, 2012
		Carrying		Fair		Weighted			Carrying		Fair		Weighted
		Amount		Value		Average			Amount		Value		Average
						Interest							Interest
						Rate							Rate
	Notes payable	$	9,041	$	9,041				$	12,003	$	12,003
	Notes payable related to OCU acquisition		3,535		3,535		1.5	%		—		—
	Short-term debt		5,250		5,250		2.94	%		5,000		4,892		2.2	%
	Total short-term debt	$	8,785	$	8,785				$	5,000	$	4,892
	Long-term notes payable related to OCU acquisition		7,070		7,070		1.5	%		0		0
	Long-term debt		21,000		21,000		2.94	%		17,167		16,336		2.2	%
	Total long-term debt	$	28,070	$	28,070				$	17,167	$	16,336

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2013
Future Minimum Commitments Under All Operating Leases	'
	The Company leases various facilities under noncancelable operating leases. As of June 30, 2013, the future minimum commitments under all operating leases are as follows (in thousands):
	2013 (remaining 6 months)	$	1,161
	2014		1,583
	2015		1,342
	2016		744
	2017		500
	Thereafter		968
		$	6,298

Stockholders_Equity_Tables

Stockholder's Equity (Tables)	6 Months Ended
	Jun. 30, 2013
Reserved Shares of Authorized but Unissued Common Stock	'
	As of June 30, 2013, the Company had reserved the following shares of authorized but unissued common stock:
		Common Stock
	Stock option plans		6,471,511
	Stock purchase plan		594,874
	Warrants		4,482
			7,070,867
Summary of Stock Option and Restricted Stock Unit Activity	'
	The following table summarizes the Company’s stock option activity during the six months ended June 30, 2013:
					Stock Options					Restricted Stock Units
		Shares			Number			Weighted		Number			Weighted
		available for			of			average		of			average
		grant			shares			exercise		units			grant date
								price					fair value
	Balance at December 31, 2012		382,668			2,773,887		$	5.87		924,823		$	5.84
	Authorized for issuance		2,569,115			—			—		—			—
	Granted		(1,195,170	)		1,164,130			5.2		31,040			7.16
	Exercised/Converted		—			(120,697	)		4.74		(54,634	)		5.8
	Forfeited		81,424			(36,975	)		8.75		(48,100	)		5.9
	Balance at June 30, 2013		1,838,037			3,780,345		$	5.67		853,129		$	5.87
Summary of Information about Stock Options Outstanding	'
	The following table summarizes information about stock options outstanding as of June 30, 2013:
		Options Outstanding
		Number			Weighted			Weighted		Aggregate
		of			average			average		intrinsic value
		shares			exercise			remaining		(in thousands)
					price			contractual
								term
								(years)
	Vested and expected to vest		3,289,893		$	5.74			6.87	$	10,682
	Exercisable		1,885,353		$	5.74			5.39	$	6,380
Summary of Information about Restricted Stock Units Outstanding	'
	The following table summarizes information about restricted stock units outstanding as of June 30, 2013:
		Restricted Stock Units Outstanding
		Number			Weighted			Weighted		Aggregate
		of			average grant			average		intrinsic value
		shares			date fair			remaining		(in thousands)
					value			contractual
								term
								(years)
	Vested and expected to vest		799,382		$	5.87			0.91	$	6,947
Summary of Stock Appreciation Unit Activity	'
	The following table summarizes the Company’s stock appreciation unit activity during the six months ended June 30, 2013:
		Stock			Weighted
		Appreciation			average
		Units			exercise
					price
	Stock appreciation units outstanding as of December 31, 2012		212,534		$	7.07
	Stock appreciation units granted		250,000			5.11
	Stock appreciation units cancelled		(14,244	)		8.28
	Stock appreciation units exercised		(5,746	)		4.42
	Stock appreciation units outstanding as of June 30, 2013		442,544		$	5.96
Summary of Information about Stock Appreciation Units Outstanding	'
	The following table summarizes information about stock appreciation units outstanding as of June 30, 2013:
		Stock Appreciation Units Outstanding
		Number			Weighted			Weighted		Aggregate
		of			average			average		intrinsic  value
		units			exercise			remaining		(in thousands)
					price			contractual
								term
								(years)
	Vested and expected to vest		337,924		$	6.22			7.43	$	1,033
	Exercisable		173,824		$	6.81			5.78	$	496

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2013
Stock Based Compensation Expense	'
Stock-Based Compensation Expense Recorded	'
	The Company’s total stock-based compensation expense was recorded as follows (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June 30,
	(in thousands)	2013				2012				2013				2012
	Cost of goods sold	$	131			$	136			$	374			$	324
	Research and development		600				395				1,018				864
	Sales and marketing		344				205				582				414
	General and administrative		398				273				701				551
		$	1,473			$	1,009			$	2,675			$	2,153
Stock Option	'
Stock-Based Compensation Expense Recorded	'
	The following tables summarize the components of stock-based compensation expense for stock options for the three and six months ended June 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June 30,
		2013				2012				2013				2012
	Cost of goods sold	$	65			$	53			$	144			$	114
	Research and development		175				211				349				420
	Sales and marketing		135				90				213				184
	General and administrative		205				175				378				349
		$	580			$	529			$	1,084			$	1,067
Estimated Fair Value of All Employee Stock Options Using Black-Scholes Valuation Model	'
	The Company estimated the fair value of employee stock options using a Black-Scholes valuation model with the following assumptions:
			Three Months Ended								Six Months Ended
			June 30,								June 30,
	Stock Options		2013				2012				2013				2012
	Weighted-average expected term (years)			6.3				6.77				6.34				6.76
	Weighted-average volatility			75	%			71	%			75	%			71	%
	Risk-free interest rate			1.12-1.14	%			1.52-1.83	%			1.08-1.14	%			1.35-1.83	%
	Expected dividends			0	%			0	%			0	%			0	%
Stock Appreciation Rights (SARs)	'
Stock-Based Compensation Expense Recorded	'
	Stock appreciation units are remeasured each period at fair value. The following table summarizes the expense (credit) recognized for stock appreciation units for the three and six months ended June 30, 2013 (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June  30,
		2013				2012				2013				2012
	Cost of goods sold	$	(63	)		$	(35	)		$	(87	)		$	(40	)
	Research and development		147				1				115				(8	)
	Sales and marketing		47				(6	)			34				(10	)
	General and administrative		63				2				54				(1	)
		$	194			$	(38	)		$	116			$	(59	)
Estimated Fair Value of All Employee Stock Options Using Black-Scholes Valuation Model	'
	Based on the fair value of the stock appreciation units as of June 30, 2013, the Company had $0.1 million of unrecognized stock-based compensation expense that would be recognized over the remaining weighted-average period of 0.9 years. The Company estimated the fair value of all employee stock appreciation units using a Black-Scholes valuation model with the following assumptions:
			Three Months Ended								Six Months Ended
			June 30,								June 30,
	Stock Appreciation Units		2013				2012				2013				2012
	Weighted-average expected term (years)			2.33				3.34				2.47				3.35
	Weighted-average volatility			57	%			68	%			60	%			69	%
	Risk-free interest rate			0.19-0.30	%			0.37-0.64	%			0.19-0.46	%			0.37-1.04	%
	Expected dividends			0	%			0	%			0	%			0	%
Employee Stock Purchase Plan	'
Stock-Based Compensation Expense Recorded	'
	The following tables summarize the components of ESPP expense for the three and six months ended June 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June  30,
		2013				2012				2013				2012
	Cost of goods sold	$	75			$	54			$	155			$	121
	Research and development		100				77				220				253
	Sales and marketing		34				25				72				65
	General and administrative		24				20				64				57
		$	233			$	176			$	511			$	496
Estimated Fair Value of All Employee Stock Options Using Black-Scholes Valuation Model	'
	The value of the stock purchase right consists of: (1) the 15% discount on the purchase of the stock, (2) 85% of the call option and (3) 15% of the put option. The call option and put option were valued using the Black-Scholes option pricing model with the following assumptions:
			Three months ended								Six months ended
			June 30,								June 30,
	Stock Purchase Rights		2013				2012				2013				2012
	Weighted-average expected term (years)			0.73				0.75				0.73				0.75
	Weighted-average volatility			48	%			71	%			48	%			71	%
	Risk-free interest rate			0.09-0.16	%			0.04-0.15	%			0.09-0.16	%			0.04-0.15	%
	Expected dividends			0	%			0	%			0	%			0	%
Restricted Stock Units (RSUs)	'
Stock-Based Compensation Expense Recorded	'
	The following table summarizes the stock-based compensation expense recognized for restricted stock units for the three and six months ended June 30, 2013 (in thousands):
		Three Months Ended								Six Months Ended
		June  30,								June  30,
		2013				2012				2013				2012
	Cost of goods sold	$	54			$	64			$	162			$	129
	Research and development		178				106				334				199
	Sales and marketing		128				96				263				175
	General and administrative		106				76				205				146
		$	466			$	342			$	964			$	649

Income_Taxes_Tables

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2013
Provision for Income Taxes	'
		Three Months Ended					Six Months Ended
		June  30,					June  30,
	(in thousands)	2013		2012			2013			2012
	Benefit (provision) for income taxes	$	90	$	(377	)	$	(93	)	$	(317	)

Pension_Tables

Pension (Tables)	6 Months Ended
	Jun. 30, 2013
Defined Benefit Plans Anticipated Outflows	'
	2013 (remaining 6 months)	$	102
	2014		401
	2015		193
	2016		626
	2017		843
	Thereafter		3,989
		$	6,154
Net Periodic Pension Costs	'
	The net periodic pension costs totaled $97,000 for the three month and six month periods ended June 30, 2013. Net periodic pension costs for the three month and six month periods ended June 30, 2013 included the following (in thousands):
			Three Months Ended June 30,					Six Months Ended June 30,
			2013			2012		2013			2012
	Service costs		$	88		$	—	$	88		$	—
	Interest cost			20			—		20			—
	Expected return on plan assets			(11	)		—		(11	)		—
	Net periodic pension costs		$	97		$	—	$	97		$	—

Restatement_and_Revisions_on_t

Restatement and Revisions on the Condensed Consolidated Balance Sheets (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$37,558	$36,940
Short-term investments	36,874	64,301
Restricted cash	1,813	2,626
Accounts receivable, net of allowance for doubtful accounts	72,998	70,354
Inventories	58,227	43,793
Prepaid expenses and other current assets	8,863	7,630
Total current assets	216,333	225,644
Long-term investments	355	188
Property, plant and equipment, net	70,761	54,440
Other intangible assets, net	17,362	14,213
Other long-term assets	1,318	1,147
Total assets	306,129	295,632
Current liabilities:	'	'
Accounts payable	43,894	36,308
Notes payable	9,041	12,003
Current portion of long-term debt	8,785	5,000
Accrued and other current liabilities	20,530	19,959
Total current liabilities	82,250	73,270
Long-term debt, net of current portion	28,070	17,167
Deferred income tax liabilities	664	653
Other noncurrent liabilities	7,882	1,862
Total liabilities	118,866	92,952
Stockholders’ equity:	'	'
Preferred stock, $0.0025 par value At June 30, 2013 and December 31, 2012: 10,000,000 shares authorized, no shares issued or outstanding	'	'
Common stock, $0.0025 par value At June 30, 2013: 100,000,000 shares authorized, 30,971,280 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	77	76
Additional paid-in capital	443,157	438,858
Accumulated other comprehensive income	12,636	11,829
Accumulated deficit	-268,607	-248,083
Total stockholders’ equity	187,263	202,680
Total liabilities, redeemable common stock and stockholders’ equity	306,129	295,632
Previously Reported	'	'
Current assets:	'	'
Cash and cash equivalents	37,857	'
Short-term investments	36,874	'
Restricted cash	1,813	'
Accounts receivable, net of allowance for doubtful accounts	72,998	'
Inventories	64,164	'
Prepaid expenses and other current assets	6,684	'
Total current assets	220,390	'
Long-term investments	355	'
Property, plant and equipment, net	65,886	'
Goodwill	2,084	'
Other intangible assets, net	15,926	'
Other long-term assets	3,586	'
Total assets	308,227	'
Current liabilities:	'	'
Accounts payable	44,115	'
Notes payable	9,041	'
Current portion of long-term debt	10,535	'
Accrued and other current liabilities	19,708	'
Total current liabilities	83,399	'
Long-term debt, net of current portion	26,320	'
Deferred income tax liabilities	664	'
Other noncurrent liabilities	10,030	1,724
Total liabilities	120,413	'
Redeemable common stock	5,000	5,000
Stockholders’ equity:	'	'
Preferred stock, $0.0025 par value At June 30, 2013 and December 31, 2012: 10,000,000 shares authorized, no shares issued or outstanding	'	'
Common stock, $0.0025 par value At June 30, 2013: 100,000,000 shares authorized, 30,971,280 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	77	'
Additional paid-in capital	438,295	433,996
Accumulated other comprehensive income	12,521	'
Accumulated deficit	-268,079	'
Total stockholders’ equity	182,814	'
Total liabilities, redeemable common stock and stockholders’ equity	308,227	'
Corrections	'	'
Current assets:	'	'
Cash and cash equivalents	-299	'
Short-term investments	'	'
Restricted cash	'	'
Accounts receivable, net of allowance for doubtful accounts	'	'
Inventories	-15	'
Prepaid expenses and other current assets	306	'
Total current assets	-8	'
Long-term investments	'	'
Property, plant and equipment, net	2,045	'
Goodwill	-2,084	'
Other intangible assets, net	-62	'
Other long-term assets	-2,274	'
Total assets	-2,383	'
Current liabilities:	'	'
Accounts payable	-221	'
Notes payable	'	'
Current portion of long-term debt	-1,750	'
Accrued and other current liabilities	811	'
Total current liabilities	-1,160	'
Long-term debt, net of current portion	1,750	'
Deferred income tax liabilities	'	'
Other noncurrent liabilities	-2,293	'
Total liabilities	-1,703	'
Redeemable common stock	'	'
Stockholders’ equity:	'	'
Preferred stock, $0.0025 par value At June 30, 2013 and December 31, 2012: 10,000,000 shares authorized, no shares issued or outstanding	'	'
Common stock, $0.0025 par value At June 30, 2013: 100,000,000 shares authorized, 30,971,280 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	'	'
Additional paid-in capital	'	'
Accumulated other comprehensive income	74	'
Accumulated deficit	-754	'
Total stockholders’ equity	-680	'
Total liabilities, redeemable common stock and stockholders’ equity	-2,383	'
Penalty Payment Derivative	'	'
Current assets:	'	'
Cash and cash equivalents	'	'
Short-term investments	'	'
Restricted cash	'	'
Accounts receivable, net of allowance for doubtful accounts	'	'
Inventories	'	'
Prepaid expenses and other current assets	'	'
Total current assets	'	'
Long-term investments	'	'
Property, plant and equipment, net	'	'
Goodwill	'	'
Other intangible assets, net	'	'
Other long-term assets	'	'
Total assets	'	'
Current liabilities:	'	'
Accounts payable	'	'
Notes payable	'	'
Current portion of long-term debt	'	'
Accrued and other current liabilities	'	'
Total current liabilities	'	'
Long-term debt, net of current portion	'	'
Deferred income tax liabilities	'	'
Other noncurrent liabilities	138	'
Total liabilities	138	'
Redeemable common stock	-5,000	'
Stockholders’ equity:	'	'
Preferred stock, $0.0025 par value At June 30, 2013 and December 31, 2012: 10,000,000 shares authorized, no shares issued or outstanding	'	'
Common stock, $0.0025 par value At June 30, 2013: 100,000,000 shares authorized, 30,971,280 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	'	'
Additional paid-in capital	4,862	'
Accumulated other comprehensive income	'	'
Accumulated deficit	'	'
Total stockholders’ equity	4,862	'
Total liabilities, redeemable common stock and stockholders’ equity	'	'
Revision for Measurement Period Adjustments	'	'
Current assets:	'	'
Cash and cash equivalents	'	'
Short-term investments	'	'
Restricted cash	'	'
Accounts receivable, net of allowance for doubtful accounts	'	'
Inventories	-5,922	'
Prepaid expenses and other current assets	1,873	'
Total current assets	-4,049	'
Long-term investments	'	'
Property, plant and equipment, net	2,830	'
Goodwill	'	'
Other intangible assets, net	1,498	'
Other long-term assets	6	'
Total assets	285	'
Current liabilities:	'	'
Accounts payable	'	'
Notes payable	'	'
Current portion of long-term debt	'	'
Accrued and other current liabilities	11	'
Total current liabilities	11	'
Long-term debt, net of current portion	'	'
Deferred income tax liabilities	'	'
Other noncurrent liabilities	7	'
Total liabilities	18	'
Redeemable common stock	'	'
Stockholders’ equity:	'	'
Preferred stock, $0.0025 par value At June 30, 2013 and December 31, 2012: 10,000,000 shares authorized, no shares issued or outstanding	'	'
Common stock, $0.0025 par value At June 30, 2013: 100,000,000 shares authorized, 30,971,280 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	'	'
Additional paid-in capital	'	'
Accumulated other comprehensive income	41	'
Accumulated deficit	226	'
Total stockholders’ equity	267	'
Total liabilities, redeemable common stock and stockholders’ equity	285	'
Restated and Revised	'	'
Current assets:	'	'
Cash and cash equivalents	37,558	'
Short-term investments	36,874	'
Restricted cash	1,813	'
Accounts receivable, net of allowance for doubtful accounts	72,998	'
Inventories	58,227	'
Prepaid expenses and other current assets	8,863	'
Total current assets	216,333	'
Long-term investments	355	'
Property, plant and equipment, net	70,761	'
Goodwill	'	'
Other intangible assets, net	17,362	'
Other long-term assets	1,318	'
Total assets	306,129	'
Current liabilities:	'	'
Accounts payable	43,894	'
Notes payable	9,041	'
Current portion of long-term debt	8,785	'
Accrued and other current liabilities	20,530	'
Total current liabilities	82,250	'
Long-term debt, net of current portion	28,070	'
Deferred income tax liabilities	664	'
Other noncurrent liabilities	7,882	'
Total liabilities	118,866	'
Redeemable common stock	'	'
Stockholders’ equity:	'	'
Preferred stock, $0.0025 par value At June 30, 2013 and December 31, 2012: 10,000,000 shares authorized, no shares issued or outstanding	'	'
Common stock, $0.0025 par value At June 30, 2013: 100,000,000 shares authorized, 30,971,280 shares issued and outstanding; At December 31, 2012: 100,000,000 shares authorized, 30,546,155 shares issued and outstanding	77	'
Additional paid-in capital	443,157	'
Accumulated other comprehensive income	12,636	'
Accumulated deficit	-268,607	'
Total stockholders’ equity	187,263	'
Total liabilities, redeemable common stock and stockholders’ equity	$306,129	'

Restatement_and_Revisions_on_t1

Restatement and Revisions on the Condensed Consolidated Balance Sheets (Parenthetical) (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Preferred stock, par value	$0.00	$0.00
Common stock, par value	$0.00	$0.00

Restatement_on_the_Condensed_C

Restatement on the Condensed Consolidated Statements of Operations (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue	$74,990	$63,025	$131,053	$117,248
Cost of goods sold	59,389	47,837	103,695	90,654
Gross profit	15,601	15,188	27,358	26,594
Operating expenses:	'	'	'	'
Research and development	11,087	9,322	20,794	19,860
Sales and marketing	3,349	3,406	6,935	6,429
General and administrative	7,889	6,409	13,273	13,140
Amortization of purchased intangible assets	426	321	747	675
Total operating expenses	23,432	18,467	46,940	41,414
Loss from operations	-7,831	-3,279	-19,582	-14,820
Interest income	72	145	203	277
Interest expense	-342	-145	-505	-299
Other expense, net	-273	'	-547	-275
Total interest and other expense, net	-543	'	-849	-297
Loss before income taxes	-8,374	-3,279	-20,431	-15,117
Benefit (provision) for income taxes	90	-377	-93	-317
Net loss	-8,284	-3,656	-20,524	-15,264
Weighted average shares used to compute basic and diluted net loss per share	30,779,730	28,402,929	30,677,449	26,636,807
Previously Reported	'	'	'	'
Revenue	74,990	'	131,053	'
Cost of goods sold	59,805	'	104,138	'
Gross profit	15,185	'	26,915	'
Operating expenses:	'	'	'	'
Research and development	11,311	'	21,018	'
Sales and marketing	3,369	'	6,955	'
General and administrative	8,470	'	17,340	'
Amortization of purchased intangible assets	362	'	683	'
Total operating expenses	23,512	'	45,996	'
Loss from operations	-8,327	'	-19,081	'
Interest income	72	'	203	'
Interest expense	-342	'	-505	'
Other expense, net	-273	'	-547	'
Total interest and other expense, net	-543	'	-849	'
Loss before income taxes	-8,870	'	-19,930	'
Benefit (provision) for income taxes	-662	'	-66	'
Net loss	-9,532	'	-19,996	'
Net loss	($0.31)	'	($0.65)	'
Weighted average shares used to compute basic and diluted net loss per share	30,779,730	'	30,677,449	'
Corrections	'	'	'	'
Revenue	'	'	'	'
Cost of goods sold	1	'	-26	'
Gross profit	-1	'	26	'
Operating expenses:	'	'	'	'
Research and development	-245	'	-245	'
Sales and marketing	-20	'	-20	'
General and administrative	21	'	1,045	'
Amortization of purchased intangible assets	'	'	'	'
Total operating expenses	-244	'	780	'
Loss from operations	243	'	-754	'
Interest income	'	'	'	'
Interest expense	'	'	'	'
Other expense, net	'	'	'	'
Total interest and other expense, net	'	'	'	'
Loss before income taxes	243	'	-754	'
Benefit (provision) for income taxes	'	'	'	'
Net loss	243	'	-754	'
Net loss	'	'	'	'
Weighted average shares used to compute basic and diluted net loss per share	'	'	'	'
Revision for Measurement Period Adjustments	'	'	'	'
Revenue	'	'	'	'
Cost of goods sold	-417	'	-417	'
Gross profit	417	'	417	'
Operating expenses:	'	'	'	'
Research and development	21	'	21	'
Sales and marketing	'	'	'	'
General and administrative	79	'	79	'
Amortization of purchased intangible assets	64	'	64	'
Total operating expenses	164	'	164	'
Loss from operations	253	'	253	'
Interest income	'	'	'	'
Interest expense	'	'	'	'
Other expense, net	'	'	'	'
Total interest and other expense, net	'	'	'	'
Loss before income taxes	253	'	253	'
Benefit (provision) for income taxes	752	'	-27	'
Net loss	1,005	'	226	'
Restated and Revised	'	'	'	'
Revenue	74,990	'	131,053	'
Cost of goods sold	59,389	'	103,695	'
Gross profit	15,601	'	27,358	'
Operating expenses:	'	'	'	'
Research and development	11,087	'	20,794	'
Sales and marketing	3,349	'	6,935	'
General and administrative	8,570	'	18,464	'
Amortization of purchased intangible assets	426	'	747	'
Total operating expenses	23,432	'	46,940	'
Loss from operations	-7,831	'	-19,582	'
Interest income	72	'	203	'
Interest expense	-342	'	-505	'
Other expense, net	-273	'	-547	'
Total interest and other expense, net	-543	'	-849	'
Loss before income taxes	-8,374	'	-20,431	'
Benefit (provision) for income taxes	90	'	-93	'
Net loss	($8,284)	'	($20,524)	'
Net loss	($0.27)	'	($0.67)	'
Weighted average shares used to compute basic and diluted net loss per share	30,779,730	'	30,677,449	'

Restatement_on_the_Condensed_C1

Restatement on the Condensed Consolidated Statements of Comprehensive Loss (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net loss	($8,284)	($3,656)	($20,524)	($15,264)
Foreign currency translation adjustments	689	-472	861	-347
Unrealized loss on investments, net of tax of $0	-35	-60	-54	236
Comprehensive loss	-7,630	-4,188	-19,717	-15,375
Previously Reported	'	'	'	'
Net loss	-9,532	'	-19,996	'
Foreign currency translation adjustments	587	'	747	'
Unrealized loss on investments, net of tax of $0	-35	'	-54	'
Comprehensive loss	-8,980	'	-19,303	'
Corrections	'	'	'	'
Net loss	243	'	-754	'
Foreign currency translation adjustments	61	'	73	'
Unrealized loss on investments, net of tax of $0	'	'	'	'
Comprehensive loss	304	'	-681	'
Revision for Measurement Period Adjustments	'	'	'	'
Net loss	1,005	'	226	'
Foreign currency translation adjustments	41	'	41	'
Unrealized loss on investments, net of tax of $0	'	'	'	'
Comprehensive loss	1,046	'	267	'
Restated and Revised	'	'	'	'
Net loss	-8,284	'	-20,524	'
Foreign currency translation adjustments	689	'	861	'
Unrealized loss on investments, net of tax of $0	-35	'	-54	'
Comprehensive loss	($7,630)	'	($19,717)	'

Restatement_on_the_Condensed_C2

Restatement on the Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Unrealized loss on investments, tax	$0	$0	$0	$0

Restatement_and_Revisions_Cons

Restatement and Revisions Consolidated Statements of Cash Flows (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities	'	'
Net loss	($20,524)	($15,264)
Depreciation and amortization	9,512	9,827
Stock-based compensation expense	2,675	2,153
Deferred taxes	-6	387
Amortization of premiums and discounts on investments	669	386
Allowance for doubtful accounts	-144	93
Write-down of inventories	849	2,931
Others	465	82
Change in assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable	-1,766	-6,771
Inventories	-1,577	-8,081
Prepaid expenses and other current assets	47	-1,303
Accounts payable	2,308	3,763
Accrued and other liabilities	104	733
Net cash used in operating activities	-4,106	-11,814
Cash flows from investing activities	'	'
Purchase of property, plant and equipment	-10,545	-4,965
Proceeds from disposition of property, plant and equipment	92	'
Purchase of marketable securities	-48,771	-112,773
Proceeds from sale of marketable securities	35,247	53,294
Proceeds from maturity of securities	40,255	29,532
Decrease in restricted cash	859	647
Acquisition, net of cash acquired	-14,979	'
Net cash provided by (used in) investing activities	2,158	-32,440
Cash flows from financing activities	'	'
Proceeds from issuance of stock under ESPP	1,162	923
Proceeds from bank loans	26,443	'
Repayment of bank loans	-22,360	-2,500
Proceeds from issuance of notes payable	9,471	12,759
Repayment of notes payable	-12,661	-16,064
Net cash provided by financing activities	2,627	34,942
Effect of exchange rates on cash and cash equivalents	-61	56
Net increase (decrease) in cash and cash equivalents	618	-9,256
Cash and cash equivalents at the beginning of the period	36,940	32,485
Cash and cash equivalents at the end of the period	37,558	23,229
Previously Reported	'	'
Cash flows from operating activities	'	'
Net loss	-19,996	'
Depreciation and amortization	9,769	'
Stock-based compensation expense	2,675	'
Deferred taxes	-6	'
Amortization of premiums and discounts on investments	669	'
Allowance for doubtful accounts	-144	'
Write-down of inventories	831	'
Others	471	'
Change in assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable	-1,766	'
Inventories	-838	'
Prepaid expenses and other current assets	-48	'
Accounts payable	4,346	'
Accrued and other liabilities	-2,590	'
Net cash used in operating activities	-4,103	'
Cash flows from investing activities	'	'
Purchase of property, plant and equipment	-10,300	'
Proceeds from disposition of property, plant and equipment	92	'
Purchase of marketable securities	-48,771	'
Proceeds from sale of marketable securities	35,247	'
Proceeds from maturity of securities	40,255	'
Decrease in restricted cash	859	'
Acquisition, net of cash acquired	-14,928	'
Net cash provided by (used in) investing activities	2,454	'
Cash flows from financing activities	'	'
Proceeds from issuance of stock under ESPP	1,162	'
Proceeds from bank loans	40,000	'
Repayment of bank loans	-35,917	'
Proceeds from issuance of notes payable	9,471	'
Repayment of notes payable	-12,661	'
Net cash provided by financing activities	2,627	'
Effect of exchange rates on cash and cash equivalents	-61	'
Net increase (decrease) in cash and cash equivalents	917	'
Cash and cash equivalents at the beginning of the period	36,940	'
Cash and cash equivalents at the end of the period	37,857	'
Corrections	'	'
Cash flows from operating activities	'	'
Net loss	-754	'
Depreciation and amortization	-546	'
Stock-based compensation expense	'	'
Deferred taxes	'	'
Amortization of premiums and discounts on investments	'	'
Allowance for doubtful accounts	'	'
Write-down of inventories	'	'
Others	'	'
Change in assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable	'	'
Inventories	-187	'
Prepaid expenses and other current assets	97	'
Accounts payable	-2,038	'
Accrued and other liabilities	2,667	'
Net cash used in operating activities	-3	'
Cash flows from investing activities	'	'
Purchase of property, plant and equipment	-245	'
Proceeds from disposition of property, plant and equipment	'	'
Purchase of marketable securities	'	'
Proceeds from sale of marketable securities	'	'
Proceeds from maturity of securities	'	'
Decrease in restricted cash	'	'
Acquisition, net of cash acquired	-51	'
Net cash provided by (used in) investing activities	-296	'
Cash flows from financing activities	'	'
Proceeds from issuance of stock under ESPP	'	'
Proceeds from bank loans	-13,557	'
Repayment of bank loans	13,557	'
Proceeds from issuance of notes payable	'	'
Repayment of notes payable	'	'
Net cash provided by financing activities	'	'
Effect of exchange rates on cash and cash equivalents	'	'
Net increase (decrease) in cash and cash equivalents	-299	'
Cash and cash equivalents at the beginning of the period	'	'
Cash and cash equivalents at the end of the period	-299	'
Revision for Measurement Period Adjustments	'	'
Cash flows from operating activities	'	'
Net loss	226	'
Depreciation and amortization	289	'
Stock-based compensation expense	'	'
Deferred taxes	'	'
Amortization of premiums and discounts on investments	'	'
Allowance for doubtful accounts	'	'
Write-down of inventories	18	'
Others	-6	'
Change in assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable	'	'
Inventories	-552	'
Prepaid expenses and other current assets	-2	'
Accounts payable	'	'
Accrued and other liabilities	27	'
Net cash used in operating activities	'	'
Cash flows from investing activities	'	'
Purchase of property, plant and equipment	'	'
Proceeds from disposition of property, plant and equipment	'	'
Purchase of marketable securities	'	'
Proceeds from sale of marketable securities	'	'
Proceeds from maturity of securities	'	'
Decrease in restricted cash	'	'
Acquisition, net of cash acquired	'	'
Net cash provided by (used in) investing activities	'	'
Cash flows from financing activities	'	'
Proceeds from issuance of stock under ESPP	'	'
Proceeds from bank loans	'	'
Repayment of bank loans	'	'
Proceeds from issuance of notes payable	'	'
Repayment of notes payable	'	'
Net cash provided by financing activities	'	'
Effect of exchange rates on cash and cash equivalents	'	'
Net increase (decrease) in cash and cash equivalents	'	'
Cash and cash equivalents at the beginning of the period	'	'
Cash and cash equivalents at the end of the period	'	'
Restated and Revised	'	'
Cash flows from operating activities	'	'
Net loss	-20,524	'
Depreciation and amortization	9,512	'
Stock-based compensation expense	2,675	'
Deferred taxes	-6	'
Amortization of premiums and discounts on investments	669	'
Allowance for doubtful accounts	-144	'
Write-down of inventories	849	'
Others	465	'
Change in assets and liabilities, net of effects of acquisitions:	'	'
Accounts receivable	-1,766	'
Inventories	-1,577	'
Prepaid expenses and other current assets	47	'
Accounts payable	2,308	'
Accrued and other liabilities	104	'
Net cash used in operating activities	-4,106	'
Cash flows from investing activities	'	'
Purchase of property, plant and equipment	-10,545	'
Proceeds from disposition of property, plant and equipment	92	'
Purchase of marketable securities	-48,771	'
Proceeds from sale of marketable securities	35,247	'
Proceeds from maturity of securities	40,255	'
Decrease in restricted cash	859	'
Acquisition, net of cash acquired	-14,979	'
Net cash provided by (used in) investing activities	2,158	'
Cash flows from financing activities	'	'
Proceeds from issuance of stock under ESPP	1,162	'
Proceeds from bank loans	26,443	'
Repayment of bank loans	-22,360	'
Proceeds from issuance of notes payable	9,471	'
Repayment of notes payable	-12,661	'
Net cash provided by financing activities	2,627	'
Effect of exchange rates on cash and cash equivalents	-61	'
Net increase (decrease) in cash and cash equivalents	618	'
Cash and cash equivalents at the beginning of the period	36,940	'
Cash and cash equivalents at the end of the period	$37,558	'

Restatement_and_Revision_of_Un2

Restatement and Revision of Unaudited Condensed Consolidated Financial Statements - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Total current liabilities	$82,250,000	'	$82,250,000	'	$73,270,000
Cost of goods sold	59,389,000	47,837,000	103,695,000	90,654,000	'
Research and development	11,087,000	9,322,000	20,794,000	19,860,000	'
Acquisition, net of cash acquired	'	'	14,979,000	'	'
Current portion of long-term debt	8,785,000	'	8,785,000	'	5,000,000
Total operating expenses	23,432,000	18,467,000	46,940,000	41,414,000	'
Cash and cash equivalents	37,558,000	'	37,558,000	'	36,940,000
Accounts payable	'	'	2,308,000	3,763,000	'
Accrued and other liabilities	'	'	104,000	733,000	'
Repayment of bank loans	'	'	-22,360,000	-2,500,000	'
Proceeds from bank loans	'	'	26,443,000	'	'
Long-term debt, net of current portion	28,070,000	'	28,070,000	'	17,167,000
Property, plant and equipment, net	70,761,000	'	70,761,000	'	54,440,000
Other noncurrent liabilities	1,348,000	'	1,348,000	'	1,536,000
Additional paid-in capital	443,157,000	'	443,157,000	'	438,858,000
Purchase Accounting Corrections	'	'	'	'	'
Real estate registration tax	'	'	500,000	'	'
Real estate acquisition tax	'	'	800,000	'	'
Goodwill	-2,100,000	'	-2,100,000	'	'
Total current liabilities	100,000	'	100,000	'	'
Cost of goods sold	-100,000	'	-100,000	'	'
Research and development	-200,000	'	-200,000	'	'
Acquisition, net of cash acquired	'	'	900,000	'	'
Classification Corrections	'	'	'	'	'
Cost of goods sold	100,000	'	300,000	'	'
Long term assets related to pension obligation	-2,100,000	'	-2,100,000	'	'
Current portion of long-term debt	1,750,000	'	1,750,000	'	'
Total operating expenses	100,000	'	300,000	'	'
Cash and cash equivalents	-299,000	'	-299,000	'	'
Accounts payable	'	'	-1,700,000	'	'
Accrued and other liabilities	'	'	1,700,000	'	'
Repayment of bank loans	'	'	13,600,000	'	'
Proceeds from bank loans	'	'	20,900,000	'	'
Other Corrections | Asset Retirement Obligation Costs	'	'	'	'	'
Long-term debt, net of current portion	-300,000	'	-300,000	'	'
Other Corrections | Software Service, Support and Maintenance Arrangement	'	'	'	'	'
Property, plant and equipment, net	-200,000	'	-200,000	'	'
Other Corrections | Vendors	'	'	'	'	'
Cost of goods sold	-200,000	'	-300,000	'	'
Total operating expenses	100,000	'	100,000	'	'
Penalty Payment Derivative	'	'	'	'	'
Other noncurrent liabilities	138,000	'	138,000	'	'
Penalty Payment Derivative | Embedded Derivative Financial Instruments	'	'	'	'	'
Redeemable common stock	-5,000,000	'	-5,000,000	'	'
Additional paid-in capital	$4,862,000	'	$4,862,000	'	'

Effect_of_Reclassification_on_

Effect of Reclassification on Balance Sheet (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other noncurrent liabilities	$7,882	$1,862
Additional paid-in capital	443,157	438,858
Previously Reported	'	'
Other noncurrent liabilities	10,030	1,724
Redeemable common stock	5,000	5,000
Additional paid-in capital	$438,295	$433,996

Discontinued_Operations_Additi

Discontinued Operations - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2012
	USD ($)	Segment, Discontinued Operations	Segment, Discontinued Operations	Segment, Discontinued Operations
		USD ($)	CNY	USD ($)
Discontinued Operations [Line Items]	'	'	'	'
Sale of equity interest	'	100.00%	100.00%	'
Proceed from sale of Business	'	$2,100,000	13,000,000	'
Discontinued operations gain on disposal, net of tax	$636,000	'	'	$600,000
Date of agreement for sale of business	'	11-Jan-12	11-Jan-12	'
Closing date of agreement for sale of business	'	13-Mar-12	13-Mar-12	'

Revenue_and_Components_of_Net_

Revenue and Components of Net Income Related to Discontinued Operations (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]	'	'	'	'
Revenue	'	'	'	$590
Income from discontinued operations before income taxes	'	'	'	284
Provision for income taxes	'	'	'	-114
Income from discontinued operations	'	'	'	$170

Summary_of_Unrealized_Gains_an

Summary of Unrealized Gains and Losses Related to Cash Equivalents and Investments in Marketable Securities (Detail) (USD $)	Jun. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	$36,872		$64,246
Gross Unrealized Gains	26		67
Gross Unrealized Losses	-13		-1
Fair Value	36,885	[1]	64,312	[1]
Cash and Cash Equivalents | Money Market Funds	'		'
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	11		11
Gross Unrealized Gains	'		'
Gross Unrealized Losses	'		'
Fair Value	11		11
Short-term Investments	'		'
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	36,861		64,235
Gross Unrealized Gains	26		67
Gross Unrealized Losses	-13		-1
Fair Value	36,874		64,301
Short-term Investments | Money Market Funds	'		'
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	13,098		7,259
Gross Unrealized Gains	'		'
Gross Unrealized Losses	'		'
Fair Value	13,098		7,259
Short-term Investments | Corporate Bond Securities	'		'
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	13,657		23,151
Gross Unrealized Gains	20		43
Gross Unrealized Losses	-3		-1
Fair Value	13,674		23,193
Short-term Investments | U.S. Federal Agencies	'		'
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	3,060		27,241
Gross Unrealized Gains	1		10
Gross Unrealized Losses	'		'
Fair Value	3,061		27,251
Short-term Investments | Foreign Bonds and Notes	'		'
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	5,245		4,682
Gross Unrealized Gains	5		14
Gross Unrealized Losses	-10		'
Fair Value	5,240		4,696
Short-term Investments | Municipal Obligations	'		'
Schedule Of Available For Sale Securities [Line Items]	'		'
Amortized Cost	1,801		1,902
Gross Unrealized Gains	'		'
Gross Unrealized Losses	'		'
Fair Value	$1,801		$1,902
[1]	Interest income receivable included in total investments balance was $0.2 million and $0.4 million at June 30, 2013 and December 31, 2012, respectively.

Summary_of_Unrealized_Gains_an1

Summary of Unrealized Gains and Losses Related to Cash Equivalents and Investments in Marketable Securities (Parenthetical) (Detail) (Available-for-sale Securities, USD $)	Jun. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Available-for-sale Securities	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Interest income receivable	$0.20	$0.40

Maturities_of_Short_Term_Inves

Maturities of Short Term Investments (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Investments [Line Items]	'	'
Less than 1 year	$33,090	$51,861
Due in 1 to 2 years	'	10,550
Due in 2 to 5 years	1,994	'
Due after 5 years	1,801	1,901
Total	$36,885	$64,312

Fair_Value_of_Financial_Assets

Fair Value of Financial Assets (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	$36,885	$64,312
Fair Value, Inputs, Level 1	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	13,109	7,270
Fair Value, Inputs, Level 2	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	23,776	57,042
Fair Value, Inputs, Level 3	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	'	'
Money Market Funds	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	13,109	7,270
Money Market Funds | Fair Value, Inputs, Level 1	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	13,109	7,270
Money Market Funds | Fair Value, Inputs, Level 3	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	'	'
Corporate Bond Securities	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	13,674	23,193
Corporate Bond Securities | Fair Value, Inputs, Level 2	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	13,674	23,193
Corporate Bond Securities | Fair Value, Inputs, Level 3	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	'	'
U.S. Federal Agencies	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	3,061	27,251
U.S. Federal Agencies | Fair Value, Inputs, Level 2	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	3,061	27,251
U.S. Federal Agencies | Fair Value, Inputs, Level 3	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	'	'
Foreign Bonds and Notes	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	5,240	4,696
Foreign Bonds and Notes | Fair Value, Inputs, Level 2	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	5,240	4,696
Foreign Bonds and Notes | Fair Value, Inputs, Level 3	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	'	'
Municipal Obligations	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	1,801	1,902
Municipal Obligations | Fair Value, Inputs, Level 2	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	1,801	1,902
Municipal Obligations | Fair Value, Inputs, Level 3	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Assets, fair value	'	'

Cash_Equivalents_and_Investmen2

Cash Equivalents and Investments and Fair Value Disclosures - Additional Information (Detail) (Fair Value, Inputs, Level 2, USD $)	Jun. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value, Inputs, Level 2	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Time deposits	$6.40	$14.70

Fair_Value_of_Financial_Liabil

Fair Value of Financial Liabilities (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Contingent Consideration	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	$959	$959
Penalty Payment Derivative	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	138	138
Fair Value, Inputs, Level 1	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	'	'
Fair Value, Inputs, Level 1 | Contingent Consideration	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	'	'
Fair Value, Inputs, Level 1 | Penalty Payment Derivative	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	'	'
Fair Value, Inputs, Level 2	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	'	'
Fair Value, Inputs, Level 2 | Contingent Consideration	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	'	'
Fair Value, Inputs, Level 2 | Penalty Payment Derivative	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	'	'
Fair Value, Inputs, Level 3 | Contingent Consideration	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	959	959
Fair Value, Inputs, Level 3 | Penalty Payment Derivative	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Liabilities, fair value	$138	$138

Computation_of_Basic_and_Dilut

Computation of Basic and Diluted Net Loss Per Share (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator:	'	'	'	'
Loss from continuing operations	($8,284)	($3,656)	($20,524)	($15,434)
Income from discontinued operations	'	'	'	170
Net loss	($8,284)	($3,656)	($20,524)	($15,264)
Denominator:	'	'	'	'
Basic and diluted	30,779,730	28,402,929	30,677,449	26,636,807
Basic and diluted net income (loss) per share:	'	'	'	'
Continuing operations	($0.27)	($0.13)	($0.67)	($0.58)
Discontinued operations	'	'	'	$0.01
Net loss	($0.27)	($0.13)	($0.67)	($0.57)

Potentially_Dilutive_Securitie

Potentially Dilutive Securities Excluded From Computation of Diluted Net Loss Per Share Attributable to Common Stockholders (Detail)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Potentially dilutive securities, excluded from computation of diluted net income (loss) per share	4,883,047	3,591,030
Employee Stock Option	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Potentially dilutive securities, excluded from computation of diluted net income (loss) per share	3,780,345	2,668,630
Restricted Stock Units (RSUs)	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Potentially dilutive securities, excluded from computation of diluted net income (loss) per share	853,129	648,404
Employee Stock Purchase Plan	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Potentially dilutive securities, excluded from computation of diluted net income (loss) per share	245,091	269,514
Common Stock Warrants	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Potentially dilutive securities, excluded from computation of diluted net income (loss) per share	4,482	4,482

Business_Combination_Additiona

Business Combination - Additional Information (Detail)

1 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

Mar. 29, 2013

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Mar. 29, 2013

Jun. 30, 2013

Jun. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2012

Jun. 30, 2012

Mar. 29, 2013

Sep. 30, 2013

Mar. 29, 2013

Mar. 29, 2013

Mar. 29, 2013

Mar. 29, 2013

Jun. 30, 2013

Mar. 29, 2013

Mar. 29, 2013

Mar. 29, 2013

USD ($)

USD ($)

USD ($)

USD ($)

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

USD ($)

USD ($)

USD ($)

Inventory

Property, plant and equipment

Pro Forma

Pro Forma

Pro Forma

Pro Forma

Pro Forma

Pro Forma

Pro Forma

Pro Forma

Pro Forma

Pro Forma

Customer Relationships

Customer Relationships

Minimum

Minimum

Maximum

Maximum

Notes Payable

Other Liability

To be paid in three equal installments

To be paid in three equal installments

USD ($)

USD ($)

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

One Time Charges and Amortization of Fair Value Adjustments

USD ($)

Developed Technology Rights

Developed Technology Rights

USD ($)

USD ($)

Notes Payable

Notes Payable

USD ($)

USD ($)

USD ($)

USD ($)

Elimination

Elimination

Elimination

Elimination

Depreciation And Amortization Adjustments Related To Acquisition

Depreciation And Amortization Adjustments Related To Acquisition

USD ($)

JPY (¥)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total consideration

'

'

'

'

'

$24,258,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition, net of cash acquired

'

'

'

14,979,000

'

14,979,000

'

14,979,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liabilities assumed

'

'

'

'

'

8,819,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,130,000

1,800,000

11,100,000

1,050,000,000

Withheld and placed into escrow

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of notes unpaid balance per year

'

'

'

'

'

1.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition-related transaction costs

'

681,000

312,000

5,191,000

706,000

'

'

5,200,000

'

'

'

200,000

'

800,000

700,000

'

5,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

11,400,000

11,400,000

'

'

'

'

'

'

'

-1,000,000

-1,900,000

-1,400,000

'

'

'

'

'

'

'

'

'

'

'

'

Property, plant and equipment useful life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'10 years

'

'

'

'

'

Royalty rate on total revenue

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible assets useful life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 years

'

'

'4 years

'

'5 years

'

'

'

'

Weighted average amortization period for intangible assets

'5 years 4 months 24 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cost of goods sold

'

59,389,000

47,837,000

103,695,000

90,654,000

'

'

'

'

'

-2,100,000

1,400,000

-2,100,000

4,000,000

'

-900,000

-1,800,000

-1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

Total operating expenses

'

23,432,000

18,467,000

46,940,000

41,414,000

'

'

'

'

'

'

'

'

'

'

'

'

'

-200,000

-200,000

'

'

'

'

'

'

'

'

'

'

Net of amortization included decrease in fair value of assets

'

'

'

'

'

'

'

'

$5,900,000

$2,800,000

'

'

'

'

'

'

'

'

'

'

'

$1,500,000

'

'

'

'

'

'

'

'

Acquisition_Accounting_and_Tan

Acquisition Accounting and Tangible and Intangible Assets Acquired (Detail) (USD $)	1 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2013	Jun. 30, 2013
Business Acquisition [Line Items]	'	'
Acquisition, net of cash acquired	'	$14,979
NeoPhotonics Semiconductor	'	'
Business Acquisition [Line Items]	'	'
Acquisition, net of cash acquired	14,979	14,979
Net receivable from Lapis	'	-1,851
Liabilities assumed	8,819	'
Total purchase consideration	24,258	'
Inventory	'	13,309
Other current assets	'	35
Land, property, plant and equipment	'	14,433	[1]
Total intangible assets acquired	'	33,077
NeoPhotonics Semiconductor | Developed Technology Rights	'	'
Business Acquisition [Line Items]	'	'
Total intangible assets acquired	'	2,120
NeoPhotonics Semiconductor | Customer Relationships	'	'
Business Acquisition [Line Items]	'	'
Total intangible assets acquired	'	3,180
NeoPhotonics Semiconductor | Notes Payable	'	'
Business Acquisition [Line Items]	'	'
Liabilities assumed	'	11,130
NeoPhotonics Semiconductor | Other Liability	'	'
Business Acquisition [Line Items]	'	'
Liabilities assumed	1,800	'
Pension and retirement obligations	6,471	'
Other compensation-related liabilities	1,083	'
Other current liabilities	$1,265	'
[1]	Includes land of $3.5 million, buildings of $3.9 million and machinery, equipment, furniture and fixtures of $7.0 million.

Acquisition_Accounting_and_Tan1

Acquisition Accounting and Tangible and Intangible Assets Acquired (Parenthetical) (Detail) (NeoPhotonics Semiconductor, USD $)	Jun. 30, 2013
In Millions, unless otherwise specified
NeoPhotonics Semiconductor	'
Business Acquisition [Line Items]	'
Land	$3.50
Buildings	3.9
Machinery, equipment, furniture and fixtures	$7

Pro_Forma_Results_of_Operation

Pro Forma Results of Operations (Detail) (NeoPhotonics Semiconductor, USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
NeoPhotonics Semiconductor	'	'	'	'
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]	'	'	'	'
Revenue	$74,990	$78,805	$143,744	$146,342
Net loss	($5,519)	($2,283)	($10,796)	($14,321)
Basic and diluted net loss per share	($0.18)	($0.08)	($0.35)	($0.54)

Accounts_Receivable_Net_Detail

Accounts Receivable, Net (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts Notes And Loans Receivable [Line Items]	'	'
Accounts receivable	$68,265	$66,338
Trade notes receivable	5,457	4,979
Allowance for doubtful accounts	-724	-963
Accounts Receivable, Net, Total	$72,998	$70,354

Inventory_Detail

Inventory (Detail) (USD $)	Jun. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Inventory [Line Items]	'		'
Raw materials	$22,532		$20,520
Work in process	19,350		8,603
Finished goods	16,345	[1]	14,670	[1]
Inventories	$58,227		$43,793
[1]	Finished goods inventory at offsite managed inventory locations was $4.4 million and $4.5 million as of June 30, 2013 and December 31, 2012, respectively.

Inventory_Parenthetical_Detail

Inventory (Parenthetical) (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Inventory [Line Items]	'	'
Finished goods, at vendor managed inventory locations	$4.40	$4.50

Purchased_Intangible_Assets_De

Purchased Intangible Assets (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Finite Lived Intangible Assets [Line Items]	'	'
Gross Assets	$51,875	$46,379
Accumulated Amortization	-34,513	-32,166
Net Assets	17,362	14,213
Technology and patents	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Assets	34,456	32,176
Accumulated Amortization	-24,399	-22,869
Net Assets	10,057	9,307
Customer Relationships	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Assets	15,083	11,898
Accumulated Amortization	-8,917	-8,148
Net Assets	6,166	3,750
Leasehold interest	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Assets	1,386	1,355
Accumulated Amortization	-247	-241
Net Assets	1,139	1,114
Noncompete agreements	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Assets	950	950
Accumulated Amortization	-950	-908
Net Assets	'	$42

Amortization_Expense_of_Compan

Amortization Expense of Company's Purchased Intangible Assets (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Finite Lived Intangible Assets [Line Items]	'	'	'	'
Cost of goods sold	$772	$616	$1,200	$1,214
Operating expenses	426	321	747	675
Total	$1,198	$937	$1,947	$1,889

Estimated_Future_Amortization_

Estimated Future Amortization Expense of Purchased Intangible Assets (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Expected Amortization Expense [Line Items]	'	'
2013 (remaining 6 months)	$2,169	'
2014	4,456	'
2015	4,440	'
2016	3,694	'
2017	841	'
Thereafter	1,762	'
Net Assets	$17,362	$14,213

Accrued_and_Other_Current_Liab

Accrued and Other Current Liabilities (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts Payable And Accrued Liabilities [Line Items]	'	'
Employee-related	$9,935	$12,293
Other	10,595	7,666
Accrued and other current liabilities	$20,530	$19,959

Other_Noncurrent_Liabilities_D

Other Noncurrent Liabilities (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Non Current Liabilities [Line Items]	'	'
Employee-related	$6,396	$188
Payment penalty derivative (Note 11)	138	138
Other	1,348	1,536
Other noncurrent liabilities	$7,882	$1,862

Summary_of_Movement_in_Warrant

Summary of Movement in Warranty Accrual (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Product Liability Contingency [Line Items]	'	'	'	'
Beginning balance	$1,184	$1,215	$1,072	$1,443
Warranty accruals	408	134	434	153
Settlements and adjustments	-131	-51	-45	-298
Ending balance	$1,461	$1,298	$1,461	$1,298

Balance_Sheet_Components_Addit

Balance Sheet Components - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2013
Summary Of Significant Accounting Policies [Line Items]	'
Product warranty period, minimum	'1 year
Product warranty period, maximum	'2 years

Components_of_Debt_Obligations

Components of Debt, Obligations, Weighted Average Interest Rate and Additional Fair Value Information Relating to Outstanding Debt Instruments (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Notes payable, carrying amount	$9,041	$12,003
Short-term debt, carrying amount	5,250	5,000
Total short-term debt, carrying amount	8,785	5,000
Long-term debt, carrying amount	21,000	17,167
Long term debt, non-current portion, carrying amount	28,070	17,167
Notes payable, fair value	9,041	12,003
Short-term debt, fair value	5,250	4,892
Total short-term debt, fair value	8,785	4,892
Long term debt, non-current portion, fair value	21,000	16,336
Long term debt, fair value	28,070	16,336
Short-term Debt	'	'
Debt Instrument [Line Items]	'	'
Weighted Average Interest Rate	2.94%	2.20%
Total long-term debt	'	'
Debt Instrument [Line Items]	'	'
Weighted Average Interest Rate	2.94%	2.20%
NeoPhotonics Semiconductor	'	'
Debt Instrument [Line Items]	'	'
Notes payable, carrying amount	3,535	'
Long-term notes payable, carrying amount	7,070	0
Notes payable, fair value	3,535	'
Long-term notes payable, fair value	$7,070	$0
NeoPhotonics Semiconductor | Short-term Debt | Notes Payable	'	'
Debt Instrument [Line Items]	'	'
Weighted Average Interest Rate	1.50%	'
NeoPhotonics Semiconductor | Total long-term debt | Notes Payable	'	'
Debt Instrument [Line Items]	'	'
Weighted Average Interest Rate	1.50%	'

Debt_Additional_Information_De

Debt - Additional Information (Detail)

1 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

12 Months Ended

Dec. 20, 2007

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Jun. 30, 2013

Jun. 30, 2013

Mar. 29, 2013

Jun. 30, 2013

Mar. 29, 2013

Mar. 29, 2013

Mar. 29, 2013

Mar. 29, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

USD ($)

USD ($)

Term Loan

Equipment

Libor Plus Rate

Libor Plus Rate

Libor Plus Rate

Libor Plus Rate

Capital expenditure, authorized

Base Rate

LIBOR

Credit Facility

Credit Facility

Credit Facility

Credit Facility

Credit Facility

Credit Facility

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

NeoPhotonics Semiconductor

Series of Individually Immaterial Business Acquisitions

Series of Individually Immaterial Business Acquisitions

Series of Individually Immaterial Business Acquisitions

Series of Individually Immaterial Business Acquisitions

USD ($)

USD ($)

Term Loan

Equipment

Equipment

Term Loan

Term Loan

Libor Plus Rate

Libor Plus Rate

Libor Plus Rate

Base Rate

LIBOR

USD ($)

Notes Payable

Current portion of long-term debt

Total long-term debt, net of current portion

To be paid in three equal installments

To be paid in three equal installments

USD ($)

Libor Plus Rate

Capital expenditure, authorized

Credit Facility

USD ($)

Equipment

USD ($)

USD ($)

USD ($)

Notes Payable

Notes Payable

USD ($)

Libor Plus Rate

USD ($)

JPY (¥)

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liabilities assumed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$8,819,000

$11,130,000

$3,500,000

$7,100,000

$11,100,000

¥ 1,050,000,000

'

'

'

'

Obligation bears interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.50%

'

'

'

'

'

'

'

'

'

Revolving line of credit, maximum borrowing capacity

'

0

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility remaining borrowing capacity

'

20,000,000

0

'

'

'

'

'

'

7,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,800,000

'

Interest rate description

'

'

'

'

'

'Borrowings under this revolving line of credit include an interest rate option of a base rate as defined in the agreement plus 1.5% or LIBOR plus 2.5%.

'Borrowings under this facility bear interest at a rate of LIBOR plus 2%.

'Borrowings under the term loan include an interest rate option of a base rate as defined in the agreement plus 1.75% or LIBOR plus 2.75%.

'Borrowings under this facility would bear interest at a rate of LIBOR plus 2%.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'The advances bear interest at a rate of LIBOR plus 2%.

'

'

Line of credit facility, rate

'

'

'

'

'

'

'

2.75%

'

'

1.75%

2.94%

'

2.50%

2.00%

2.00%

1.50%

2.69%

'

'

'

'

'

'

'

'

'

2.00%

Credit facility outstanding balance

'

'

'

26,300,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,200,000

'

'

'

Line of credit facility, expiration date

'

'

'

'2017-06

'

'

'

'

'

'

'

'

'2016-03

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Covenant Compliance

'

'The Company’s U.S. loan and security agreement requires it to maintain specified financial covenants, including a liquidity ratio, restricts its ability to incur additional debt or to engage in specified transactions and is secured by substantially all of its U.S. assets, other than intellectual property assets. As of June 30, 2013 and December 31, 2012, the Company was in compliance with the covenants contained in this agreement.

'The Company’s U.S. loan and security agreement requires it to maintain specified financial covenants, including a liquidity ratio, restricts its ability to incur additional debt or to engage in specified transactions and is secured by substantially all of its U.S. assets, other than intellectual property assets. As of June 30, 2013 and December 31, 2012, the Company was in compliance with the covenants contained in this agreement.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrant issued

4,482

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price of warrant

29

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted cash

'

$1,813,000

$2,626,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future_Minimum_Commitments_Und

Future Minimum Commitments Under All Operating Leases (Detail) (USD $)	Jun. 30, 2013
In Thousands, unless otherwise specified
Operating Leased Assets [Line Items]	'
2013 (remaining 6 months)	$1,161
2014	1,583
2015	1,342
2016	744
2017	500
Thereafter	968
Operating Leases, Future Minimum Payments Due, Total	$6,298

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	5-May-10	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Dec. 31, 2012	Oct. 12, 2011
						Santur Corporation	Santur Corporation	Santur Corporation
Commitments And Contingencies Disclosure [Line Items]	'	'	'	'	'	'	'	'
Rent expense	'	$0.50	$0.50	$1.10	$1.10	'	'	'
Agreement period not to refile claims	'90 day	'	'	'	'	'	'	'
Total outstanding purchase obligations	'	29.3	'	29.3	'	'	'	'
Additional contingent payable amount	'	'	'	'	'	'	'	7.5
Fair value of contingent consideration	'	'	'	'	'	$1	$1	'

Reserved_Shares_of_authorized_

Reserved Shares of authorized but Unissued Common Stock (Detail)	Jun. 30, 2013
Share Based Compensation Shares Authorized Under Award Type [Line Items]	'
Common stock	7,070,867
Employee Stock Option	'
Share Based Compensation Shares Authorized Under Award Type [Line Items]	'
Common stock	6,471,511
Employee Stock Purchase Plans	'
Share Based Compensation Shares Authorized Under Award Type [Line Items]	'
Common stock	594,874
Common Stock Warrants	'
Share Based Compensation Shares Authorized Under Award Type [Line Items]	'
Common stock	4,482

Stock_Option_and_Restricted_St

Stock Option and Restricted Stock Unit Activity (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Shares Available for Grant	'	'	'	'
Beginning Balance	'	'	382,668	'
Authorized for issuance	'	'	2,569,115	'
Granted	'	'	-1,195,170	'
Exercised/Converted	'	'	'	'
Forfeited	'	'	81,424	'
Ending Balance	1,838,037	'	1,838,037	'
Number of Shares	'	'	'	'
Beginning Balance	'	'	2,773,887	'
Authorized for issuance	'	'	'	'
Granted	'	'	1,164,130	'
Exercised/Converted	'	'	-120,697	'
Forfeited	'	'	-36,975	'
Ending Balance	3,780,345	'	3,780,345	'
Weighted Average Exercise Price	'	'	'	'
Beginning Balance	'	'	$5.87	'
Granted	'	'	$5.20	'
Exercised/Converted	'	'	$4.74	'
Forfeited	'	'	$8.75	'
Ending Balance	$5.67	'	$5.67	'
Restricted Stock Units (RSUs)	'	'	'	'
Number of Units	'	'	'	'
Beginning Balance	'	'	924,823	'
Granted	'	'	31,040	'
Exercised/Converted	'	'	-54,634	'
Forfeited	'	'	-48,100	'
Ending Balance	853,129	'	853,129	'
Weighted Average Grant Date Fair Value	'	'	'	'
Beginning Balance	'	'	$5.84	'
Granted	$8.09	$4.50	$7.16	$5.99
Exercised/Converted	'	'	$5.80	'
Forfeited	'	'	$5.90	'
Ending Balance	$5.87	'	$5.87	'

Summary_Information_about_Stoc

Summary Information about Stock Options Outstanding (Detail) (USD $)	6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013
Number of Shares	'
Vested and expected to vest	3,289,893
Exercisable	1,885,353
Weighted Average Exercise Price	'
Vested and expected to vest	$5.74
Exercisable	$5.74
Weighted Average Remaining Contractual Term (Years)	'
Vested and expected to vest	'6 years 10 months 13 days
Exercisable	'5 years 4 months 21 days
Aggregate Intrinsic Value (in Thousands)	'
Vested and expected to vest	$10,682
Exercisable	$6,380

Summarizes_Information_about_R

Summarizes Information about Restricted Stock Units Outstanding (Detail) (Restricted Stock Units (RSUs), USD $)	6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013
Restricted Stock Units (RSUs)	'
Number of shares	'
Vested and expected to vest	799,382
Weighted Average Grant Date Fair Value	'
Vested and expected to vest	$5.87
Weighted Average Remaining Contractual Term (Years)	'
Vested and expected to vest	'10 months 28 days
Aggregate Intrinsic Value	'
Vested and expected to vest	$6,947

Summarization_of_Companys_Stoc

Summarization of Company's Stock Appreciation Unit Activity (Detail) (Stock Appreciation Rights (SARs), USD $)	1 Months Ended	6 Months Ended
	Jun. 11, 2013	Jun. 30, 2013
Stock Appreciation Rights (SARs)	'	'
Number of shares	'	'
Beginning Balance	'	212,534
Granted	250,000	250,000
Forfeited	'	-14,244
Exercised/Converted	'	-5,746
Ending Balance	'	442,544
Weighted-Average Exercise Price	'	'
Beginning Balance	'	$7.07
Granted	'	$5.11
Forfeited	'	$8.28
Exercised	'	$4.42
Ending Balance	'	$5.96

Summary_of_Information_about_S

Summary of Information about Stock Appreciation Units Outstanding (Detail) (Stock Appreciation Rights (SARs), USD $)	6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013
Stock Appreciation Rights (SARs)	'
Number of Units	'
Vested and expected to vest	337,924
Exercisable	173,824
Weighted Average Exercise Price	'
Vested and expected to vest	$6.22
Exercisable	$6.81
Weighted Average Remaining Contractual Term	'
Vested and expected to vest	'7 years 5 months 5 days
Exercisable	'5 years 9 months 11 days
Aggregate Intrinsic Value	'
Vested and expected to vest	$1,033
Exercisable	$496

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

6 Months Ended

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Dec. 31, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Dec. 31, 2012

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2013

Apr. 27, 2012

Apr. 27, 2012

Apr. 27, 2012

Apr. 27, 2012

Apr. 27, 2012

Jun. 30, 2013

Apr. 27, 2012

Restricted Stock Units (RSUs)

Restricted Stock Units (RSUs)

Restricted Stock Units (RSUs)

Restricted Stock Units (RSUs)

Stock Appreciation Rights (SARs)

Stock Appreciation Rights (SARs)

Stock Appreciation Rights (SARs)

Stock Appreciation Rights (SARs)

Equity Incentive Programs

Equity Incentive Programs

Penalty Payment Derivative

Minimum

Embedded Derivative Financial Instruments

Private Placement

Private Placement

Private Placement

Private Placement

Private Placement

Private Placement

Private Placement

Penalty Payment Derivative

Performance Guarantee

Performance Guarantee

Minimum

Minimum

Minimum

Embedded Derivative Financial Instruments

General Working Capital And Research And Development Expenditures

Performance Guarantee

July 31, 2014 to March 31, 2015

Capital Additions

Class Of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock Issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,970,000

'

'

'

'

'

'

Common Stock Issue Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$8

'

'

'

'

'

'

Proceeds from issuance of common stock, gross amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$39,800,000

'

'

'

'

'

'

Common Stock Transfer Restriction Period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

Contractual obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,000,000

15,000,000

'

15,000,000

'

5,000,000

Percentage of research and development expenditure that must be spent inside Russia

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80.00%

'

'

'

Expected aggregate revenue from sales of its products in the Russian Federation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26,800,000

'

Investment obligation achievement date intended

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Mar-15

'

'

'

'

'

'

Other noncurrent liabilities

138,000

'

138,000

'

138,000

'

'

'

'

'

'

'

'

'

'

138,000

'

'

'

'

'

'

'

'

'

Additional paid-in capital

443,157,000

'

443,157,000

'

438,858,000

'

'

'

'

'

'

'

'

'

'

'

'

4,862,000

'

'

'

'

'

'

'

Targeted expansion completion date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31-Jul-14

'

'

'

'

'

'

Accumulated deficit subject to restriction

'

'

'

'

6,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated profits

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

Shares increased for issuance

'

'

2,569,115

'

'

'

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

Shares of common stock granted

'

'

1,164,130

'

'

'

'

'

'

'

'

'

'

1,325,000

'

'

'

'

'

'

'

'

'

'

'

Intrinsic value of options exercised

236,000

26,000

253,000

40,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intrinsic value of units exercised

'

'

'

'

'

$26,000

$0

$475,000

$0

$17,000

$1,000

$18,000

$10,000

'

'

'

'

'

'

'

'

'

'

'

'

StockBased_Compensation_Expens

Stock-Based Compensation Expense (Detail) (Stock Based Compensation Expense, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$1,473,000	$1,009,000	$2,675,000	$2,153,000
Cost of Goods Sold	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	131,000	136,000	374,000	324,000
Research and Development Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	600,000	395,000	1,018,000	864,000
Selling and Marketing Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	344,000	205,000	582,000	414,000
General and Administrative Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$398,000	$273,000	$701,000	$551,000

Summary_of_StockBased_Compensa

Summary of Stock-Based Compensation Expense Recognized for Stock Option (Detail) (Employee Stock Option, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$580,000	$529,000	$1,084,000	$1,067,000
Cost of Goods Sold	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	65,000	53,000	144,000	114,000
Research and Development Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	175,000	211,000	349,000	420,000
Selling and Marketing Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	135,000	90,000	213,000	184,000
General and Administrative Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$205,000	$175,000	$378,000	$349,000

Stock_Based_Compensation_Addit

Stock Based Compensation - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 11, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Stock options granted	'	'	'	1,164,130	'	'
Discounted Employee Stock Purchase Plan	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Percentage on the stock purchase right	'	'	'	15.00%	'	'
Call Option	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Percentage on the stock purchase right	'	'	'	85.00%	'	'
Put Option	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Percentage on the stock purchase right	'	'	'	15.00%	'	'
Employee Stock Option	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Fair Value of options granted	'	$3.96	$2.89	$3.93	$3.20	'
Unrecognized stock-based compensation expense	'	$6,500,000	'	$6,500,000	'	'
Remaining weighted-average period	'	'	'	'4 years 7 months 6 days	'	'
Allocated share based compensation expense	'	580,000	529,000	1,084,000	1,067,000	'
Performance Vested Stock Options	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Fair Value of options granted	'	$5.97	'	'	'	'
Stock options granted	1,060,000	'	'	'	'	'
Number of days for stock price to be traded above mentioned price	'20 days	'	'	'	'	'
Minimum closing stock price	$15	'	'	'	'	'
Stock options vesting period	'	'7 years	'	'	'	'
Allocated share based compensation expense	'	28,000	'	'	'	'
Stock Appreciation Rights (SARs)	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Unrecognized stock-based compensation expense	'	100,000	'	100,000	'	'
Remaining weighted-average period	'	'	'	'10 months 24 days	'	'
Number of days for stock price to be traded above mentioned price	'20 days	'	'	'	'	'
Minimum closing stock price	$15	'	'	'	'	'
Allocated share based compensation expense	'	194,000	-38,000	116,000	-59,000	'
Liability for Settlement	'	700,000	'	700,000	'	400,000
SARs granted	250,000	'	'	250,000	'	'
Fair Value of SARs granted	'	'	'	$5.11	'	'
Performance Accelerated Stock Appreciation Rights	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Allocated share based compensation expense	'	13,000	'	'	'	'
Fair Value of SARs granted	'	$6.47	'	'	'	'
Employees Stock Purchase Rights	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Unrecognized stock-based compensation expense	'	200,000	'	200,000	'	'
Allocated share based compensation expense	'	233,000	176,000	511,000	496,000	'
Restricted Stock Units (RSUs)	'	'	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'	'	'
Unrecognized stock-based compensation expense	'	3,000,000	'	3,000,000	'	'
Remaining weighted-average period	'	'	'	'1 year 8 months 12 days	'	'
Allocated share based compensation expense	'	$466,000	$342,000	$964,000	$649,000	'
SARs granted	'	'	'	31,040	'	'
Fair Value of SARs granted	'	$8.09	$4.50	$7.16	$5.99	'

Fair_Value_of_All_Employee_Sto

Fair Value of All Employee Stock Options (Detail) (Employee Stock Option)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Stock Option	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Method Used [Line Items]	'	'	'	'
Weighted-average expected term (years)	'6 years 3 months 18 days	'6 years 9 months 7 days	'6 years 4 months 2 days	'6 years 9 months 4 days
Weighted-average volatility	75.00%	71.00%	75.00%	71.00%
Risk-free interest rate Minimum	1.12%	1.52%	1.08%	1.35%
Risk-free interest rate Maximum	1.14%	1.83%	1.14%	1.83%
Expected dividends	0.00%	0.00%	0.00%	0.00%

Expense_Recognized_for_Stock_A

Expense Recognized for Stock Appreciation Units (Detail) (Stock Appreciation Rights (SARs), USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$194,000	($38,000)	$116,000	($59,000)
Cost of Goods Sold	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	-63,000	-35,000	-87,000	-40,000
Research and Development Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	147,000	1,000	115,000	-8,000
Selling and Marketing Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	47,000	-6,000	34,000	-10,000
General and Administrative Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$63,000	$2,000	$54,000	($1,000)

Estimated_Fair_Value_of_All_Em

Estimated Fair Value of All Employee Stock Appreciation Units Using Black-Scholes Valuation Model (Detail) (Stock Appreciation Rights (SARs))	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Stock Appreciation Rights (SARs)	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Method Used [Line Items]	'	'	'	'
Weighted-average expected term (years)	'2 years 3 months 29 days	'3 years 4 months 2 days	'2 years 5 months 19 days	'3 years 4 months 6 days
Weighted-average volatility	57.00%	68.00%	60.00%	69.00%
Risk-free interest rate Minimum	0.19%	0.37%	0.19%	0.37%
Risk-free interest rate Maximum	0.30%	0.64%	0.46%	1.04%
Expected dividends	0.00%	0.00%	0.00%	0.00%

Components_of_Expense_Relating

Components of Expense Relating to ESPP (Detail) (Employees Stock Purchase Rights, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$233,000	$176,000	$511,000	$496,000
Cost of Goods Sold	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	75,000	54,000	155,000	121,000
Research and Development Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	100,000	77,000	220,000	253,000
Selling and Marketing Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	34,000	25,000	72,000	65,000
General and Administrative Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$24,000	$20,000	$64,000	$57,000

Call_Option_and_Put_Option_wer

Call Option and Put Option were Valued Using Black-Scholes Option Pricing Model (Detail) (Employees Stock Purchase Rights)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employees Stock Purchase Rights	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Method Used [Line Items]	'	'	'	'
Weighted-average expected term (years)	'8 months 23 days	'9 months	'8 months 23 days	'9 months
Weighted-average volatility	48.00%	71.00%	48.00%	71.00%
Risk-free interest rate Minimum	0.09%	0.04%	0.09%	0.04%
Risk-free interest rate Maximum	0.16%	0.15%	0.16%	0.15%
Expected dividends	0.00%	0.00%	0.00%	0.00%

Recovered_Sheet1

Stock-based Compensation Expense Recognized for Restricted Stock Units (Detail) (Restricted Stock Units (RSUs), USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$466,000	$342,000	$964,000	$649,000
Cost of Goods Sold	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	54,000	64,000	162,000	129,000
Research and Development Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	178,000	106,000	334,000	199,000
Selling and Marketing Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	128,000	96,000	263,000	175,000
General and Administrative Expense	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Allocated share based compensation expense	$106,000	$76,000	$205,000	$146,000

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Taxes [Line Items]	'	'	'	'
Benefit (provision) for income taxes	$90	($377)	($93)	($317)
Subsidiaries	'	'	'	'
Income Taxes [Line Items]	'	'	'	'
Statutory Tax Rate	'	'	25.00%	'
Effective income tax rate	'	'	15.00%	'

Income_Tax_Expense_Benefit_and

Income Tax Expense Benefit and Effective Tax Rate (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Tax Expense Benefit [Line Items]	'	'	'	'
Benefit (provision) for income taxes	$90	($377)	($93)	($317)

Pension_Additional_Information

Pension - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Mar. 29, 2013	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2013
			CompensationPlan	Subsequent Event	Lapis Semiconductor Co Ltd	Lapis Semiconductor Co Ltd
						Noncurrent Assets
Pension And Other Postretirement Benefits Disclosure [Line Items]	'	'	'	'	'	'
Number of Defined Benefit Pension Plans	'	'	2	'	'	'
Plan assets	'	'	'	'	'	$1,900,000
Pension liability	8,100,000	8,100,000	'	'	1,900,000	'
Expected amount of future benefit obligation	6,154,000	6,154,000	'	'	'	'
Net periodic pension costs	97,000	97,000	'	'	'	'
Defined benefit plan employer contribution	'	'	'	624,000	'	'
Contribution benefit paid	$139,000	'	'	'	'	'

Defined_Benefit_Plans_Anticipa

Defined Benefit Plans Anticipated Outflows (Detail) (USD $)	Jun. 30, 2013
In Thousands, unless otherwise specified
Defined Benefit Plan Estimated Future Benefits	'
2013 (remaining 6 months)	$102
2014	401
2015	193
2016	626
2017	843
Thereafter	3,989
Expected amount of future benefit obligation	$6,154

Net_Periodic_Pension_Costs_Det

Net Periodic Pension Costs (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Summary Of Components Of Net Periodic Benefit Cost And Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income [Line Items]	'	'
Service costs	$88,000	$88,000
Interest cost	20,000	20,000
Expected return on plan assets	-11,000	-11,000
Net periodic pension costs	$97,000	$97,000

Restructuring_Charges_Addition

Restructuring Charges - Additional Information (Detail) (USD $)	Jun. 30, 2013	Mar. 31, 2013	Mar. 31, 2013
In Millions, unless otherwise specified		Facility	Restructuring
Restructuring Cost And Reserve [Line Items]	'	'	'
Restructuring charges related to factory impairment	'	'	$0.30
Number of facilities closed	'	1	'
Restructuring Obligation	$0.30	'	'