Alliance Fiber Optic Products (AFOP) 10-K/A 2 May 16 2015 FY Annual report (amended) Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Mar. 03, 2016	Jun. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	ALLIANCE FIBER OPTIC PRODUCTS INC
Entity Central Index Key	1,122,342
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Amendment Flag	true
Amendment Description	Alliance Fiber Optic Products, Inc. is filing this Amendment No. 1, (the “Amended Report”), to our Annual Report on Form 10-K for the fiscal year ended December 31, 2015, filed with the Securities and Exchange Commission, or the SEC, on March 11, 2016, (the “Original Report”) in order to add certain information required by the following items of Form 10-K: Item Description ITEM 10. Directors, Executive Officers and Corporate Governance ITEM 11. Executive Compensation ITEM 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters ITEM 13. Certain Relationships and Related Transactions, and Director Independence ITEM 14. Principal Accounting Fees and Services We hereby amend Items 10, 11, 12, 13 and 14 of Part III of our Original Report by deleting the text of such Items 10, 11, 12, 13 and 14 in their entirety and replacing them with the information provided below under the respective headings. The Amended Report does not affect any other items in our Original Report. As a result of this amendment, we are also filing as exhibits to this Amended Report the certifications pursuant to section 302 of the Sarbanes-Oxley Act of 2002. Because no financial statements are contained in this Amended Report, we are not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. Except as otherwise expressly stated for the items amended in this Amended Report, this Amended Report continues to speak as of the date of the Original Report and we have not updated the disclosure contained herein to reflect events that have occurred since the filing of the Original Report. In addition, we have not updated the disclosure contained herein to reflect the impact of our proposed merger with a subsidiary of Corning Incorporate announced on April 7, 2016 on the compensation of our executive officers, including, without limitation, the vesting of equity awards. Accordingly, this Amended R
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 241,321,495
Entity Common Stock, Shares Outstanding		15,788,585
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	AFOP

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 6,157	$ 22,723
Short-term investments	17,831	31,857
Accounts receivable, net	12,547	10,806
Inventories, net	10,919	9,305
Deferred tax asset, net	3,848	3,690
Prepaid expenses and other current assets	2,121	2,077
Total current assets	53,423	80,458
Long-term investments	10,821	10,635
Property and equipment, net	16,183	13,868
Other assets	206	212
Total assets	80,633	105,173
Current liabilities:
Accounts payable	6,059	9,236
Accrued expenses and other current liabilities	9,510	8,699
Total current liabilities	15,569	17,935
Long-term liabilities:	2,194	978
Total liabilities	$ 17,763	$ 18,913
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, par value $0.001: 5,000,000 shares authorized; no shares issued and outstanding at December 31, 2015 and 2014, respectively
Common stock, par value $0.001: 100,000,000 shares authorized; 15,786,785 and 17,942,595 shares issued and outstanding at December 31, 2015 and 2014, respectively	$ 16	$ 18
Additional paid-in-capital	76,462	111,622
Accumulated deficit	(13,779)	(26,817)
Accumulated other comprehensive income	171	1,437
Total stockholders' equity	62,870	86,260
Total liabilities and stockholders' equity	$ 80,633	$ 105,173

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Consolidated Balance Sheets [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	15,786,785	17,942,595
Common stock, shares outstanding	15,786,785	17,942,595

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated Statements of Income and Comprehensive Income [Abstract]
Revenues	$ 81,189	$ 85,987	$ 76,070
Cost of revenues	48,154	51,770	46,952
Gross profit	33,035	34,217	29,118
Operating expenses:
Research and development	4,411	4,340	3,702
Selling, marketing and administrative	9,430	8,274	8,315
Total operating expenses	13,841	12,614	12,017
Income from operations	19,194	21,603	17,101
Interest and other income, net	623	769	708
Income before benefit (provision) for income taxes	19,817	22,372	17,809
Benefit (provision) for income taxes	(6,779)	(7,864)	999
Net income	13,038	14,508	18,808
Foreign currency translation adjustments	(1,275)	(961)	(392)
Net unrealized gain (loss) on investments available for sale	9	(15)	10
Comprehensive income	$ 11,772	$ 13,532	$ 18,426
Net income per share:
Basic	$ 0.74	$ 0.78	$ 1.06
Diluted	$ 0.73	$ 0.77	$ 1.02
Shares used in computing net income per share:
Basic	17,648	18,488	17,785
Diluted	17,945	18,935	18,481

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 13,038	$ 14,508	$ 18,808
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,731	2,799	2,175
Stock based compensation	2,936	2,160	1,917
Loss on disposal of property and equipment	8	3	107
Provision for (recovery of) inventory valuation	38	(30)	(84)
Deferred tax assets	(158)	2,346	(2,334)
Changes in assets and liabilities:
Accounts receivable	(1,300)	760	(3,520)
Inventories	(2,066)	1,355	(3,613)
Prepaid expenses and other current assets	(609)	(332)	(579)
Other assets	(1)	(14)	51
Accounts payable	(2,830)	(2,421)	5,066
Accrued expenses and other current liabilities	725	1,565	3,019
Long-term liabilities	1,554	378	(16)
Net cash provided by operating activities	14,066	23,077	20,997
Cash flows from investing activities:
Purchase of short-term investments	(57,752)	(35,438)	(21,492)
Proceeds from sales and maturities of short-term investments	71,055	31,643	21,908
Purchase of long-term investments	(186)	(182)	(179)
Purchase of property and equipment	(5,587)	(3,980)	(7,830)
Net cash provided by (used in) investing activities	7,530	(7,957)	(7,593)
Cash flows from financing activities:
Proceeds from issuance of common stock under ESPP	673	661	521
Proceeds from the exercise of stock options	669	607	5,239
Tax payments related to net share settlements of RSUs	732	501	(1,326)
Repurchase of common stock	$ (40,172)	(9,676)	(873)
Payment of dividends		(2,700)	(2,761)
Net cash (used in) provided by financing activities	$ (38,098)	(10,607)	800
Effect of exchange rate changes on cash and cash equivalents	(64)	(393)	(394)
Net (decrease) increase in cash and cash equivalents	(16,566)	4,120	13,810
Cash and cash equivalents at beginning of year	22,723	18,603	4,793
Cash and cash equivalents at end of year	6,157	22,723	18,603
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$ (3,385)	$ (1,092)	$ (433)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Deferred Stock-based Compensation [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]
Balance at Dec. 31, 2012	$ 60,031	$ 18	$ 109,485	$ 2,406	$ (54,672)	$ 2,794
Balance, shares at Dec. 31, 2012		17,265
Deferred stock-based compensation	1,917			1,917
Issuance of stock on exercise of options and RSUs	3,913		$ 5,239	$ (1,326)
Issuance of stock on exercise of options and RSUs, shares		1,210
Issuance of stock purchased through ESPP	521		$ 521
Issuance of stock purchased through ESPP, shares		92
Issuance of cash dividends	(2,761)				$ (2,761)
Repurchase of common stock	(873)		$ (873)
Repurchase of common stock, shares		(159)
Net income	18,808				$ 18,808
Other comprehensive loss	(382)					$ (382)
Balance at Dec. 31, 2013	81,174	$ 18	$ 114,372	$ 2,997	$ (38,625)	$ 2,412
Balance, shares at Dec. 31, 2013		18,408
Deferred stock-based compensation	2,160			2,160
Issuance of stock on exercise of options and RSUs	1,108		$ 2,491	$ (1,383)
Issuance of stock on exercise of options and RSUs, shares		224
Issuance of stock purchased through ESPP	661		$ 661
Issuance of stock purchased through ESPP, shares		51
Issuance of cash dividends	(2,700)				$ (2,700)
Repurchase of common stock	(9,676)		$ (9,676)
Repurchase of common stock, shares		(740)
Net income	14,508				$ 14,508
Other comprehensive loss	(975)					$ (975)
Balance at Dec. 31, 2014	86,260	$ 18	$ 107,848	$ 3,774	$ (26,817)	$ 1,437
Balance, shares at Dec. 31, 2014		17,943
Deferred stock-based compensation	2,936			2,936
Issuance of stock on exercise of options and RSUs	1,401		$ 4,293	$ (2,892)
Issuance of stock on exercise of options and RSUs, shares		295
Issuance of stock purchased through ESPP	673		673
Issuance of stock purchased through ESPP, shares		60
Repurchase of common stock	(40,172)	$ (2)	$ (40,170)
Repurchase of common stock, shares		(2,511)
Net income	13,038				$ 13,038
Other comprehensive loss	(1,266)					$ (1,266)
Balance at Dec. 31, 2015	$ 62,870	$ 16	$ 72,644	$ 3,818	$ (13,779)	$ 171
Balance, shares at Dec. 31, 2015		15,787

The Company and summary of sign

The Company and summary of significant accounting policies	12 Months Ended
	Dec. 31, 2015
The Company and summary of significant accounting policies [Abstract]
The Company and summary of significant accounting policies	1. The Company and summary of significant accounting policies The Company Alliance Fiber Optic Products, Inc. (the “Company”) was incorporated in California on December 12, 1995 and reincorporated in Delaware on October 19, 2000. The Company designs, manufactures and markets fiber optic components for communications equipment manufacturers. The Company's headquarters are located in Sunnyvale, California, and it has operations in Taiwan and China. Use of estimates The preparation of consolidated financial statements in accordance with accounting principles generally accepted in the United States of America 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates involve those required in the assessment of the allowances for sales returns, doubtful accounts, potential excess or obsolete inventory, the valuation of stock-based compensation and the valuation of deferred tax assets. Actual results could differ from those estimates. Basis of presentation The consolidated financial statements include the accounts of the Company and its subsidiaries. All material intercompany accounts and transactions have been eliminated in consolidation. Foreign currency translation The Company's operations through foreign subsidiaries use the local currency as their functional currency. All assets and liabilities of the subsidiaries are translated at rates of exchange as of the balance sheet date. Revenues and expenses are translated at the average rate of exchange for the period. Gains and losses resulting from foreign currency translation are recorded as a separate component of other comprehensive income in stockholders' equity. Foreign currency transaction gains and losses are recorded in interest and other income and have not been material. Cash, cash equivalents, short-term and long-term investments The Company considers all highly liquid instruments with a maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents consist of cash deposited in money market, certificate of deposit, and checking accounts. The Company accounts for its investments under the provisions of Accounting Standards Codification (“ASC”) 320 “Investments - Debt and Equity Securities.” Investments in highly liquid financial instruments with remaining maturities greater than three months and maturities of less than one year are classified as short-term investments. Financial instruments with remaining maturities greater than one year are classified as long-term investments. All investments are classified as available-for-sale and are reported at fair value using the specific identification method with net unrealized gain/(loss) reported, net of tax as other comprehensive gain/(loss) in stockholders' equity. The fair value of the Company's available-for-sale securities are based on quoted market prices or other methodologies for those investments with no quoted market prices at the balance sheet dates. The Company's financial instruments also include accounts receivable, accounts payable and are carried at cost, which approximates the fair value of these instruments. Fair value of financial instruments The Company applies fair value accounting for all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities, which are required to be recorded at fair value, the Company considers the principal or most advantageous market in which the Company would transact and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as risks inherent in valuation techniques, transfer restrictions and credit risk. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1 – Quoted prices in active markets for identical assets or liabilities. Level 2 – Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 – Inputs that are generally unobservable and typically reflect management's estimate of assumptions that market participants would use in pricing the asset or liability. The Company's valuation techniques used to measure the fair value of money market funds and certain marketable equity securities were derived from quoted prices in active markets for identical assets or liabilities. In accordance with the fair value accounting requirements, companies may choose to measure eligible financial instruments and certain other items at fair value. The Company has not elected the fair value option for any eligible financial instruments. Allowance for doubtful accounts The Company performs periodic credit evaluations of its customers' financial condition. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability or unwillingness of customers to make required payments. When the Company becomes aware that a specific customer is unable to meet its financial obligations, for example, as a result of bankruptcy or deterioration in the customer's operating results or financial position, the Company records a specific allowance to reflect the level of credit risk in the customer's outstanding receivable balance. The Company is not able to predict changes in the financial condition of customers, and if circumstances related to customers deteriorate, estimates of the recoverability of trade receivables could be materially affected and the Company may be required to record additional allowances. Alternatively, if the Company provides more allowances than the Company needs, the Company may reverse a portion of such provisions in future periods based on actual collection experience. In addition, the Company records additional allowances based on historical sales returns as explained under the revenue recognition section. Inventories, net Inventories are stated at the lower of cost or market, with cost being determined using standard cost, which approximates actual cost on a first-in, first-out basis. Market value is determined as the lower of replacement cost or net realizable value. We regularly review our inventories for obsolescence and reserves are established when necessary. Provisions are made for excess and obsolete inventory based on historical usage and management's estimates of future demand. Inventory reserves, once established, are only reversed upon sale or disposition of related inventory. Inventory reserves were $ 1.4 2.4 2.4 Property and equipment, net Property and equipment is stated at cost less accumulated depreciation and impairment charges. Depreciation is computed using the straight-line method based on estimated useful lives of 25 two 10 five two four 2.7 2.8 2.2 Impairment of Long-lived Assets The Company reviews its long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate. Each impairment test is based on a comparison of the undiscounted future cash flows to the recorded value of the asset. If impairment is indicated, the asset is written down to its estimated fair value based on fair market values. Revenue recognition The Company recognizes revenue upon shipment of its products to its customers, provided that the Company has received a purchase order, the price is fixed, collection of the resulting receivable is reasonably assured and transfer of title and risk of loss has occurred. Subsequent to the sale of its products, the Company has no obligation to provide any modification or customization upgrades, enhancements or post contract customer support. Allowances are provided for estimated returns. A provision for estimated sales return allowances is recorded at the time revenue is recognized based on historical returns, current economic trends and changes in customer demand. Such allowances are adjusted periodically to reflect actual and anticipated experience. Such adjustments, which are recorded against revenue in the period, have generally not been material. The Company accrued $ 0.07 0.08 0.06 Shipping and handling expenses Shipping and handling expenses are included in cost of revenue. Research and development expenses Research and development costs are charged to expense as incurred. Advertising expenses Advertising costs are charged to expense as incurred and have not been material in 2015, 2014 and 2013. Sales taxes The Company accounts for taxes charged to its customers and collected on behalf of taxing authorities on a net basis. Income taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes, which requires that the Company recognize deferred tax liabilities and assets based on the differences between the financial statement carrying amounts and the tax basis of assets and liabilities, using enacted tax rates in effect in the years the differences are expected to reverse. Deferred income tax benefit (expense) results from the change in net deferred tax assets or deferred tax liabilities. A valuation allowance is recorded when it is more likely than not that some or all deferred tax assets will not be realized. The Company applies ASC 740 which utilizes a two-step approach wherein a tax benefit is recognized if a position is more-likely-than-not to be sustained. The amount of the benefit is then measured to be the highest tax benefit that is greater than 50% likely to be realized. The Company has elected to include interest and penalties related to its tax contingencies in income tax expense. The Company files a U.S. federal tax return and returns with the State of California and the State of Georgia. The Company has determined that its major tax jurisdictions are the United States, California, Georgia, Taiwan and China. The Company follows the provisions of ASC 740-10-25, Income Taxes: Recognition ("ASC 740-10-25"). The total amount of unrecognized tax benefits as of December 31, 2015, 2014 and 2013 were $1.1 million, $1.1 million and $0.7 million respectively. The Company does not anticipate any significant change to its unrecognized tax positions over the next 12 months. The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate were $ 0.7 0.7 0.3 A reconciliation of the beginning and ending balances of the total amounts of unrecognized tax benefits for the years ended December 31, 2015 and 2014 are as follows: Balance at December 31, 2013 $ 683 Additions for tax positions of the prior year 280 Additions for tax positions of the current year 117 Balance at December 31, 2014 $ 1,080 Additions for tax positions of the current year 10 Reductions for tax positions of the prior year (18 ) Balance at December 31, 2015 $ 1,072 The Company recognizes interest and penalties accrued related to unrecognized tax benefits in the provision for income taxes. During the years ended December 31, 2015, 2014 and 2013, the Company recognized approximately $ 0.2 0.1 0.1 Deferred tax assets pertaining to windfall tax benefits on the exercise of share awards and the corresponding credit to additional paid-in capital are recorded if the related tax deduction reduces tax payable. The Company has elected the “with-and-without approach excluding indirect tax effects” regarding ordering of windfall tax benefits to determine whether the windfall tax benefit reduced taxes payable in the current year. Under this approach, the windfall tax benefits would be recognized in additional paid-in capital only if an incremental tax benefit is realized after considering all other tax benefits presently available to the Company without considering available income tax credits. The Company's deferred tax assets as of December 31, 2015, 2014 and 2013 do not include $ 0.7 0.6 1.8 The Company files income tax returns in the United States (federal), Taiwan, China and in various state and local jurisdictions. The Company is no longer subject to federal income tax examinations by tax authorities for years prior to 2012, California State and China income tax examination by tax authorities for years prior to 2011, and Taiwan income tax examinations by tax authorities for years prior to 2009. The Company is not currently under examination by any federal, state or local jurisdiction. It is not anticipated that unrecognized tax benefits will significantly change in the next twelve months. Stock-based compensation The Company estimates the fair value of the share-based payment awards on the date of grant using an option pricing model. The value of awards that are ultimately expected to vest is recognized as an expense over the requisite employee service period. Comprehensive income Comprehensive income is defined as the change in equity of a company from transactions and other events and circumstances excluding transactions resulting from investments from owners and distributions to owners. Accumulated other comprehensive income consists of cumulative translation adjustments and unrealized gains on short-term investments and is disclosed in the consolidated statements of stockholders' equity. Recent accounting pr onouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2016-02, "Leases (Topic 842)". The amendments under this pronouncement will change the way all leases with a duration of one year of more are treated. Under this guidance, lessees will be required to capitalize virtually all leases on the balance sheet as a right-of-use asset and an associated financing lease liability or capital lease liability. The right-of-use asset represents the lessee's right to use, or control the use of, a specified asset for the specified lease term. The lease liability represents the lessee's obligation to make lease payments arising from the lease, measured on a discounted basis. Based on certain characteristics, leases are classified as financing leases or operating leases. Financing lease liabilities, those that contain provisions similar to capitalized leases, are amortized like capital leases are under current accounting, as amortization expense and interest expense in the statement of operations. Operating lease liabilities are amortized on a straight-line basis over the life of the lease as lease expense in the statement of operations. This update is effective for annual reporting periods, and interim periods within those reporting periods, beginning after December 15, 2018. The Company is currently evaluating the impact this standard will have on its policies and procedures pertaining to its existing and future lease arrangements, disclosure requirements and on its consolidated financial statements. In July 2015, FASB issued new accounting guidance on simplifying the measurement of inventory which requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. Prior to the issuance of the standard, inventory was measured at the lower of cost or market (where market was defined as replacement cost, with a ceiling of net realizable value and floor of net realizable value less a normal profit margin). The accounting guidance is effective for annual reporting periods (including interim periods within those periods) beginning after December 15, 2016. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial statements. In January 2015, the FASB issued guidance which eliminates the concept of extraordinary items in an entity's income statement. The changes in ASU 2015-01 are effective for fiscal years beginning after December 15, 2015 and interim periods within those fiscal years. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In August 2014, FASB issued a new accounting standard which requires management to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern for each annual and interim reporting period and to provide related footnote disclosures in certain circumstances. The accounting standard is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Early adoption is permitted. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In May 2014, the FASB issued a new financial accounting standard which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The accounting standard is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Early adoption is not permitted. The Company is currently evaluating the impact of this accounting standard on its consolidated financial statements.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity [Abstract]
Stockholders' Equity	2. Stockholders' Equity Preferred Stock. Common Stock. 20,000,000 2 9,061,568 18,123,136 Stock Repurchase Programs. 25.0 35 nt of common stock in any period and the program may be modified or suspended at any time. The duration of the repurchase program is open-ended. For the year ended December 31, 2015, an aggregate of 2,196,632 On October 29, 2014, the Company announced a program to repurchase up to $ 15 313,478 740,190 On November 30, 2011, the Company announced a program to repurchase up to $ 6 1,081 158,798 Dividends. 0.15 0.15 Stockholder Rights Plan. one one five five one no 15 15 1 15 10 which would result in any person, entity or group of affiliated or associated persons and/or entities becoming an Acquiring Person (unless such tender offer or exchange offer is a Permitted Offer as defined in the Restated Rights Plan). As soon as practicable following the Distribution Date, separate certificates evidencing the Rights ("Rights Certificates") will be mailed to holders of record of the common stock as of the close of business on the Distribution Date, and the separate Rights Certificate s alone will evidence the Rights The Rights are not exercisable until the Distribution Date. The Rights will expire on the earliest of (i) May 29, 2021, (ii) consummation of a merger transaction with a person, entity or group who (x) acquired common stock pursuant to a Permitted Offer and (y) is offering in the merger the same price per share and form of consideration paid in the Permitted Offer or (iii) redemption or exchange of the Rights by the Company as described in the Amended Rights Plan.

Stock-based Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2015
Stock-based Compensation [Abstract]
Stock-based Compensation	3. Stock-based Compensation ASC 718 - Compensation - Stock Compensation, requires companies to record compensation expense for stock options measured at fair value on the date of grant, using an option pricing model. The Company adopted the Black Scholes valuation model for stock options granted and stock purchased pursuant to the ESPP after June 30, 2010. Fair value for stock options was estimated at the date of grant using the Black-Scholes option pricing model, with the following weighted average assumptions: Years Ended December 31, 2015 2014 2013 Risk-free interest rate 0.96 1.02 0.49 Time to maturity (in years) 3 4 4 Annualized volatility 57.59 69.67 30.30 Expected dividend rate 0.00 1.20 0.98 In November 2000, the Company adopted the 2000 Stock Incentive Plan (the “Stock Incentive Plan”) under which 300,000 900,000 680,000 5 The plan was amended and restated in 2010 to, among other things, extend the term under which awards may be granted under the plan until March 17, 2020, eliminate a 10 Under the Stock Incentive Plan, participants may be granted RSUs, representing an unfunded, unsecured right to receive common stock on the date specified in the recipient's award. The RSUs granted under the plan generally vest over a term of two five During the year ended December 31, 2011, the Company granted 546,000 2.5 0.4 0.4 0.1 one During the year ended December 31, 2013, the Company granted 342,000 2.3 0.5 0.8 0.1 one During the year ended December 31, 2015, the Company granted 302,000 5.3 1.1 4.2 0.7 3.5 Options granted under the Stock Incentive Plan generally vest over four ten four The following information relates to stock option activity for the year ended December 31, 2015: Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Options Shares Price Life Value Outstanding at December 31, 2014 693,100 $ 9.08 Granted 58,000 14.74 Exercised (101,100 ) 6.62 Forfeited (78,400 ) 11.88 Outstanding at December 31, 2015 571,600 $ 9.71 7.75 $ 3,154,415 Vested and expected to vest at December 31, 2015 496,428 $ 9.60 7.69 $ 2,796,239 Exercisable at December 31, 2015 164,167 $ 6.95 6.27 $ 1,356,896 The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between the closing stock price on the last trading day of the fourth quarter of fiscal 2015 and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on December 31, 2015. This amount changes based on the fair market value of the Company's common stock. The total intrinsic value of options exercised for the years ended December 31, 2015, 2014 and 2013 was $ 1.1 1.3 12.8 Options to purchase 58,000 1.6 four The dividend rate was 0 0.15 Information relating to stock options outstanding at December 31, 2015 is as follows: Options Outstanding Options Exercisable Weighted Average Weighted Weighted Range of Number Remaining Average Number Average Exercise Outstanding Contractual Exercise Exercisable Exercise Price As of 12/31/15 Term Price As of 12/31/15 Price $3.88 $4.80 111,700 6.22 $ 4.28 85,000 $ 4.41 $5.05 $6.03 22,500 1.46 $ 5.32 22,500 $ 5.32 $6.87 $6.87 96,000 7.29 $ 6.87 13,800 $ 6.87 $8.17 $12.32 82,000 8.51 $ 11.22 600 $ 8.17 $12.50 $12.50 201,400 8.19 $ 12.50 37,600 $ 12.50 $13.61 $18.36 58,000 11.25 $ 14.74 4,667 $ 16.32 571,600 7.75 $ 9.71 164,167 $ 6.95 Options exercisable as of December 31, 2015 and 2014 were 164,167 118,161 6.95 4.75 There were 487,824 Employee Stock Purchase Plan In November 2000, the Company adopted its ESPP. The Company reserved 600,000 600,000 1 400,000 85 59,781 50,759 There were 208,360 The following information relates to the ESPP: 2015 2014 2013 Weighted average fair value per share of shares purchased $ 11.26 $ 13.01 $ 5.66 Total compensation expense for ESPP $ 324,250 $ 461,980 $ 409,079 Total amount of cash received from the purchase of stock through ESPP $ 672,899 $ 660,621 $ 521,308 Total intrinsic value of ESPP stock purchased at December 31 $ 233,381 $ 75,892 $ 863,120 The following table summarizes employee stock-based compensation expense resulting from stock options, RSUs, and the ESPP (in thousands): Years Ended December 31, 2015 2014 2013 Included in cost of revenue $ 513 $ 491 $ 373 Included in operating expenses: Research and development 196 234 232 Sales, marketing and administrative 2,227 1,435 1,312 Total 2,423 1,669 1,544 Total stock-based compensation expenses $ 2,936 $ 2,160 $ 1,917

Net Income per Share

Net Income per Share	12 Months Ended
	Dec. 31, 2015
Net Income Per Share [Abstract]
Net Income Per Share	4. Net Income per Share Basic net income per share is computed by dividing net income for the period by the weighted average number of shares of common stock outstanding during the period. Diluted net income per share is computed by dividing the net income for the period by the combination of dilutive common share equivalents, comprised of shares issuable under the Company's stock-based compensation plans, and the weighted average number of common shares outstanding during the period. The following table sets forth the computation of basic and diluted net income per share for the years indicated (in thousands, except per share amounts): Years Ended December 31, 2015 2014 2013 Numerator: Net income $ 13,038 $ 14,508 $ 18,808 Denominator: Shares used in computing net income per share: Weighted average of common shares outstanding Basic 17,648 18,488 17,785 Diluted 17,945 18,935 18,481 Net income per share: Basic $ 0.74 $ 0.78 $ 1.06 Diluted $ 0.73 $ 0.77 $ 1.02 As of December 31, 2015, options to purchase 12,000

Balance Sheet Components

Balance Sheet Components	12 Months Ended
	Dec. 31, 2015
Balance Sheet Components [Abstract]
Balance Sheet Components	5. Balance Sheet Components (in thousands) December 31, 2015 2014 Cash and cash equivalents: Cash $ 5,876 $ 18,653 Money market instruments and funds 281 4,070 $ 6,157 $ 22,723 Accounts receivable, net: Accounts receivable $ 12,668 $ 10,927 Less: Allowance for doubtful accounts and sales returns (121 ) (121 ) $ 12,547 $ 10,806 Allowance for doubtful accounts and sales returns: Balance at beginning of year $ 121 $ 121 Utilized - - Balance at end of year $ 121 $ 121 Inventories: Finished goods $ 3,958 $ 3,191 Work-in-process 4,705 3,430 Raw materials 3,667 5,052 $ 12,330 $ 11,673 Inventory reserves: Finished goods $ 520 $ 647 Work-in-process 296 460 Raw materials $ 595 $ 1,261 $ 1,411 $ 2,368 Accrued expenses and other current liabilities: Compensation costs $ 4,325 $ 5,016 Professional fees 24 55 Outside commissions 146 143 Royalties 82 135 ESPP 147 138 Deferred rent 29 33 Warranty 70 82 Operating related (Taiwan and China) 483 417 Income tax 2,888 2,204 Stock buyback 851 - Other 465 476 $ 9,510 $ 8,699 Long-term liabilities: Income tax payable $ 1,581 $ 376 Accrued pension liability (Taiwan) 613 602 $ 2,194 $ 978 Accumulated other comprehensive Income: Cumulative translation adjustments $ 172 $ 1,447 Unrealized loss on short-term investments (1 ) (10 ) $ 171 $ 1,437

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2015
Property and Equipment, Net [Abstract]
Property and Equipment, Net	6 December 31, (in thousands) 2015 2014 Machinery and equipment $ 22,116 $ 20,315 Furniture and fixtures 883 686 Leasehold improvements 4,373 2,655 Building and equipment prepayments 4,283 3,804 $ 31,655 $ 27,460 Less: Accumulated depreciation and amortization (15,472 ) (13,592 ) Total property and equipment, net $ 16,183 $ 13,868

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Taxes [Abstract]
Income Taxes	7. Income Taxes The components of income before income taxes are as follows (in thousands): Years Ended December 31, 2015 2014 2013 Income subject to domestic income taxes only $ 1,569 $ 8,608 $ 17,645 Income subject to foreign income taxes only 18,248 13,764 164 $ 19,817 $ 22,372 $ 17,809 The income tax provision (benefit) is composed of the following (in thousands): Years Ended December 31, Current: 2015 2014 2013 Federal $ 1,323 $ 2,663 $ 382 State 171 75 1 Foreign 5,484 2,403 953 6,978 5,141 1,336 Deferred: Federal (36 ) 1,891 (1,450 ) State (25 ) 763 (232 ) Foreign (138 ) 69 (653 ) (199 ) 2,723 (2,335 ) Total provision (benefit) for income taxes $ 6,779 $ 7,864 $ (999 ) Deferred tax assets and liabilities consist of the following (in thousands): Years Ended December 31, 2015 2014 2013 Deferred tax assets - current: Net operating loss carryforwards $ 744 $ 620 $ 3,501 Windfall tax benefit carryforwards (744 ) (620 ) (580 ) Federal/State credit carryforwards 2,692 2,536 2,260 Depreciation and amortization 146 24 6 Stock compensation 650 326 - Accrued liabilities and allowances 1,098 1,508 1,532 Unrecognized tax benefits (738 ) (704 ) (683 ) Total deferred tax assets $ 3,848 $ 3,690 $ 6,036 The following is a reconciliation of the effective tax rates and the United States statutory federal income tax rate: Years Ended December 31, 2015 2014 2013 Tax at federal statutory rate 34.0 % 34.0 % 34.0 % State, net of federal benefit 4.5 5.8 5.8 Effect of permanent differences (1.8 ) 3.8 1.1 Stock and deferred compensation 1.1 0.9 (7.2 ) Net operating loss carryover 0.4 5.6 - Foreign tax differential (9.3 ) (13.1 ) 0.1 Minimum tax - 0.6 1.7 Income tax credits (1.3 ) (1.9 ) (0.9 ) Valuation allowance - - (47.4 ) Stock compensation windfall 7.0 2.1 2.3 Other (0.3 ) (2.6 ) 4.9 Provision (benefit) for taxes 34.3 % 35.2 % (5.6 )% The Company's effective tax rates in comparison to the U.S. statutory rates in 2015 and 2014 reflect differentials between the U.S. statutory rate and the foreign tax rates applied to the earnings of the Company's foreign subsidiaries. The foreign tax differential accounted for a 9.3% and 13.1% decrease in the Company's effective tax rates in 2015 and 2014, respectively. The Company's effective tax rate was below the U.S. statutory rate in 2013 mainly because of the tax benefit arising from a reduction in the valuation allowance. The valuation allowance accounted for a 47.4% decrease in the Company's effective tax rate in 2013. The net operating loss carryforward that resulted in 0.4% and 5.6% of increase in the Company's effective tax rate in 2015 and 2014, respectively, was related to true-ups and amended prior years' returns. The Company is subject to income tax in both the United States and various foreign jurisdictions. The effective tax rate is also affected by the taxable earnings in foreign jurisdictions with various different statutory tax rates. The Company reviews its expected annual effective income tax rates and makes changes on a quarterly basis as necessary based on certain factors such as forecasted annual operating income and valuation of deferred tax assets. As of December 31, 2015, the Company has a net operating loss carryforward of approximately $ 1.0 6.9 As of December 31, 2015, the Company has research credit carryforwards of approximately $ 1.4 1.0 Internal Revenue Code Section 382 limits the use of net operating loss and tax credit carryforwards in certain situations where changes occur in the stock ownership of a company. In the event the Company has had a change in ownership, utilization of the carryforwards could be restricted. The Company has concluded no change in stock ownership has occurred during 2015.

Concentrations of Certain Risks

Concentrations of Certain Risks	12 Months Ended
	Dec. 31, 2015
Concentrations of Certain Risks [Abstract]
Concentrations of Certain Risks	8. Concentrations of Certain Risks Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, short-term and long-term investments and accounts receivable. The Company limits the amount of deposits in any one financial institution and any one financial instrument. The Company invests its excess cash principally in certificates of deposit, debt instruments issued by high-credit quality financial institutions and corporations and money market accounts with financial institutions in the United States. The Company performs periodic credit evaluations of its customers' financial condition, and limits the amount of credit extended when deemed necessary, but generally does not require collateral. One customer accounted for 15.1 26.9 2014, respectively. One customer accounted for 31.0 39.6 and 35.3 , respectively Certain components used in manufacturing the Company's products have relatively few alternative sources of supply, and establishing additional or replacement suppliers for such components may not be accomplished quickly.

Geographic Segment Information

Geographic Segment Information	12 Months Ended
	Dec. 31, 2015
Geographic Segment Information [Abstract]
Geographic Segment Information	9. Geographic Segment Information The Company operates in a single industry segment. This industry segment is characterized by rapid technological change and significant competition. The following is a summary of the Company's revenues generated by geographic segments, revenues generated by product lines and identifiable assets located in these segments (in thousands): Years Ended December 31, 2015 2014 2013 Revenues North America $ 45,033 $ 52,101 $ 42,815 Europe 17,513 18,102 15,604 Asia 18,643 15,784 17,651 $ 81,189 $ 85,987 $ 76,070 Years Ended December 31, 2015 2014 2013 Revenues Connectivity Products $ 61,282 $ 64,791 $ 57,660 Optical Passive Products 19,907 21,196 18,410 $ 81,189 $ 85,987 $ 76,070 Years Ended December 31, 2015 2014 Property and Equipment, net United States $ 191 $ 185 Taiwan 9,016 8,568 China 6,976 5,115 $ 16,183 $ 13,868

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies Litigation From time to time, the Company may be involved in litigation in the normal course of business. As of the date of these financial statements, the Company is not aware of any material legal proceedings pending or threatened against the Company. Off-Balance Sheet Arrangements The Company had no off-balance sheet arrangements as of December 31, 2015 or 2014, respectively. Indemnification and Product Warranty The Company indemnifies certain customers, suppliers and subcontractors for attorney fees and damages and costs awarded against these parties in certain circumstances in which products are alleged to infringe third party intellectual property rights, including patents, trade secrets, trademarks or copyrights. In all cases, there are limits on and exceptions to the potential liability for indemnification relating to intellectual property infringement claims. The Company cannot estimate the amount of potential future payments, if any, that it might be required to make as a result of these agreements. As of December 31, 2015, the Company has not paid any claim or been required to defend any action related to indemnification obligations, and accordingly, the Company has not accrued any amounts for such indemnification obligations. However, the Company may record charges in the future as a result of these indemnification obligations. The Company generally warrants products against defects in materials and workmanship and non-conformance to specifications for varying lengths of time. If there is a material increase in customer claims compared with historical experience, or if costs of servicing warranty claims are greater than expected, the Company may record a charge against cost of revenues. The Company accrued $ 0.07 0.08 0.06 Operating Leases The Company leases certain office space under long-term operating leases expiring at various dates through 2019. Total rent expense under these operating leases was approximately $ 0.9 0.7 Total future minimum lease payments under operating leases as of December 31, 2015 are summarized below (in thousands): Years ending December 31, 2016 $ 1,048 2017 655 2018 428 2019 376 Total $ 2,507

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	11. Related Party Transactions As of December 31, 2015, and based on information filed with the Securities and Exchange Commission in February 2016, Foxconn Holding Limited (“Foxconn”) and Hon Hai Precision Industry Co. Ltd. (“Hon Hai”) held 15 Sales of products to Hon Hai were $ 0.04 0.07 0.01 No 0.05 0.01 Purchases of raw materials from Hon Hai were $ 2.0 1.8 1.5 0.3 0.4 0.3

Fair Value of Financial instrum

Fair Value of Financial instruments	12 Months Ended
	Dec. 31, 2015
Fair Value of Financial instruments [Abstract]
Fair Value of Financial instruments	12. Fair Value of Financial instruments U.S. GAAP defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers the principal or most advantageous market in which the Company would transact a purchase or sale and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability. The Company uses a fair value hierarchy established by U.S. GAAP that established a three-tiered fair value hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable to prioritize inputs used to measure fair value. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company's market assumptions. A financial instrument's categorization within the fair value hierarchy is based upon the lowest level of input that is available and significant to the fair value measurement. Those tiers are defined as follows: Level 1 — inputs are quoted prices in active markets for identical assets or liabilities. Level 2 — inputs other than quoted prices included within Level 1 that are observable, either directly or indirectly. Level 3 — inputs are unobservable and shall be used to the extent that observable inputs are not available in the overall fair value measurement. The following table represents the fair value hierarchy for the Company's financial assets (investments) measured at fair value on a recurring basis at December 31, 2015 and December 31, 2014 (in thousands): Fair Value Measurements at Reporting Date Using Quoted Prices Significant in Active Other Significant Balance at Markets for Observable Unobservable December 31, Identical Assets Inputs Inputs 2015 (Level 1) (Level 2) (Level 3) Cash equivalents: Money market mutual funds $ 281 $ 281 $ - $ - Marketable Securities: Time deposits 12,825 12,825 - - Corporate bonds 5,006 - 5,006 - Long-term investments: Time deposits 10,821 10,821 - - Total $ 28,933 $ 23,927 $ 5,006 $ - Fair Value Measurements at Reporting Date Using Quoted Prices Significant in Active Other Significant Balance at Markets for Observable Unobservable December 31, Identical Assets Inputs Inputs 2014 (Level 1 ) (Level 2) (Level 3 ) Cash equivalents: Money market mutual funds $ 4,070 $ 4,070 $ - $ - Marketable Securities: Time deposits 21,782 21,782 - - Corporate bonds 10,075 - 10,075 - Long-term investments: Time deposits 10,635 10,635 - - Total $ 46,562 $ 36,487 $ 10,075 $ - As of December 31, 2015 and 2014, the Company held investments in corporate bonds, certificates of deposit, and money market securities. The Company's cash and cash equivalents consist of investments with original maturities of 90 days or less from the date of purchase. The Company's short-term investments consist of corporate bonds and certificates of deposit with original maturities of 91 days or more from the date of purchase. The Company's long-term investments are comprised of certificates of deposit with original maturities of 365 days or more from the date of purchase.

Selected Quarterly Data

Selected Quarterly Data	12 Months Ended
	Dec. 31, 2015
Selected Quarterly Data [Abstract]
Selected Quarterly Data	13. Selected Quarterly Data (Unaudited) The following table presents summary unaudited quarterly financial data (in thousands, except per share data): First Second Third Fourth Quarter Quarter Quarter Quarter 2015 Revenues, net $ 21,663 $ 25,045 $ 18,060 $ 16,421 Gross profit 8,792 10,495 7,097 6,651 Net income 3,558 5,040 3,653 787 Net income per share - basic 0.20 0.28 0.20 0.05 Net income per share - diluted 0.19 0.27 0.20 0.05 2014 Revenues, net $ 24,882 $ 24,199 $ 18,096 $ 18,810 Gross profit 9,914 9,695 7,139 7,469 Net income 5,015 3,782 4,303 1,408 Net income per share - basic 0.27 0.20 0.23 0.08 Net income per share - diluted 0.26 0.20 0.23 0.08

The Company and summary of si20

The Company and summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2015
The Company and summary of significant accounting policies [Abstract]
Use of estimates	Use of estimates The preparation of consolidated financial statements in accordance with accounting principles generally accepted in the United States of America 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates involve those required in the assessment of the allowances for sales returns, doubtful accounts, potential excess or obsolete inventory, the valuation of stock-based compensation and the valuation of deferred tax assets. Actual results could differ from those estimates.
Basis of presentation	Basis of presentation The consolidated financial statements include the accounts of the Company and its subsidiaries. All material intercompany accounts and transactions have been eliminated in consolidation.
Foreign currency translation	Foreign currency translation The Company's operations through foreign subsidiaries use the local currency as their functional currency. All assets and liabilities of the subsidiaries are translated at rates of exchange as of the balance sheet date. Revenues and expenses are translated at the average rate of exchange for the period. Gains and losses resulting from foreign currency translation are recorded as a separate component of other comprehensive income in stockholders' equity. Foreign currency transaction gains and losses are recorded in interest and other income and have not been material.
Cash, cash equivalents, short-term and long-term investments	Cash, cash equivalents, short-term and long-term investments The Company considers all highly liquid instruments with a maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents consist of cash deposited in money market, certificate of deposit, and checking accounts. The Company accounts for its investments under the provisions of Accounting Standards Codification (“ASC”) 320 “Investments - Debt and Equity Securities.” Investments in highly liquid financial instruments with remaining maturities greater than three months and maturities of less than one year are classified as short-term investments. Financial instruments with remaining maturities greater than one year are classified as long-term investments. All investments are classified as available-for-sale and are reported at fair value using the specific identification method with net unrealized gain/(loss) reported, net of tax as other comprehensive gain/(loss) in stockholders' equity. The fair value of the Company's available-for-sale securities are based on quoted market prices or other methodologies for those investments with no quoted market prices at the balance sheet dates. The Company's financial instruments also include accounts receivable, accounts payable and are carried at cost, which approximates the fair value of these instruments.
Fair value of financial instruments	Fair value of financial instruments The Company applies fair value accounting for all financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities, which are required to be recorded at fair value, the Company considers the principal or most advantageous market in which the Company would transact and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as risks inherent in valuation techniques, transfer restrictions and credit risk. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1 – Quoted prices in active markets for identical assets or liabilities. Level 2 – Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 – Inputs that are generally unobservable and typically reflect management's estimate of assumptions that market participants would use in pricing the asset or liability. The Company's valuation techniques used to measure the fair value of money market funds and certain marketable equity securities were derived from quoted prices in active markets for identical assets or liabilities. In accordance with the fair value accounting requirements, companies may choose to measure eligible financial instruments and certain other items at fair value. The Company has not elected the fair value option for any eligible financial instruments.
Allowance for doubtful accounts	Allowance for doubtful accounts The Company performs periodic credit evaluations of its customers' financial condition. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability or unwillingness of customers to make required payments. When the Company becomes aware that a specific customer is unable to meet its financial obligations, for example, as a result of bankruptcy or deterioration in the customer's operating results or financial position, the Company records a specific allowance to reflect the level of credit risk in the customer's outstanding receivable balance. The Company is not able to predict changes in the financial condition of customers, and if circumstances related to customers deteriorate, estimates of the recoverability of trade receivables could be materially affected and the Company may be required to record additional allowances. Alternatively, if the Company provides more allowances than the Company needs, the Company may reverse a portion of such provisions in future periods based on actual collection experience. In addition, the Company records additional allowances based on historical sales returns as explained under the revenue recognition section.
Inventories, net	Inventories, net Inventories are stated at the lower of cost or market, with cost being determined using standard cost, which approximates actual cost on a first-in, first-out basis. Market value is determined as the lower of replacement cost or net realizable value. We regularly review our inventories for obsolescence and reserves are established when necessary. Provisions are made for excess and obsolete inventory based on historical usage and management's estimates of future demand. Inventory reserves, once established, are only reversed upon sale or disposition of related inventory. Inventory reserves were $ 1.4 2.4 2.4
Property and equipment	Property and equipment, net Property and equipment is stated at cost less accumulated depreciation and impairment charges. Depreciation is computed using the straight-line method based on estimated useful lives of 25 two 10 five two four 2.7 2.8 2.2
Impairment of Long-lived Assets	Impairment of Long-lived Assets The Company reviews its long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate. Each impairment test is based on a comparison of the undiscounted future cash flows to the recorded value of the asset. If impairment is indicated, the asset is written down to its estimated fair value based on fair market values.
Revenue recognition	Revenue recognition The Company recognizes revenue upon shipment of its products to its customers, provided that the Company has received a purchase order, the price is fixed, collection of the resulting receivable is reasonably assured and transfer of title and risk of loss has occurred. Subsequent to the sale of its products, the Company has no obligation to provide any modification or customization upgrades, enhancements or post contract customer support. Allowances are provided for estimated returns. A provision for estimated sales return allowances is recorded at the time revenue is recognized based on historical returns, current economic trends and changes in customer demand. Such allowances are adjusted periodically to reflect actual and anticipated experience. Such adjustments, which are recorded against revenue in the period, have generally not been material. The Company accrued $ 0.07 0.08 0.06
Shipping and handling expenses	Shipping and handling expenses Shipping and handling expenses are included in cost of revenue.
Research and development expenses	Research and development expenses Research and development costs are charged to expense as incurred.
Advertising expenses	Advertising expenses Advertising costs are charged to expense as incurred and have not been material in 2015, 2014 and 2013.
Sales taxes	Sales taxes The Company accounts for taxes charged to its customers and collected on behalf of taxing authorities on a net basis.
Income taxes	Income taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes, which requires that the Company recognize deferred tax liabilities and assets based on the differences between the financial statement carrying amounts and the tax basis of assets and liabilities, using enacted tax rates in effect in the years the differences are expected to reverse. Deferred income tax benefit (expense) results from the change in net deferred tax assets or deferred tax liabilities. A valuation allowance is recorded when it is more likely than not that some or all deferred tax assets will not be realized. The Company applies ASC 740 which utilizes a two-step approach wherein a tax benefit is recognized if a position is more-likely-than-not to be sustained. The amount of the benefit is then measured to be the highest tax benefit that is greater than 50% likely to be realized. The Company has elected to include interest and penalties related to its tax contingencies in income tax expense. The Company files a U.S. federal tax return and returns with the State of California and the State of Georgia. The Company has determined that its major tax jurisdictions are the United States, California, Georgia, Taiwan and China. The Company follows the provisions of ASC 740-10-25, Income Taxes: Recognition ("ASC 740-10-25"). The total amount of unrecognized tax benefits as of December 31, 2015, 2014 and 2013 were $1.1 million, $1.1 million and $0.7 million respectively. The Company does not anticipate any significant change to its unrecognized tax positions over the next 12 months. The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate were $ 0.7 0.7 0.3 A reconciliation of the beginning and ending balances of the total amounts of unrecognized tax benefits for the years ended December 31, 2015 and 2014 are as follows: Balance at December 31, 2013 $ 683 Additions for tax positions of the prior year 280 Additions for tax positions of the current year 117 Balance at December 31, 2014 $ 1,080 Additions for tax positions of the current year 10 Reductions for tax positions of the prior year (18 ) Balance at December 31, 2015 $ 1,072 The Company recognizes interest and penalties accrued related to unrecognized tax benefits in the provision for income taxes. During the years ended December 31, 2015, 2014 and 2013, the Company recognized approximately $ 0.2 0.1 0.1 Deferred tax assets pertaining to windfall tax benefits on the exercise of share awards and the corresponding credit to additional paid-in capital are recorded if the related tax deduction reduces tax payable. The Company has elected the “with-and-without approach excluding indirect tax effects” regarding ordering of windfall tax benefits to determine whether the windfall tax benefit reduced taxes payable in the current year. Under this approach, the windfall tax benefits would be recognized in additional paid-in capital only if an incremental tax benefit is realized after considering all other tax benefits presently available to the Company without considering available income tax credits. The Company's deferred tax assets as of December 31, 2015, 2014 and 2013 do not include $ 0.7 0.6 1.8 The Company files income tax returns in the United States (federal), Taiwan, China and in various state and local jurisdictions. The Company is no longer subject to federal income tax examinations by tax authorities for years prior to 2012, California State and China income tax examination by tax authorities for years prior to 2011, and Taiwan income tax examinations by tax authorities for years prior to 2009. The Company is not currently under examination by any federal, state or local jurisdiction. It is not anticipated that unrecognized tax benefits will significantly change in the next twelve months.
Stock-based compensation	Stock-based compensation The Company estimates the fair value of the share-based payment awards on the date of grant using an option pricing model. The value of awards that are ultimately expected to vest is recognized as an expense over the requisite employee service period.
Comprehensive income	Comprehensive income Comprehensive income is defined as the change in equity of a company from transactions and other events and circumstances excluding transactions resulting from investments from owners and distributions to owners. Accumulated other comprehensive income consists of cumulative translation adjustments and unrealized gains on short-term investments and is disclosed in the consolidated statements of stockholders' equity.
Recent accounting pronouncements	Recent accounting pr onouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2016-02, "Leases (Topic 842)". The amendments under this pronouncement will change the way all leases with a duration of one year of more are treated. Under this guidance, lessees will be required to capitalize virtually all leases on the balance sheet as a right-of-use asset and an associated financing lease liability or capital lease liability. The right-of-use asset represents the lessee's right to use, or control the use of, a specified asset for the specified lease term. The lease liability represents the lessee's obligation to make lease payments arising from the lease, measured on a discounted basis. Based on certain characteristics, leases are classified as financing leases or operating leases. Financing lease liabilities, those that contain provisions similar to capitalized leases, are amortized like capital leases are under current accounting, as amortization expense and interest expense in the statement of operations. Operating lease liabilities are amortized on a straight-line basis over the life of the lease as lease expense in the statement of operations. This update is effective for annual reporting periods, and interim periods within those reporting periods, beginning after December 15, 2018. The Company is currently evaluating the impact this standard will have on its policies and procedures pertaining to its existing and future lease arrangements, disclosure requirements and on its consolidated financial statements. In July 2015, FASB issued new accounting guidance on simplifying the measurement of inventory which requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. Prior to the issuance of the standard, inventory was measured at the lower of cost or market (where market was defined as replacement cost, with a ceiling of net realizable value and floor of net realizable value less a normal profit margin). The accounting guidance is effective for annual reporting periods (including interim periods within those periods) beginning after December 15, 2016. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial statements. In January 2015, the FASB issued guidance which eliminates the concept of extraordinary items in an entity's income statement. The changes in ASU 2015-01 are effective for fiscal years beginning after December 15, 2015 and interim periods within those fiscal years. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In August 2014, FASB issued a new accounting standard which requires management to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern for each annual and interim reporting period and to provide related footnote disclosures in certain circumstances. The accounting standard is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Early adoption is permitted. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements. In May 2014, the FASB issued a new financial accounting standard which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The accounting standard is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Early adoption is not permitted. The Company is currently evaluating the impact of this accounting standard on its consolidated financial statements.

The Company and summary of si21

The Company and summary of significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2015
The Company and summary of significant accounting policies [Abstract]
Reconciliation of Unrecognized Tax Benefits	Balance at December 31, 2013 $ 683 Additions for tax positions of the prior year 280 Additions for tax positions of the current year 117 Balance at December 31, 2014 $ 1,080 Additions for tax positions of the current year 10 Reductions for tax positions of the prior year (18 ) Balance at December 31, 2015 $ 1,072

Stock-based Compensation (Table

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Stock-based Compensation [Abstract]
Schedule of Weighted Average Assumptions	Years Ended December 31, 2015 2014 2013 Risk-free interest rate 0.96 1.02 0.49 Time to maturity (in years) 3 4 4 Annualized volatility 57.59 69.67 30.30 Expected dividend rate 0.00 1.20 0.98
Schedule of Stock Options Activity	Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Options Shares Price Life Value Outstanding at December 31, 2014 693,100 $ 9.08 Granted 58,000 14.74 Exercised (101,100 ) 6.62 Forfeited (78,400 ) 11.88 Outstanding at December 31, 2015 571,600 $ 9.71 7.75 $ 3,154,415 Vested and expected to vest at December 31, 2015 496,428 $ 9.60 7.69 $ 2,796,239 Exercisable at December 31, 2015 164,167 $ 6.95 6.27 $ 1,356,896
Schedule of Information Relating to Stock Options Outstanding	Options Outstanding Options Exercisable Weighted Average Weighted Weighted Range of Number Remaining Average Number Average Exercise Outstanding Contractual Exercise Exercisable Exercise Price As of 12/31/15 Term Price As of 12/31/15 Price $3.88 $4.80 111,700 6.22 $ 4.28 85,000 $ 4.41 $5.05 $6.03 22,500 1.46 $ 5.32 22,500 $ 5.32 $6.87 $6.87 96,000 7.29 $ 6.87 13,800 $ 6.87 $8.17 $12.32 82,000 8.51 $ 11.22 600 $ 8.17 $12.50 $12.50 201,400 8.19 $ 12.50 37,600 $ 12.50 $13.61 $18.36 58,000 11.25 $ 14.74 4,667 $ 16.32 571,600 7.75 $ 9.71 164,167 $ 6.95
Schedule of Information relating to the ESPP	2015 2014 2013 Weighted average fair value per share of shares purchased $ 11.26 $ 13.01 $ 5.66 Total compensation expense for ESPP $ 324,250 $ 461,980 $ 409,079 Total amount of cash received from the purchase of stock through ESPP $ 672,899 $ 660,621 $ 521,308 Total intrinsic value of ESPP stock purchased at December 31 $ 233,381 $ 75,892 $ 863,120
Schedule of Employee Stock-Based Compensation Expense	Years Ended December 31, 2015 2014 2013 Included in cost of revenue $ 513 $ 491 $ 373 Included in operating expenses: Research and development 196 234 232 Sales, marketing and administrative 2,227 1,435 1,312 Total 2,423 1,669 1,544 Total stock-based compensation expenses $ 2,936 $ 2,160 $ 1,917

Net Income per Share (Tables)

Net Income per Share (Tables)	12 Months Ended
	Dec. 31, 2015
Net Income Per Share [Abstract]
Schedule of Computation of Basic and Diluted Net Income Per Share	Years Ended December 31, 2015 2014 2013 Numerator: Net income $ 13,038 $ 14,508 $ 18,808 Denominator: Shares used in computing net income per share: Weighted average of common shares outstanding Basic 17,648 18,488 17,785 Diluted 17,945 18,935 18,481 Net income per share: Basic $ 0.74 $ 0.78 $ 1.06 Diluted $ 0.73 $ 0.77 $ 1.02

Balance Sheet Components (Table

Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 2015
Balance Sheet Components [Abstract]
Schedule of Balance Sheet Components	December 31, 2015 2014 Cash and cash equivalents: Cash $ 5,876 $ 18,653 Money market instruments and funds 281 4,070 $ 6,157 $ 22,723 Accounts receivable, net: Accounts receivable $ 12,668 $ 10,927 Less: Allowance for doubtful accounts and sales returns (121 ) (121 ) $ 12,547 $ 10,806 Allowance for doubtful accounts and sales returns: Balance at beginning of year $ 121 $ 121 Utilized - - Balance at end of year $ 121 $ 121 Inventories: Finished goods $ 3,958 $ 3,191 Work-in-process 4,705 3,430 Raw materials 3,667 5,052 $ 12,330 $ 11,673 Inventory reserves: Finished goods $ 520 $ 647 Work-in-process 296 460 Raw materials $ 595 $ 1,261 $ 1,411 $ 2,368 Accrued expenses and other current liabilities: Compensation costs $ 4,325 $ 5,016 Professional fees 24 55 Outside commissions 146 143 Royalties 82 135 ESPP 147 138 Deferred rent 29 33 Warranty 70 82 Operating related (Taiwan and China) 483 417 Income tax 2,888 2,204 Stock buyback 851 - Other 465 476 $ 9,510 $ 8,699 Long-term liabilities: Income tax payable $ 1,581 $ 376 Accrued pension liability (Taiwan) 613 602 $ 2,194 $ 978 Accumulated other comprehensive Income: Cumulative translation adjustments $ 172 $ 1,447 Unrealized loss on short-term investments (1 ) (10 ) $ 171 $ 1,437

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2015
Property and Equipment, Net [Abstract]
Schedule of Property and Equipment, Net	December 31, (in thousands) 2015 2014 Machinery and equipment $ 22,116 $ 20,315 Furniture and fixtures 883 686 Leasehold improvements 4,373 2,655 Building and equipment prepayments 4,283 3,804 $ 31,655 $ 27,460 Less: Accumulated depreciation and amortization (15,472 ) (13,592 ) Total property and equipment, net $ 16,183 $ 13,868

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Taxes [Abstract]
Schedule of Components of Income (Loss) before Income Taxes	Years Ended December 31, 2015 2014 2013 Income subject to domestic income taxes only $ 1,569 $ 8,608 $ 17,645 Income subject to foreign income taxes only 18,248 13,764 164 $ 19,817 $ 22,372 $ 17,809
Schedule of Income Tax Provision (Benefit)	Years Ended December 31, Current: 2015 2014 2013 Federal $ 1,323 $ 2,663 $ 382 State 171 75 1 Foreign 5,484 2,403 953 6,978 5,141 1,336 Deferred: Federal (36 ) 1,891 (1,450 ) State (25 ) 763 (232 ) Foreign (138 ) 69 (653 ) (199 ) 2,723 (2,335 ) Total provision (benefit) for income taxes $ 6,779 $ 7,864 $ (999 )
Schedule of Deferred Tax Assets	Years Ended December 31, 2015 2014 2013 Deferred tax assets - current: Net operating loss carryforwards $ 744 $ 620 $ 3,501 Windfall tax benefit carryforwards (744 ) (620 ) (580 ) Federal/State credit carryforwards 2,692 2,536 2,260 Depreciation and amortization 146 24 6 Stock compensation 650 326 - Accrued liabilities and allowances 1,098 1,508 1,532 Unrecognized tax benefits (738 ) (704 ) (683 ) Total deferred tax assets $ 3,848 $ 3,690 $ 6,036
Reconciliation of Effective Tax Rates and Statutory Federal Income Tax Rate	Years Ended December 31, 2015 2014 2013 Tax at federal statutory rate 34.0 % 34.0 % 34.0 % State, net of federal benefit 4.5 5.8 5.8 Effect of permanent differences (1.8 ) 3.8 1.1 Stock and deferred compensation 1.1 0.9 (7.2 ) Net operating loss carryover 0.4 5.6 - Foreign tax differential (9.3 ) (13.1 ) 0.1 Minimum tax - 0.6 1.7 Income tax credits (1.3 ) (1.9 ) (0.9 ) Valuation allowance - - (47.4 ) Stock compensation windfall 7.0 2.1 2.3 Other (0.3 ) (2.6 ) 4.9 Provision (benefit) for taxes 34.3 % 35.2 % (5.6 )%

Geographic Segment Information

Geographic Segment Information (Tables)	12 Months Ended
	Dec. 31, 2015
Geographic Segment Information [Abstract]
Schedule of Segment Reporting Information	Years Ended December 31, 2015 2014 2013 Revenues North America $ 45,033 $ 52,101 $ 42,815 Europe 17,513 18,102 15,604 Asia 18,643 15,784 17,651 $ 81,189 $ 85,987 $ 76,070 Years Ended December 31, 2015 2014 2013 Revenues Connectivity Products $ 61,282 $ 64,791 $ 57,660 Optical Passive Products 19,907 21,196 18,410 $ 81,189 $ 85,987 $ 76,070 Years Ended December 31, 2015 2014 Property and Equipment, net United States $ 191 $ 185 Taiwan 9,016 8,568 China 6,976 5,115 $ 16,183 $ 13,868

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies [Abstract]
Schedule of Aggregate Future Minimum Facility Lease Payments	Total future minimum lease payments under operating leases as of December 31, 2015 are summarized below (in thousands): Years ending December 31, 2016 $ 1,048 2017 655 2018 428 2019 376 Total $ 2,507

Fair Value of Financial instr29

Fair Value of Financial instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value of Financial instruments [Abstract]
Schedule of Financial Assets at Fair Value	Fair Value Measurements at Reporting Date Using Quoted Prices Significant in Active Other Significant Balance at Markets for Observable Unobservable December 31, Identical Assets Inputs Inputs 2015 (Level 1) (Level 2) (Level 3) Cash equivalents: Money market mutual funds $ 281 $ 281 $ - $ - Marketable Securities: Time deposits 12,825 12,825 - - Corporate bonds 5,006 - 5,006 - Long-term investments: Time deposits 10,821 10,821 - - Total $ 28,933 $ 23,927 $ 5,006 $ - Fair Value Measurements at Reporting Date Using Quoted Prices Significant in Active Other Significant Balance at Markets for Observable Unobservable December 31, Identical Assets Inputs Inputs 2014 (Level 1 ) (Level 2) (Level 3 ) Cash equivalents: Money market mutual funds $ 4,070 $ 4,070 $ - $ - Marketable Securities: Time deposits 21,782 21,782 - - Corporate bonds 10,075 - 10,075 - Long-term investments: Time deposits 10,635 10,635 - - Total $ 46,562 $ 36,487 $ 10,075 $ -

Selected Quarterly Data (Tables

Selected Quarterly Data (Tables)	12 Months Ended
	Dec. 31, 2015
Selected Quarterly Data [Abstract]
Schedule of Selected Quarterly Data	First Second Third Fourth Quarter Quarter Quarter Quarter 2015 Revenues, net $ 21,663 $ 25,045 $ 18,060 $ 16,421 Gross profit 8,792 10,495 7,097 6,651 Net income 3,558 5,040 3,653 787 Net income per share - basic 0.20 0.28 0.20 0.05 Net income per share - diluted 0.19 0.27 0.20 0.05 2014 Revenues, net $ 24,882 $ 24,199 $ 18,096 $ 18,810 Gross profit 9,914 9,695 7,139 7,469 Net income 5,015 3,782 4,303 1,408 Net income per share - basic 0.27 0.20 0.23 0.08 Net income per share - diluted 0.26 0.20 0.23 0.08

The Company and summary of si31

The Company and summary of significant accounting policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Inventories
Inventory reserves	$ 1,411	$ 2,368	$ 2,400
Property and equipment
Depreciation and amortization	2,731	2,799	2,175
Revenue recognition
Accrued warranty reserves	70	80	60
Income taxes
Unrecognized tax benefit that, if recognized, would affect the effective tax rate	700	700	300
Reconciliation of Unrecognized Tax Benefits:
Beginning balance	1,080	683
Additions for tax positions of the prior year		280
Additions for tax positions of the current year	10	117
Reductions for tax positions of the prior year	(18)
Ending balance	1,072	1,080	683
Expense for interest and penalties	200	100	100
Deferred tax asset not recognized, excess tax benefits from employee stock option exercises	$ 700	$ 600	$ 1,800
Buildings [Member]
Property and equipment
Estimated useful life	25 years
Machinery and Equipment [Member] | Minimum [Member]
Property and equipment
Estimated useful life	2 years
Machinery and Equipment [Member] | Maximum [Member]
Property and equipment
Estimated useful life	10 years
Furniture and Fixtures [Member]
Property and equipment
Estimated useful life	5 years
Leasehold Improvements [Member] | Minimum [Member]
Property and equipment
Estimated useful life	2 years
Leasehold Improvements [Member] | Maximum [Member]
Property and equipment
Estimated useful life	4 years

Stockholders' Equity (Details)

Stockholders' Equity (Details) $ / shares in Units, $ in Millions	Nov. 14, 2014$ / shares	Nov. 07, 2013$ / shares	Aug. 30, 2013shares	Dec. 31, 2015USD ($)shares	Dec. 31, 2014shares	Dec. 31, 2013shares	Aug. 24, 2015USD ($)	Aug. 29, 2013shares
Class of Stock [Line Items]
Preferred stock, shares authorized				5,000,000	5,000,000
Preferred stock, shares outstanding				0	0
Common stock, shares authorized				100,000,000	100,000,000	20,000,000
Stock split, conversion ratio			2
Common stock, shares issued			18,123,136	15,786,785	17,942,595
Common stock, shares outstanding			18,123,136	15,786,785	17,942,595
Dividends declared, per share | $ / shares	$ 0.15	$ 0.15
Beneficial Ownership Of Outstanding Shares				15.00%
2014 October Program [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount (in dollars) | $				$ 15
Shares repurchased during period				313,478	740,190
November 2011 Program [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount (in dollars) | $				$ 6
Shares repurchased during period				1,081		158,798
August 2015 Program [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount (in dollars) | $				$ 35			$ 25
Shares repurchased during period				2,196,632
Scenario, Previously Reported [Member]
Class of Stock [Line Items]
Common stock, shares issued								9,061,568
Common stock, shares outstanding								9,061,568
Foxconn Holding Limited [Member]
Class of Stock [Line Items]
Beneficial Ownership Of Outstanding Shares				15.00%
Affiliate or Associates and Entities [Member]
Class of Stock [Line Items]
Beneficial Ownership Of Outstanding Shares				1.00%

Stock-based Compensation (Sched

Stock-based Compensation (Schedule of Weighted Average Assumptions) (Details) - Employee Stock Option [Member]	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.96%	1.02%	0.49%
Time to maturity (in years)	3 years	4 years	4 years
Annualized volatility	57.59%	69.67%	30.30%
Expected dividend rate	0.00%	1.20%	0.98%

Stock-based Compensation (Narra

Stock-based Compensation (Narrative) (Details) - USD ($)	Oct. 21, 2013	Apr. 29, 2011	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011	Nov. 30, 2000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance						10,000,000	300,000
Stock incentive plan, additional shares authorized	900,000
Compensation expense			$ 2,936,000	$ 2,160,000	$ 1,917,000
Scenario, Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive plan, additional shares authorized			680,000
Increase to number of shares reserved for issuance as a percentage of outstanding shares			5.00%
Restricted Stock Units (RSUs) [Member] | 2011 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted						546,000
Grant-date fair value of units granted						$ 2,500,000
Compensation expense				400,000	$ 400,000
Unrecognized compensation cost			$ 100,000
Unrecognized compensation cost, recognition period			1 year
Restricted Stock Units (RSUs) [Member] | 2013 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted					342,000
Grant-date fair value of units granted					$ 2,300,000
Compensation expense			$ 500,000	800,000
Unrecognized compensation cost			$ 100,000
Unrecognized compensation cost, recognition period			1 year
Restricted Stock Units (RSUs) [Member] | 2015 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted			302,000
Grant-date fair value of units granted			$ 5,300,000
Compensation expense			1,100,000
Unrecognized compensation cost			4,200,000
Unrecognized compensation cost, realized over two years			700,000
Unrecognized compensation cost, realized over four years			$ 3,500,000
Restricted Stock Units (RSUs) [Member] | Vesting Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			2 years
Restricted Stock Units (RSUs) [Member] | Vesting Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			5 years
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Plan duration			10 years
Intrinsic value of options exercised			$ 1,100,000	$ 1,300,000	12,800,000
Dividend rate			0.00%	0.15%
Options exercisable			164,167	118,161
Options exercisable, average exercise price			$ 6.95	$ 4.75
Shares available for future issuance			487,824
Options granted in period			58,000
Unrecognized compensation cost			$ 1,600,000
Unrecognized compensation cost, recognition period			4 years
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance							600,000
Stock incentive plan, additional shares authorized		600,000
Shares available for future issuance			208,360
Common stock purchase price, percentage of fair market value			85.00%
Shares issued under ESPP			59,781	50,759
Compensation expense			$ 324,250	$ 461,980	$ 409,079
Employee Stock Purchase Plan [Member] | Scenario, Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive plan, additional shares authorized			400,000
Increase to number of shares reserved for issuance as a percentage of outstanding shares			1.00%

Stock-based Compensation (Sch35

Stock-based Compensation (Schedule of Stock Option Activity) (Details) - Employee Stock Option [Member] - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Shares
Outstanding, beginning balance	693,100
Granted	58,000
Exercised	(101,100)
Forfeited	(78,400)
Outstanding, ending balance	571,600
Vested and expected to vest, end of period	496,428
Exercisable, end of period	164,167	118,161
Weighted Average Exercise Price
Outstanding, beginning balance	$ 9.08
Granted	14.74
Exercised	6.62
Forfeited	11.88
Outstanding, ending balance	9.71
Vested and expected to vest, end of period	9.60
Exercisable, end of period	$ 6.95	$ 4.75
Weighted Average Remaining Contractual Life
Outstanding, ending balance	7 years 9 months
Vested and expected to vest, end of period	7 years 8 months 8 days
Exercisable, end of period	6 years 3 months 7 days
Aggregate Intrinsic Value
Outstanding, ending balance	$ 3,154,415
Vested and expected to vest, end of period	2,796,239
Exercisable, end of period	$ 1,356,896

Stock-based Compensation (Sch36

Stock-based Compensation (Schedule of Information Relating to Stock Options Outstanding) (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding | shares	571,600
Options Outstanding, Weighted Average Remaining Contractual Term	7 years 9 months
Options Outstanding, Weighted Average Exercise Price	$ 9.71
Options Exercisable, Number Exercisable | shares	164,167
Options Exercisable, Weighted Average Exercise Price	$ 6.95
Exercise Price Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price Minimum	3.88
Range of Exercise Price Maximum	$ 4.80
Options Outstanding, Number Outstanding | shares	111,700
Options Outstanding, Weighted Average Remaining Contractual Term	6 years 2 months 19 days
Options Outstanding, Weighted Average Exercise Price	$ 4.28
Options Exercisable, Number Exercisable | shares	85,000
Options Exercisable, Weighted Average Exercise Price	$ 4.41
Exercise Price Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price Minimum	5.05
Range of Exercise Price Maximum	$ 6.03
Options Outstanding, Number Outstanding | shares	22,500
Options Outstanding, Weighted Average Remaining Contractual Term	1 year 5 months 16 days
Options Outstanding, Weighted Average Exercise Price	$ 5.32
Options Exercisable, Number Exercisable | shares	22,500
Options Exercisable, Weighted Average Exercise Price	$ 5.32
Exercise Price Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price Minimum	6.87
Range of Exercise Price Maximum	$ 6.87
Options Outstanding, Number Outstanding | shares	96,000
Options Outstanding, Weighted Average Remaining Contractual Term	7 years 3 months 14 days
Options Outstanding, Weighted Average Exercise Price	$ 6.87
Options Exercisable, Number Exercisable | shares	13,800
Options Exercisable, Weighted Average Exercise Price	$ 6.87
Exercise Price Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price Minimum	8.17
Range of Exercise Price Maximum	$ 12.32
Options Outstanding, Number Outstanding | shares	82,000
Options Outstanding, Weighted Average Remaining Contractual Term	8 years 6 months 4 days
Options Outstanding, Weighted Average Exercise Price	$ 11.22
Options Exercisable, Number Exercisable | shares	600
Options Exercisable, Weighted Average Exercise Price	$ 8.17
Exercise Price Range Five [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price Minimum	12.50
Range of Exercise Price Maximum	$ 12.50
Options Outstanding, Number Outstanding | shares	201,400
Options Outstanding, Weighted Average Remaining Contractual Term	8 years 2 months 8 days
Options Outstanding, Weighted Average Exercise Price	$ 12.50
Options Exercisable, Number Exercisable | shares	37,600
Options Exercisable, Weighted Average Exercise Price	$ 12.50
Exercise Price Range Six [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price Minimum	13.61
Range of Exercise Price Maximum	$ 18.36
Options Outstanding, Number Outstanding | shares	58,000
Options Outstanding, Weighted Average Remaining Contractual Term	11 years 3 months
Options Outstanding, Weighted Average Exercise Price	$ 14.74
Options Exercisable, Number Exercisable | shares	4,667
Options Exercisable, Weighted Average Exercise Price	$ 16.32

Stock-based Compensation (Sch37

Stock-based Compensation (Schedule of Information Relating to ESPP) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense for ESPP	$ 2,936,000	$ 2,160,000	$ 1,917,000
Total amount of cash received from the purchase of stock through ESPP	$ 673,000	$ 661,000	$ 521,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per share of shares purchased	$ 11.26	$ 13.01	$ 5.66
Total compensation expense for ESPP	$ 324,250	$ 461,980	$ 409,079
Total amount of cash received from the purchase of stock through ESPP	672,899	660,621	521,308
Total intrinsic value of ESPP stock purchased at December 31st	$ 233,381	$ 75,892	$ 863,120

Stock-based Compensation (Sch38

Stock-based Compensation (Schedule of Employee Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 2,936	$ 2,160	$ 1,917
Cost of Revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	513	491	373
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	196	234	232
Sales, Marketing and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,227	1,435	1,312
Operating Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 2,423	$ 1,669	$ 1,544

Net Income per Share (Details)

Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Numerator:
Net income									$ 13,038	$ 14,508	$ 18,808
Weighted average of common shares outstanding
Basic									17,648,000	18,488,000	17,785,000
Diluted									17,945,000	18,935,000	18,481,000
Net income per share:
Basic	$ 0.05	$ 0.20	$ 0.28	$ 0.20	$ 0.08	$ 0.23	$ 0.20	$ 0.27	$ 0.74	$ 0.78	$ 1.06
Diluted	$ 0.05	$ 0.20	$ 0.27	$ 0.19	$ 0.08	$ 0.23	$ 0.20	$ 0.26	$ 0.73	$ 0.77	$ 1.02
Securities excluded from computation of diluted net income per share as the effect would have been anti-dilutive:
Options to purchase common stock									12,000

Balance Sheet Components (Detai

Balance Sheet Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash and cash equivalents:
Cash			$ 5,876	$ 18,653
Money market instruments and funds			281	4,070
Cash and Cash Equivalents, At Carrying Value			6,157	22,723	$ 18,603	$ 4,793
Accounts receivable, net:
Accounts receivable			12,668	10,927
Less: Allowance for doubtful accounts and sales returns	$ (121)	$ (121)	(121)	(121)	(121)
Accounts Receivable, Net, Current			12,547	10,806
Allowance for doubtful accounts and sales returns:
Balance at beginning of year	$ 121	$ 121
Utilized
Balance at end of year	$ 121	$ 121
Inventories:
Finished goods			3,958	3,191
Work-in-process			4,705	3,430
Raw materials			3,667	5,052
Inventories			12,330	11,673
Inventory reserves:
Inventory reserves			1,411	2,368	$ 2,400
Accrued expenses and other current liabilities:
Compensation costs			4,325	5,016
Professional fees			24	55
Outside commissions			146	143
Royalties			82	135
ESPP			147	138
Deferred rent			29	33
Warranty			70	82
Operating related (Taiwan and China)			483	417
Income tax			2,888	$ 2,204
Stock buyback			851
Other			465	$ 476
Accrued Liabilities, Current, Total			9,510	8,699
Long-term liabilities:
Income tax payable			1,581	376
Accrued pension liability (Taiwan)			613	602
Liabilities, Noncurrent, Total			2,194	978
Accumulated other comprehensive Income:
Cumulative translation adjustments			172	1,447
Unrealized loss on short-term investments			(1)	(10)
Accumulated Other Comprehensive Income (Loss), Net Of Tax			171	1,437
Finished Goods [Member]
Inventory reserves:
Inventory reserves			520	647
Work-In-Process [Member]
Inventory reserves:
Inventory reserves			296	460
Raw Materials [Member]
Inventory reserves:
Inventory reserves			$ 595	$ 1,261

Property and Equipment, Net (De

Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and Equipment	$ 31,655	$ 27,460
Less: Accumulated depreciation and amortization	(15,472)	(13,592)
Total property and equipment, net	16,183	13,868
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	22,116	20,315
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	883	686
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	4,373	2,655
Building and Equipment Prepayments [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment	$ 4,283	$ 3,804

Income Taxes (Schedule of Compo

Income Taxes (Schedule of Components of Income (Loss) before Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Income subject to domestic income taxes only	$ 1,569	$ 8,608	$ 17,645
Income subject to foreign income taxes only	18,248	13,764	164
Income before benefit (provision) for income taxes	$ 19,817	$ 22,372	$ 17,809

Income Taxes (Schedule of Incom

Income Taxes (Schedule of Income Tax Provision (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 1,323	$ 2,663	$ 382
State	171	75	1
Foreign	5,484	2,403	953
Current Income Tax Expense (Benefit)	6,978	5,141	1,336
Deferred:
Federal	(36)	1,891	(1,450)
State	(25)	763	(232)
Foreign	(138)	69	(653)
Deferred Income Tax Expense (Benefit)	(199)	2,723	(2,335)
Total benefit (provision) for income taxes	$ 6,779	$ 7,864	$ (999)

Income Taxes (Schedule of Defer

Income Taxes (Schedule of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets - current:
Net operating loss carryforwards	$ 744	$ 620	$ 3,501
Windfall tax benefit carryforwards	(744)	(620)	(580)
Federal/State credit carryforwards	2,692	2,536	2,260
Depreciation and amortization	146	24	$ 6
Stock compensation	650	326
Accrued liabilities and allowances	1,098	1,508	$ 1,532
Unrecognized tax benefits	(738)	(704)	(683)
Net deferred tax assets	$ 3,848	$ 3,690	$ 6,036

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Effective Tax Rates and Statutory Federal Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Tax at federal statutory rate	34.00%	34.00%	34.00%
State, net of federal benefit	4.50%	5.80%	5.80%
Effect of permanent differences	(1.80%)	3.80%	1.10%
Stock and deferred compensation	1.10%	0.90%	(7.20%)
Net operating loss carryover	0.40%	5.60%
Foreign tax differential	(9.30%)	(13.10%)	0.10%
Minimum tax		0.60%	1.70%
Income tax credits	(1.30%)	(1.90%)	(0.90%)
Valuation allowance			(47.40%)
Stock compensation windfall	7.00%	2.10%	2.30%
Other	(0.30%)	(2.60%)	4.90%
Provision (benefit) for taxes	34.30%	35.20%	(5.60%)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 1
Net operating loss carryforwards, expiration date	Dec. 31, 2025
Tax Credit Carryforward, Amount	$ 1.4
Research credit carryforwards , expiration date	Jan. 1, 2019
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 6.9
Net operating loss carryforwards, expiration date	Dec. 31, 2018
Tax Credit Carryforward, Amount	$ 1

Concentrations of Certain Ris47

Concentrations of Certain Risks (Details) - Customer A [Member]	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts Receivable [Member] | Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	15.10%	26.90%
Sales [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	31.00%	39.60%	35.30%

Geographic Segment Informatio48

Geographic Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues
Revenues	$ 16,421	$ 18,060	$ 25,045	$ 21,663	$ 18,810	$ 18,096	$ 24,199	$ 24,882	$ 81,189	$ 85,987	$ 76,070
Property and Equipment, net
Property and Equipment, net	16,183				13,868				16,183	13,868
North America [Member]
Revenues
Revenues									45,033	52,101	42,815
Europe [Member]
Revenues
Revenues									17,513	18,102	15,604
Asia [Member]
Revenues
Revenues									18,643	15,784	17,651
United States [Member]
Property and Equipment, net
Property and Equipment, net	191				185				191	185
Taiwan [Member]
Property and Equipment, net
Property and Equipment, net	9,016				8,568				9,016	8,568
China [Member]
Property and Equipment, net
Property and Equipment, net	$ 6,976				$ 5,115				6,976	5,115
Connectivity Products [Member]
Revenues
Revenues									61,282	64,791	57,660
Optical Passive Products [Member]
Revenues
Revenues									$ 19,907	$ 21,196	$ 18,410

Commitments and Contingencies49

Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Indemnification and Product Warranty:
Accrued warranty reserves	$ 70	$ 80	$ 60
Operating Leases:
Total rent expense	900	$ 700	$ 700
2,016	1,048
2,017	655
2,018	428
2,019	376
Total	$ 2,507

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Ownership percentage	15.00%
Hon Hai Precision Industry Co. Ltd. [Member]
Related Party Transaction [Line Items]
Net sales to related party	$ 40	$ 70	$ 10
Purchases of raw materials from related party	$ 2,000	1,800	1,500
Amounts due from related party		50	10
Amounts due to related party	$ 300	$ 400	$ 300

Fair Value of Financial instr51

Fair Value of Financial instruments (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 281	$ 4,070
Total	28,933	46,562
Short-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	12,825	21,782
Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	5,006	10,075
Long-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	10,821	10,635
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	281	4,070
Total	23,927	36,487
Fair Value, Inputs, Level 1 [Member] | Short-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 12,825	$ 21,782
Fair Value, Inputs, Level 1 [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments
Fair Value, Inputs, Level 1 [Member] | Long-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 10,821	$ 10,635
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents
Total	$ 5,006	$ 10,075
Fair Value, Inputs, Level 2 [Member] | Short-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 5,006	$ 10,075
Fair Value, Inputs, Level 2 [Member] | Long-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents
Total
Fair Value, Inputs, Level 3 [Member] | Short-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments
Fair Value, Inputs, Level 3 [Member] | Corporate Bond Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments
Fair Value, Inputs, Level 3 [Member] | Long-Term Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments

Selected Quarterly Data (Detail

Selected Quarterly Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Selected Quarterly Data [Abstract]
Revenues, net	$ 16,421	$ 18,060	$ 25,045	$ 21,663	$ 18,810	$ 18,096	$ 24,199	$ 24,882	$ 81,189	$ 85,987	$ 76,070
Gross profit	6,651	7,097	10,495	8,792	7,469	7,139	9,695	9,914	33,035	34,217	29,118
Net income	$ 787	$ 3,653	$ 5,040	$ 3,558	$ 1,408	$ 4,303	$ 3,782	$ 5,015	$ 13,038	$ 14,508	$ 18,808
Net income per share - basic	$ 0.05	$ 0.20	$ 0.28	$ 0.20	$ 0.08	$ 0.23	$ 0.20	$ 0.27	$ 0.74	$ 0.78	$ 1.06
Net income per share - diluted	$ 0.05	$ 0.20	$ 0.27	$ 0.19	$ 0.08	$ 0.23	$ 0.20	$ 0.26	$ 0.73	$ 0.77	$ 1.02