Cutera (CUTR) 10-K 26 Mar 18 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Mar. 01, 2018	Jun. 30, 2017
Document Information [Line Items]
Entity Registrant Name	CUTERA INC
Entity Central Index Key	1,162,461
Trading Symbol	cutr
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		13,582,973
Entity Public Float			$ 278
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 14,184	$ 13,775
Marketable investments	21,728	40,299
Accounts receivable, net of allowance for doubtful accounts of $9 and $21, respectively	20,777	16,547
Inventories	28,782	14,977	[1]
Other current assets and prepaid expenses	2,903	2,251
Total current assets	88,374	87,849
Property and equipment, net	2,096	1,907
Deferred tax assets	19,055	377
Intangibles, net		2
Goodwill	1,339	1,339
Other long-term assets	374	380
Total assets	111,238	91,854
Current liabilities:
Accounts payable	7,002	2,598
Accrued liabilities	26,848	17,397
Deferred revenue	9,461	8,394
Total current liabilities	43,311	28,389
Deferred revenue, net of current portion	2,195	1,705
Income tax liability	379	168
Other long-term liabilities	460	582
Total liabilities	46,345	30,844
Commitments and contingencies (Note 12)
Stockholders’ equity:
Convertible preferred stock, $0.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: none
Common stock, $0.001 par value: Authorized: 50,000,000 shares; Issued and outstanding: 13,477,973 and 13,773,389 shares at December 31, 2017 and 2016, respectively	13	14
Additional paid-in capital	62,025	88,114
Retained earnings (accumulated deficit)	2,947	(27,046)
Accumulated other comprehensive loss	(92)	(72)
Total stockholders’ equity	64,893	61,010
Total liabilities and stockholders’ equity	$ 111,238	$ 91,854
[1]	The Raw materials balance in prior year was reclassified for consistency with current year.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts receivable, allowance for doubtful accounts	$ 9	$ 21
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, authorized (in shares)	5,000,000	5,000,000
Convertible preferred stock, issued (in shares)	0	0
Convertible preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, issued (in shares)	13,477,973	13,773,389
Common stock, outstanding (in shares)	13,477,973	13,773,389

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net revenue:
Products	$ 132,660	$ 99,028	$ 77,022
Sales Revenue, Services, Net	18,833	19,028	17,739
Total net revenue	151,493	118,056	94,761
Cost of revenue:
Products	56,363	40,149	32,402
Service	9,020	9,772	8,076
Total cost of revenue	65,383	49,921	40,478
Gross profit	86,110	68,135	54,283
Operating expenses:
Sales and marketing	52,070	41,563	35,942
Research and development	12,874	11,232	10,733
General and administrative	14,090	12,943	12,129
Lease termination income	(4,000)
Total operating expenses	75,034	65,738	58,804
Income (loss) from operations	11,076	2,397	(4,521)
Interest and other income, net	884	323	293
Income (loss) before income taxes	11,960	2,720	(4,228)
Income tax provision (benefit)	(18,033)	143	212
Net income (loss)	$ 29,993	$ 2,577	$ (4,440)
Net income (loss) per share:
Basic (in dollars per share)	$ 2.16	$ 0.19	$ (0.32)
Diluted (in dollars per share)	$ 2.04	$ 0.19	$ (0.32)
Weighted-average number of shares used in per share calculations:
Basic (in shares)	13,873	13,225	13,960
Diluted (in shares)	14,728	13,753	13,960

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income (loss)	$ 29,993	$ 2,577	$ (4,440)
Available-for-sale investments
Net change in unrealized gain (loss) on available-for-sale investments	(15)	30	(87)
Less: Reclassification adjustment for net gains on investments recognized during the year	(5)	(3)	(7)
Net change in unrealized gain (loss) on available-for-sale investments	(20)	27	(94)
Tax provision		10
Other comprehensive income (loss), net of tax	(20)	17	(94)
Comprehensive income (loss)	$ 29,973	$ 2,594	$ (4,534)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2014	14,446,950
Balance at Dec. 31, 2014	$ 14	$ 105,721	$ (25,232)	$ 5	$ 80,508
Issuance of common stock for employee purchase plan (in shares)	55,872
Issuance of common stock for employee purchase plan		577			$ 577
Exercise of stock options (in shares)	1,141,904				1,141,904
Exercise of stock options	$ 2	10,500			$ 10,502
Issuance of common stock in settlement of restricted and performance stock units, net of shares withheld for employee taxes, and stock awards (in shares)	154,119
Issuance of common stock in settlement of restricted and performance stock units, net of shares withheld for employee taxes, and stock awards		(1,018)			(1,018)
Repurchase of common stock (in shares)	(2,818,038)
Repurchase of common stock	$ (3)	(40,082)			(40,085)
Stock-based compensation expense		4,084			4,084
Net income (loss)			(4,440)		(4,440)
Net change in unrealized loss on available-for-sale investments				(94)	(94)
Balance (in shares) at Dec. 31, 2015	12,980,807
Balance at Dec. 31, 2015	$ 13	79,782	(29,672)	(89)	50,034
Issuance of common stock for employee purchase plan (in shares)	79,922
Issuance of common stock for employee purchase plan		768			$ 768
Exercise of stock options (in shares)	1,051,138				1,051,138
Exercise of stock options	$ 1	9,342			$ 9,343
Issuance of common stock in settlement of restricted and performance stock units, net of shares withheld for employee taxes, and stock awards (in shares)	116,833
Issuance of common stock in settlement of restricted and performance stock units, net of shares withheld for employee taxes, and stock awards		(618)			(618)
Repurchase of common stock (in shares)	(455,311)
Repurchase of common stock		(4,873)			(4,873)
Stock-based compensation expense		3,713			3,713
Net income (loss)			2,577		2,577
Net change in unrealized loss on available-for-sale investments				17	$ 17
Balance (in shares) at Dec. 31, 2016	13,773,389				13,773,389
Balance at Dec. 31, 2016	$ 14	88,114	(27,046)	(72)	$ 61,010
Deferred tax relating to adoption of ASU 2016-09			49		49
Issuance of common stock for employee purchase plan (in shares)	78,479
Issuance of common stock for employee purchase plan		1,059			$ 1,059
Exercise of stock options (in shares)	488,398				488,398
Exercise of stock options		4,376			$ 4,376
Issuance of common stock in settlement of restricted and performance stock units, net of shares withheld for employee taxes, and stock awards (in shares)	160,309
Issuance of common stock in settlement of restricted and performance stock units, net of shares withheld for employee taxes, and stock awards		(1,469)			(1,469)
Repurchase of common stock (in shares)	(1,022,602)
Repurchase of common stock	$ (1)	(35,165)			(35,166)
Stock-based compensation expense		5,110			5,110
Net income (loss)			29,993		29,993
Net change in unrealized loss on available-for-sale investments				(20)	$ (20)
Balance (in shares) at Dec. 31, 2017	13,477,973				13,477,973
Balance at Dec. 31, 2017	$ 13	$ 62,025	$ 2,947	$ (92)	$ 64,893

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ 29,993	$ 2,577	$ (4,440)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Stock-based compensation	5,110	3,713	4,084
Depreciation and amortization	1,016	982	1,186
Change in deferred tax assets	(18,678)	22	(55)
Other	(52)	(7)	282
Changes in assets and liabilities:
Accounts receivable	(4,229)	(4,899)	(536)
Inventories	(13,805)	(2,899)	(1,090)
Other current assets and prepaid expenses	(591)	(432)	241
Other long-term assets	6	4	(23)
Accounts payable	4,404	639	(1,124)
Accrued liabilities	9,345	3,461	2,687
Other long-term liabilities		(329)	(289)
Deferred revenue	1,557	(826)	(2,319)
Income tax liability	211	(14)	37
Net cash provided by (used in) operating activities	14,287	1,992	(1,359)
Cash flows from investing activities:
Acquisition of property, equipment and software	(855)	(537)	(746)
Disposal of property and equipment	53	20
Proceeds from sales of marketable investments	33,640	9,008	21,171
Proceeds from maturities of marketable investments	45,812	25,810	35,918
Purchase of marketable investments	(60,956)	(37,693)	(23,697)
Net cash provided by (used in) investing activities	17,694	(3,392)	32,646
Cash flows from financing activities:
Repurchase of common stock	(35,167)	(4,873)	(40,085)
Proceeds from exercise of stock options and employee stock purchase plan	5,435	10,111	11,079
Taxes paid related to net share settlement of equity awards	(1,469)	(618)	(1,018)
Payments on capital lease obligation	(371)	(313)	(198)
Net cash provided by (used in) financing activities	(31,572)	4,307	(30,222)
Net increase in cash and cash equivalents	409	2,907	1,065
Cash and cash equivalents at beginning of year	13,775	10,868	9,803
Cash and cash equivalents at end of year	14,184	13,775	10,868
Supplemental cash flow information:
Cash paid for interest	70	43	20
Cash paid for income taxes	220	222	160
Supplemental non-cash investing and financing activities:
Assets acquired under capital lease	$ 365	$ 801	$ 285

Note 1 - Description of Busines

Note 1 - Description of Business	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Business Description and Basis of Presentation [Text Block]	NOTE 1 . DESCRIPTION OF BUSINESS Cutera, Inc. (“ Cutera” or the “Company”) is a global provider of laser and other energy-based aesthetic systems for practitioners worldwide. The Company designs, develops, manufactures, and markets laser and other energy-based product platforms for use by physicians and other qualified practitioners which enable them to offer safe and effective aesthetic treatments to their customers. The Company currently markets the following key system platforms: excel V, excel HR, enlighten, Juliet Secret RF truSculpt xeo Titan truSculpt 3D third Titan truSculpt 3D Headquartered in Brisbane, California, the Company has wholly-owned subsidiaries that are currently operational in Australia, Belgium, Canada, France, Germany, Hong Kong, Japan, Spain, Switzerland and the United Kingdom. These subsidiaries market, sell and service the Company’s products outside of the United States.

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]	NOTE 2 —SUMMARY OF SIGNIFICANT ACCOUTING POLICIES Principles of Consolidation The Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. All inter-company transactions and balances have been eliminated in consolidation. Use of Estimates The preparation of Consolidated Financial Statements in conformity with generally accepted accounting principles in the Un ited States of America (“GAAP”) requires the Company’s management to make estimates and assumptions that affect the amounts reported of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reported periods. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates their estimates, including those related to warranty obligation, sales commission, accounts receivable and sales allowances, valuation of inventories, fair values of acquired intangible assets, useful lives of intangible assets and property and equipment, assumptions regarding variables used in calculating the fair value of the Company's equity award, fair value of investments, contingent liabilities, recoverability of deferred tax assets, and effective income tax rates, among others. Management bases their estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Risks and Uncertainties The Company's future results of operations involve a number of risks and uncert ainties. Factors that could affect the Company's future operating results and cause actual results to vary materially from expectations include, but are not may may Cash and Cash Equivalents, and Marketable Investments The Company invests it s cash primarily in money market funds and in highly liquid debt instruments of U.S. federal and municipal governments and their agencies, commercial paper and corporate debt securities. All highly liquid investments with stated maturities of three three The Company determines the appropriate classification of its investments in marketable securities at the time of pur chase and re-evaluates such designation at each balance sheet date. The Company’s marketable securities have been classified and accounted for as available-for-sale. Investments with remaining maturities more than one Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value. Carrying amounts of the Company’s financial instruments, including cash equivalents, accounts receivable, accounts payable and accrued liabilities, approximate their fair values as of the balance sheet dates because of their generally short maturities. The fair value hierarchy distin guishes between ( 1 2 three 1 3 three 820: ● Level 1: ● Level 2: not 2 ncludes assets and liabilities that are valued using models or other pricing methodologies that do not ● Level 3: no values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inp uts and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value. Impairment of Marketable Investments After determining the fair value of available-for-sales debt instruments, gains or losses on these securities are recorded to other comprehensive income (loss), until either the security is sold or the Company determines that the decline in value is other-than-temporary. The primary differentiating factors that the Company considers in classifying impairments as either temporary or other-than-temporary impairments are the Company’s intent and ability to retain the investment in the issuer for a period of time sufficient to allow for any anticipated recovery in market value or the maturity of the investment, the length of the time and the extent to which the market value of the investment has been less than cost and the financial condition and near-term prospects of the issuer. There were no December 31, 2017, 2016, 2015 . Allowance for Sales Returns and Doubtful Accounts The allowance for sales returns is based on the Company ’s estimates of potential future product returns and other allowances related to current period product revenue. The Company analyzes historical returns, current economic trends and changes in customer demand and acceptance of the Company's products. The allowance for doubtful accounts is based on the Company’s assessment of the collectability of customer accounts and the aging of the related invoices, and represents the Company's best estimate of probable credit losses in its existing trade accounts receivable. The Company regularly reviews the allowance by considering factors such as historical experience, credit quality, the age of the accounts receivable balances, and current economic conditions that may Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of risk consist principally of cash, cash equivalents, marketable investments and accounts receivable. The Company ’s cash and cash equivalents are primarily invested in deposits and money market accounts with three may not The Company invests in debt instruments, including bonds of the U.S. Government, its agencies and municipalities. The Company has also invested in other high grade investments such as commercial paper and corporate bonds. The Company has established guidelines relative to credit ratings, diversification and maturities that seek to maintain safety and liquidity. By policy, the Company restricts its exposure to any single issuer by imposing concentration limits. To minimize the exposure due to adverse shifts in interest rates, the Company maintains investments at an average maturity of generally less than eighteen Accounts receivable are recorded net of an allowance for doubtful accounts, and are typically unsecured and are derived from revenue earned from worldwide customers. The Company controls credit risk through credit approvals, credit limits, and monitoring procedures. The Company performs credit evaluations of its customers and maintains reserves for potential credit losses . As of December 31, 2017 2016, one 12% December 31, 2017, 2016, 2015, 62%, 55%, 52%, 38%, 45%, 48%, No 10% December 31, 2017, 2016, 2015 . Inventories Inventories are stated at the lower of cost and net realizable value, cost being determined on a standard cost basis which approximates actual cost on a first first Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The cost basis of the Company’s inventory is reduced for any products that are considered excessive or obsolete based upon assumptions about future demand and market conditions. The Company includes demonstration units within inventories. Demonstration units are carried at cost and amortized over an estimated economic life of two As of December 31, 2017 2016, $1. 9 $2.4 Property and Equipment Property and equipment ar e stated at cost, net of accumulated depreciation. Depreciation recognized is recognized on a straight-line basis over the estimated useful lives of the assets, generally as follows: Useful Lives Leasehold improvements Lesser of useful life or term of lease Office equipment and furniture (in years) 3 Machinery and equipment (in years) 3 Upon sale or retirement of property and equipment, the costs and related accumulated depreciation and amortization are removed from the balance sheet and the resulting gain or loss is reflected in operating expenses. Maintenance and repairs are charged to operations as incurred. Depreciation expense related to property and equipment for 201 7, 2016 2015, $1.0 , $ 0.8 0.7 Goodwill and Other Intangible Assets Goodwill and intangible assets with indefinite useful lives are not for impairment, applying a fair-value based test, at least annually during the fourth may no one December 31, 2017, no December 31, 2017. Warranty Obligations The Company provides a standard one labor and parts necessary to repair the systems during the warranty period. For sales to distributors, the Company generally provides a 14 16 The Company accounts for the estimated warranty cost of the standard warranty coverage as a charge to costs of revenue when revenue is recognized. Factors that affect the Company’s warranty reserves include the number of units sold, historical product performance, and anticipated rates of warranty repairs and the cost per repair. The Company periodically assesses the adequacy of the warranty reserve and adjusts the amount as necessary. To determine the estimated warranty reserve, the Company utilizes actual service records to calculate the average service expense per system and applies this to the equivalent number of units exposed under warranty. The Company updates these estimated charges every quarter. Revenue Recognition Products revenue is recognized when title and risk of ownership has been transferred, provided that: ● Persuasive evidence of an arrangement exists; ● The price is fixed or determinable; ● Delivery has occurred or services have been rendered; and ● Collectability is reasonably a ssured. Transfer of title and risk of ownership occurs when the product is shipped to the customer or when the customer receives the product, depending on the nature of the arrangement. Revenue is recorded net of customer and distributor discounts. When collectability is not not Multiple-element A rrangements A multiple-element arrangement includes the sale of one one ment arrangements are generally comprised of the following elements that are recognized as separate units of accounting: Product, service contracts , training, and in some cases, marketing support and installation. For multiple-element arrangements, judgments are required as to the allocation of the proceeds received from an arrangement to the multiple elements of the arrangement. For multiple element arrangements the Company allocates revenue to all deliverables based on their relative selling prices in accordance with the Financial Accounting Standards (“FASB”) Accounting Standards Codification (“ASC”) 605 25. third not With respect to the sale of its truSculpt truSculpt not truSculpt truSculpt May 2017, truSculpt 3D . C truSculpt 3D . Revenue from the sale of such refills is recorded as Product revenue in the period in which such sales are made. Customer Marketing Arrangements The Company has a customer marketing and incentive program called “Cutera Bucks” for its North America customers through which it offers various sales incentives and discounts and pays or reimburses customers for qualifying expenses associated with practice set-up, advertising procedures related to the system purchased, and other expenses. The Company records such incentives as a reduction of revenue at the time when the sale of the system is recorded. Service Revenue The Company also offers customers extended service contracts. Revenue under service contracts is recognized on a straight-line basis over the per iod of the applicable service contract. service contract, including installation and training revenue, is recognized when the related services are performed and collectability is reasonably assured . Service revenue billed on a time and material basis, from customers whose systems are not December 31, 201 7, 2016, 2015 $18.8 $19.0 $17.7 Bill and Hold Arrangement In 2017 one third no The Company recognized revenue of $938,000 2017. no 2016 2015. Cost of Revenue Cost of revenue consists primarily of material, finished and semi-finished products purchased from third olved in the Company's internal manufacturing processes, technology license amortization and royalties, costs associated with product warranties and any inventory or intangible write-downs. The Company's system sales include a control console, universal graphic us er interface, control system software, high voltage electronics and a combination of applications (referred to as hand pieces). Hand pieces are programmed to have a limited number of uses to ensure the safety of the device to patients. The Company sells refurbished hand pieces, or "refills," of its Titan truSculpt 3D , the Company capitalizes the expended hand piece as inventory at the estimated fair value. Cost of revenue includes the costs incurred to refurbish hand pieces. Research and Development Expenditures Research and development costs are expensed as incurred and include costs related to research, design, development, testing of products, salaries, benefits and other headcount related costs, facilities, material, third . Advertising Costs Advertising costs are included as part of sales and marketing expens e and are expensed as incurred. Advertising expenses for 2017, 2016 2015 $1.8 $1.3 $1.2 Stock-based Compensation The Company accounts for share-based compensation costs in accordance with the accounting standards for share-based compensation, which require that all share-based payments to employees and non-employees be recognized in the consolidated statements of operations based on their fair values. ● The fair value of stock options ("options") on the grant date is estimated using the Black-Scholes option-pricing model using the single-option approach. The Black-Scholes option pricing model requires the use of highly subjective and complex assumptions, including the option's expected term and the price volatility of the underlying stock, to determine the fair value of award. The Company recognizes the expense associated with options using a single award approach over the requisite service period. The Company accounts for all stock options awarded to non-employees at the fair value of the consideration received or the fair value of the equity instrument issued, as calculated using the Black-Scholes model. The Company subjects stock options granted to non-employees to periodic revaluation at each reporting date as the underlying equity instruments vest . ● The fair value of Restricted Stock Units ("RSUs") is based on the stock price on the grant date using a single-award approach. The RSUs are subject to a service vesting condition and are recognized on a straight-line basis over the requisite service period. For RSUs to non-employees, the Company recognizes expense on an accelerated attribution method and these equity awards are re-measured at fair value at the end of each reporting period, with the changes in fair value recorded to stock-based compensation expense in the period in which the change occurs. ● The fair value of Performance Stock Units (“PSUs”) that have operational measurement goals, are measured at the market price of the Company’s stock on the date of grant. PSUs with market-based measurement goals are valued using the Monte-Carlo simulation option-pricing model. The Monte-Carlo simulation option-pricing model uses the same input assumptions as the Black-Scholes model, however, it further incorporates into the fair-value determination the possibility that the market condition may not The Company recognizes share-based compensation expense for the portion of the equity award that is expected to vest over the requisite service period for those awards and develops an estimate of the number of s hare-based awards which will ultimately vest, primarily based on historical experience. The estimated forfeiture rate is reassessed periodically throughout the requisite service period. Such estimates are revised if they differ materially from actual forfeitures. As required, the forfeiture estimates will be adjusted to reflect actual forfeitures when an award vests. For the award types discussed above, if an employee terminates employment prior to being vested in an award, then the award is forfeited. Fo r RSUs and PSUs, the Company issues shares on the vesting dates, net of applicable tax withholding requirements to be paid by the Company on behalf of its employees and non-employees. As a result, the actual number of shares issued will be fewer than the actual number of RSUs and PSUs that vest. The Company records the liability for withholding amounts to be paid by the Company as a reduction to additional paid-in capital when the shares are issued. Cash flows resulting from the tax benefits due to tax de ductions in excess of the compensation cost recognized for stock-based awards for options exercised and for RSUs and PSUs vested during the period (excess tax benefits), are classified as operating cash flows. Income Taxes The Company account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date . For deferred tax assets which are not ncome will be sufficient to recover all of the deferred tax assets. However, should there be a change in the recoverability of the deferred tax assets, the Company could be required to record a valuation allowance against the net carrying value of its deferred tax assets. This would result in an increase to the Company’s tax provision in the period in which they determined that the recovery was not The Company recognizes deferred tax assets to the extent that the Company believes these assets are more likely than n ot to be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of its net recorded amount, it would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. The measurement of deferred taxes often involves an exercise of judgment related to the computation and realization of tax basis. The deferred tax assets and liabilities reflect management’s assessment that tax positions taken, and the resulting tax basis, are more likely than not Valuation allowances are established when necessary to reduce deferred income tax assets to amounts that the Company believes are more likely than not three two The Company establishes reserves for uncertain tax positions in accordance with Income Taxes subtopic of ASC 740 two 1 not 2 not 50 . The impact of an uncertain income tax position on income tax expense must be recognized at the largest amount that is more likely than not not 50% may Co mprehensive Income ( Loss ) Comprehensive income (loss) includes all changes in stockholders’ equity except those resulting from investments or contributions by stockholders. For the periods presented, the accumulated other comprehensive income (loss) consisted solely of the unrealized gains or losses on the Company's available-for-sale investments, net of tax. Foreign Currency The U.S. Dollar is the functional currency of the Company ’s subsidiaries. Monetary assets and liabilities are re-measured into U.S. Dollars at the applicable period end exchange rate. Sales and operating expenses are re-measured at average exchange rates in effect during each period. Gains or losses resulting from foreign currency transactions are included in net income (loss) and are insignificant for each of the three December 31, 2016. three December 31, 2017. Segments The Company operates in one one t of profitability and does not December 31, 2017 2016, 11 Recent Accounting Pr onouncements Not New Revenue Standard : In May 2014, FASB”) issued ASU No. 2014 09, 2014 09 first 2018. The New Revenue Standard’s core principle is that a reporting entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying this new guidance to contracts within its scope, an entity will: ( 1 identify the contract(s) with a customer; ( 2 identify the performance obligation in the contract; ( 3 determine the transaction price; ( 4 allocate the transaction price to the performance obligations in the contract; and ( 5 recognize revenue when (or as) the entity satisfies a performance obligation. The Company will adopt the New Revenue Standard in the first 2018 Upon adoption, the Company expects to record an adjustment to retained earnings for the following items in the first 2018: ● Adjustment to its deferred revenue balance for the differences in the amount of revenue recognition for the Company ’s revenue streams as a result of allocation of revenue based on standalone selling prices to the Company’s various performance obligations. ● Adjustment for capitalizing the incremental contract acquisition costs , such as sales commissions paid in connection with system sales with multi-year service contracts. These contract acquisition costs will be capitalized and amortized over the estimated customer life under the New Revenue Standard. Under the prior guidance, the Company expensed such costs when incurred. ● Adjustment for accru ing financing costs for multi-year post-warranty service for customers who pay more than one Impact of the adoption of the New Revenue Standard is expected to result in a net increase in the Company's retained earnings by approximately $4.8 $5.5 first 2018. In pr eparation of adopting the New Revenue Standard, the Company has implemented additional internal controls and is enhancing its processes to enable future preparation of financial information in accordance with the New Revenue Standard. The New Revenue Standard requires significantly expanded disclosures about revenue in the Company’s financial statement beginning with the first 2018. Pursuant to ASC paragraphs 606 10 55 30 55 34 460 10 25 6, The New Revenue Standard is principle based and interpretation of those principles may may counting profession work to implement this new standard. While substantially complete, the Company is still in the process of finalizing its evaluation of the effect of the New Revenue Standard and will finalize its accounting assessment and quantitative impact of the adoption of the New Revenue Standard during the first 2018. may Other Accounting Pronouncements : In February 2016, No. 2016 02, 842 first 2019 ’s customers finance purchases of its system products through third not not January 1, 2019. In August 2016, 2016 15, 230 first 2018. In October 2016, No. 2016 16, 740 a-Entity Transfer of Assets Other than Inventory, which requires the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. This ASU will be effective for the Company in the first 2018. not In November 2016, 2016 18, 320 amendment requires entities to include restricted cash and restricted cash equivalents in its cash and cash equivalents in the statement of cash flow. The amendment will be effective for the Company in the first 2018 not In January 2017, the Step 2 first 2021. not Recently Adopte d Accounting Standards In January 2017, the Company ASU”) 2015 11, Simplifying the Measurement of Inventory no

Note 3 - Investment Securities

Note 3 - Investment Securities	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Cash, Cash Equivalents, and Marketable Securities [Text Block]	NOTE 3 —INVESTMENT SECURITIES The following tables summarize cash, cash equivalents and marketable securities (in thousands): December 31, 2017 2016 Cash and cash equivalents: Cash $ 14,058 $ 6,672 Cash equivalents: Money market funds 126 6,053 Commercial paper — 1,050 Total cash and cash equivalents 14,184 13,775 Marketable securities: U.S. government notes 11,870 8,398 U.S. government agencies — 3,916 Municipal securities 200 1,325 Commercial paper 1,833 12,299 Corporate debt securities 7,825 14,361 Total marketable securities 21,728 40,299 Total cash, cash equivalents and marketable securities $ 35,912 $ 54,074 The following table summarizes unrealized gains and losses related to the Company’s marketable investments (in thousands): December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Market Value Cash and cash equivalents $ 14,184 $ — $ — $ 14,184 Marketable investments U.S. government notes 11,885 — (15 ) 11,870 U.S. government agencies — — — — Municipal securities 201 — (1 ) 200 Commercial paper 1,836 — (3 ) 1,833 Corporate debt securities 7,838 2 (15 ) 7,825 Total marketable securities 21,760 2 (34 ) 21,728 Total cash, cash equivalents and marketable securities $ 35,944 $ 2 $ (34 ) $ 35,912 December 31, 201 6 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Market Value Cash and cash equivalents $ 13,775 $ — $ — $ 13,775 Marketable investments U.S. government notes 8,403 4 (9 ) 8,398 U.S. government agencies 3,918 — (2 ) 3,916 Municipal securities 1,325 — — 1,325 Commercial paper 12,299 2 (2 ) 12,299 Corporate debt securities 14,366 3 (8 ) 14,361 Total marketable securities 40,311 9 (21 ) 40,299 Total cash, cash equivalents and marketable securities $ 54,086 $ 9 $ (21 ) $ 54,074 No 12 December 31, 201 7 2016 . The following table summarizes the estimated fair value of the Company’s marketable investments classified by the contractual maturity date of the security as of December 31, 2017 ( Amount Due in less than one year (fiscal year 201 8) $ 19,109 Due in 1 to 3 years (fiscal year 2019) 2,619 Total marketable securities $ 21,728 Fair Value Measurements The following table summarizes financial assets measured and recognized at fair value on a recurring basis and classified under the appropriate level of the fair value hierarchy as described above (in thousands): December 31, 2017 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 126 $ — $ — $ 126 Commercial paper — — — — Short term marketable investments: Available-for-sale securities — 21,728 — 21,728 Total assets at fair value $ 126 $ 21,728 $ — $ 21,854 December 31, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 6,053 $ — $ — $ 6,053 Commercial paper — 1,050 — 1,050 Short term marketable investments: Available-for-sale securities — 40,299 — 40,299 Total assets at fair value $ 6,053 $ 41,349 $ — $ 47,402 The Company ’s Level 1 2 may two 2 December 31, 2017 36 no December 31, 2017 2016.

Note 4 - Balance Sheet Detail

Note 4 - Balance Sheet Detail	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	NOTE 4 —BALANCE SHEET DETAIL Inventories Inventories consist of the following (in thousands): December 31, 2017 2016* Raw materials $ 19,160 $ 9,072 Work in process 2,744 1,894 Finished goods 6,878 4,011 Total $ 28,782 $ 14,977 * The Raw materials balance in prior year was reclassified for consistency with current year. Property and Equipment, net Property, plant and equipment is recorded at cost less allowances for depreciation. The straight-line method of depreciation is used for all property and equipment. Property and equipment, net, consists of the following (in thousands): December 31, 2017 2016 Leasehold improvements $ 640 $ 652 Office equipment and furniture 2,370 2,973 Machinery and equipment 6,277 5,435 9,287 9,060 Less: Accumulated depreciation (7,191 ) (7,153 ) Total Property and equipment, net $ 2,096 $ 1,907 Included in machinery and equipment are financed vehicles used by the Company’s North American sales employees. As of December 31, 2017 2016, $1.6 $1.4 $725,000 $492,000 Goodwill and Other Intangible Assets Goodwill and other intangible assets comprise a patent sublicense acquired from Palomar in 2006, ’s aesthetic business unit, and, customer relationships in the Benelux countries acquired from a former distributor in 2013. December 31, 2017 2016 Gross Carrying Amount Accumulated Amortization & Impairment Amount Net Amount December 31, 2017 Patent sublicense $ 1,218 $ 1,218 $ — Customer relationship intangible related to acquisition 2,510 2,510 — Other identified intangible assets related to acquisition 780 780 — Other intangible 155 155 — Goodwill 1,339 — 1,339 Total $ 6,002 $ 4,663 $ 1,339 December 31, 2016 Patent sublicense $ 1,218 $ 1,218 $ — Customer relationship intangible related to acquisition 2,510 2,508 2 Other identified intangible assets related to acquisition 780 780 — Other intangible 155 155 — Goodwill 1,339 — 1,339 Total $ 6,002 $ 4,661 $ 1,341 Amortization expense in the 201 7, 2016, 2015 $2,000, $141,000, $452,000, no December 31, 2017. Accrued Liabilities Accrued liabilities consist of the following (in thousands): December 31, 2017 2016 Accrued payroll and related expenses $ 12,567 $ 9,036 Sales and marketing accruals 3,710 706 Accrued sales tax 2,920 2,373 Warranty liability 3,508 2,461 Other accrued liabilities 4,143 2,821 Total $ 26,848 $ 17,397

Note 5 - Warranty and Service C

Note 5 - Warranty and Service Contracts	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	NOTE 5 —WARRANTY AND SERVICE CONTRACTS The Company has a direct field service organization in the U.S. Internationally, the Company provides direct service support through its wholly-owned subsidiaries in Australia, Belgium, Canada, France, Hong Kong, Japan, and Switzerland, as well as through third not third After the original warranty period, maintenance and support are offered on a service contract basis or on a time and materials basis. The Company provides for the estimated cost to repair or replace products under warranty at the time of sale. Warranty Accrual (in thousands) : December 31, 2017 2016 Balance at beginning of year $ 2,461 $ 1,819 Add: Accruals for warranties issued during the year 7,583 5,375 Less: Settlements and expirations during the year (6,536 ) (4,733 ) Balance at end of year $ 3,508 $ 2,461 Deferred Service Contract Revenue (in thousands) : December 31, 2017 2016 Balance at beginning of year $ 9,431 $ 10,469 Add: Payments received 14,369 12,344 Less: Revenue recognized (13,081 ) (13,382 ) Balance at end of year $ 10,719 $ 9,431 Costs incurred under service contracts in 201 7, 2016 and 2015 amounted to $6.0 $6.7 $6.2

Note 6 - Stockholders' Equity,

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	NOTE 6 —STOCKHOLDERS’ EQUITY, STOCK PLANS AND STOCK-BASED COMPENSATION EXPENSE As of December 31, 2017, 2004 1998 In 1998, 1998 or 1998 4,650,000 On January 12, 2004, 2004 1,750,000 2004 2004 1998 1998 2012 2004 2.12 Options granted under the 1998 2004 may may 2004 Incentive Plan. Incentive stock options may four 25% first 1/48th 2013 2012 three one third one 1/36th 2014 not 2013 2012 seven In accordance with the 2004 2012, ’s non-employee directors were granted $60,000 2012, $60,000 one December 31, 2017, 2016 2015, 21,605, 45,350 21,020 2016 6,500 one four . In the years ended December 31, 2017, 2016 2015 ’s Board of Directors granted 270,707, 229,865 107,417 one fourth one one fourth three one third one one third two December 15, 2017, 100,000 15%, 15%, 25% 45% third fourth In the years ended December 31, 2017, 2016 2015 ’s Board of Directors granted its executive officers and certain senior management employees 117,418, 204,976 74,667 2017, 104,500 1 2 12,918 October 31, 2017 two 2016 2015 12 8.5 2017, 2016 2015 2015 2015. 2004 On January 12, 2004, 2004 2004 2004 2004 six 2004 first i. 600,000 ii. 2.0% such date; or iii. an amount as determined by the Board of Directors. The Company ’s Board of Directors did not January 1, 2018, 2017 2016. 85% six December 31, 2017, 2016 2015, 2004 78,479, 79,922 55,872 December 31, 2017, 691,584 Option Activity Activity under the 1998 2004 Options Outstanding Shares Available For Grant Number of Shares Weighted- Average Exercise Price Weighted-Average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in $ millions ) (1) Balances as of December 31, 2014 129,760 3,462,567 $ 9.39 3.4 $ 5.7 Additional shares reserved (2) 1,300,000 — Options granted (129,000 ) 129,000 $ 13.26 Options exercised — (1,141,904 ) $ 9.20 Options cancelled (expired or forfeited) 300,866 (300,866 ) $ 12.37 Stock awards granted (430,580 ) — — Stock awards cancelled (expired or forfeited) 92,379 — — Balances as of December 31, 2015 1,263,425 2,148,797 $ 9.31 3.4 $ 7.9 Options granted (162,000 ) 162,000 $ 11.55 Options exercised — (1,051,138 ) $ 8.89 Options cancelled (expired or forfeited) 143,187 (143,187 ) $ 12.93 Stock awards granted (1,018,005 ) — — Stock awards cancelled (expired or forfeited) 495,050 — — Balances as of December 31, 201 6 721,657 1,116,472 $ 9.56 3.7 $ 8.7 Options granted (278,250 ) 278,250 $ 31.00 Options exercised — (488,398 ) $ 8.96 Options cancelled (expired or forfeited) 66,405 (66,405 ) $ 16.54 Stock awards granted (873,881 ) — — Stock awards cancelled (expired or forfeited) 258,935 — — Additional shares reserved (3) 1,600,000 — — Balances as of December 31, 2017 1,494,866 839,919 $ 16.46 3.99 $ 24.4 Exercisable as of December 31, 2017 467,794 $ 9.53 2.74 $ 16.8 Vested and expected to vest, net of estimated forfeitures, as of December 31, 2017 789,779 $ 15.61 3.86 $ 23.6 ( 1 Based on the closing stock price of the Company ’s stock of $ 45.3 5 on December 31 , 2017 , $ 17.35 on December 30 , 2016 , $ 12.79 on December 31 2015 and $10. 68 on December 31 , 2014 . ( 2 Approved by stockholders in 2015. ( 3 Approved by the board of directors and stockholders in 2017. The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the aggregate difference between the Company ’s closing stock price on the last trading day of the fiscal year 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, 2017. 2017, 2016 2015 $8.0 $3.6 $5.1 December 31, 2017 Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding Weighted-Average Remaining Contractual Life (in years) Number Outstanding Weighted-Average Exercise Price $6.88 – $7.15 84,739 1.43 84,739 $ 6.92 $7.44 – $8.72 15,978 0.87 15,978 8.30 $8.80 141,956 2.45 141,956 8.80 $9.28 – $9.97 95,535 3.24 73,402 9.69 $10.03 – $10.86 88,044 4.46 51,517 10.38 $10.90 – $11.67 91,021 4.22 50,356 11.36 $11.98 - $17.90 109,896 4.66 49,033 13.36 $18.55 – $25.70 88,500 5.87 813 18.55 $39.30 77,000 6.83 — — $47.40 47,250 6.96 — — $6.88 – $47.40 839,919 4.11 467,794 $ 9.53 Stock Awards (RSU and PSU) Activity Table Information with respect to RSUs and PSUs activity is as follows (in thousands): Number of Shares Weighted - Average Grant- Date Fair Value Aggregate Fair Value (1) (in thousands) Aggregate Intrinsic Value (2) (in thousands) Outstanding at December 31, 2014 434,321 $ 9.31 $ 4,639 Granted 203,104 $ 14.81 Vested (3) (222,220 ) $ 11.79 $ 3,285 (4) Forfeited (43,575 ) $ 9.09 Outstanding at December 31, 2015 371,630 $ 12.39 $ 4,753 Granted 480,191 $ 10.80 Vested (3) (172,990 ) $ 12.56 $ 1,906 (5) Forfeited (233,514 ) $ 11.36 Outstanding at December 31, 2016 445,317 $ 11.15 $ 7,726 Granted 412,208 $ 28.74 Vested (3) (224,799 ) $ 10.91 $ 5,168 (6) Forfeited (122,139 ) $ 13.56 Outstanding at December 31, 2017 510,587 $ 24.88 $ 23,155 ( 1 Represents the value of the Company ’s stock on the date that the restricted stock units and performance stock units vest. ( 2 Based on the closing stock price of the Company ’s stock of $ 45.35 on December 31, 201 7 , $ 17.35 on December 31, 2016 , $ 12.79 on December 31 , 2015 and $10. 68 on December 30 , 2014 . ( 3 The number of restricted stock units vested includes shares that the Company withheld on behalf of the employees to satisfy the statutory tax withholding requirements. ( 4 On the grant date, the fair value for these vested awards was $ 2.6 . ( 5 On the grant date, the fair value for these vested awards was $2. 2 million. ( 6 On the grant date, the fair value for these vested awards was $2. 5 million. Stock-Based Compensation Stock-based compensation expense for the year s ended December 31, 2017, 2016 2015 Year Ended December 31, 2017 201 6 2015 Stock options $ 815 $ 989 $ 1,438 RSUs 1,813 1,508 1,297 PSUs 2,093 967 1,167 ESPP 389 249 182 Total stock-based compensation expense $ 5,110 $ 3,713 $ 4,084 As of December 31, 201 7, $11.5 2.77 $252,000, 0.33 The Company issues new shares of common stock upon the exercise of stock options, vesting of RSUs and PSUs, and the issuance of ESPP shares. The amount of cash received from these issuances, net of taxes withheld and paid, in 2017, 2016 2015 $4.0 $9.5 $10.1 Total stock-based compensation expense recognized during the year ended December 31, 2017, 2016 2015 Year Ended December 31, 2017 2016 2015 Cost of revenue $ 660 $ 341 $ 447 Sales and marketing Employee 1,629 1,179 1,054 Non-employee 13 - - Research and development 936 596 662 General and administrative 1,872 1,597 1,921 Total stock-based compensation expense $ 5,110 $ 3,713 $ 4,084 Valuation Assumptions and Fair Value of Stock Options and ESPP Grants The Company uses the Black-Scholes option pricing model to estimate the fair value of options granted under its equity incentive plans and rights to acquire stock granted under its employee stock purchase plan. The Company based the weighted average estimated values of employee stock option grants and rights granted under the employee stock purchase plan, as well as the weighted average assumptions used in calculating these values, on estimates at the date of grant, as follows: Stock Options Stock Purchase Plan 2017 2016 2015 2017 2016 2015 Expected term (in years) (1) 3.70 3.83 3.24 0.50 0.50 0.50 Risk-free interest rate (2) 1.73 % 1.09 % 0.90 % 1.14 % 0.46 % 0.17 % Volatility (3) 40 % 40 % 30 % 42 % 39 % 36 % Dividend yield (4) — % — % — % — % — % — % Weighted average estimated fair value at grant date $ 9.98 $ 3.72 $ 4.78 $ 8.21 $ 3.22 $ 3.51 ( 1 The expected term represents the period during which the Company ’s stock-based awards are expected to be outstanding. The estimated term is based on historical experience of similar awards, giving consideration to the contractual terms of the awards, vesting requirements, and expectation of future employee behavior, including post-vesting terminations. The expected term of g roups of employees that have similar historical exercise patterns has been considered separately for valuation purposes. ( 2 The risk-free interest rate is based on U.S. Treasury debt securities with maturities close to the expected term of the option as of the date of grant. ( 3 Estimated volatility is based on historica l volatility. The Company also considers implied volatility when there is sufficient volume of freely traded options with comparable terms and exercise prices in the open market. ( 4 The Company has not not expect to do so in the foreseeable future. The Company periodically estimates forfeiture rates based on its historical experience within separate groups of employees and adjusts the stock-based payment expense accordingly. The forfeiture rates used in 2017 0% 13%. Non-Employee Stock-Based Compensation Stock-based compensation expense related to stock options granted to non-employees is recognized based on the fair value of the stock options, determined using the Black-Scholes option pricing model, as they are earned. The awards generally vest over the time period the Company expects to receive services from the nonemployee. The Company revalues stock options granted to non-employees at each reporting date as the underlying equity instruments vest. The Company granted 7,745 2,478 one December 31, 2017 zero 2016 2015. 7,745 4 25% first 1/48 th 2,478 4 25% Stock Awards Withholdings For Stock Awards granted to employees, the number of shares issued on the date the Stock Awards vest is net of t he tax withholding requirements paid on behalf of the employees. In 2017, 2016 2015, 64,490, 56,157, 68,101 $1,469,000, $619,000 $1.0 not Stock Repurchase Program As of December 31, 2014, $10.0 Stock Repurchase Program. On February 18, 2015, the Company's $10 $40 February 8, 2016 the $10 December 31, 2016 2015, 455,311 2,818,038 $4.9 $40.0 , respectively. On February 13, 2017 July 28, 2017, the Company's Board of Directors approved the expansion of its Stock Repurchase Program by an additional $5 $25 , respectively. In the year ended December 31, 2017, the Company 1,022,602 $35.2 December 31, 2017 .

Note 7 - Lease Termination Inco

Note 7 - Lease Termination Income	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Lease Termination Income [Text Block]	NOTE 7 — LEASE TERMINATION INCOME On May 2, 2017, the Company entered into a building lease with the intent to relocate its corporate headquarters to a new facility in Fremont, California. On July 6, 2017, $4.0 December 31, 2017 January 31, 2023. $4.0 December 31, 2017.

Note 8 - Income Taxes

Note 8 - Income Taxes	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 8 —INCOME TAXES The Company files income tax returns in the U.S. federal and various state and local jurisdictions and foreign jurisdictions. For financial statement reporting purposes, income (loss) before provision for income taxes inclu de the following (in thousands): Year Ended December 31, 2017 2016 2015 U.S. $ 11,203 $ 2,207 $ (4,588 ) International 757 513 360 Income (loss) before income taxes $ 11,960 $ 2,720 $ (4,228 ) The federal and statement income tax provision (benefit) is summarized as follows (in thousands): Year Ended December 31, 2017 2016 2015 Current: Federal $ 148 $ — $ (7 ) State 71 16 23 International 511 131 218 Total Current 730 147 234 Deferred: Federal (17,393 ) (24 ) 33 State (1,348 ) (2 ) — International (22 ) 22 (55 ) Total deferred tax benefit (18,763 ) (4 ) (22 ) Total tax expense (benefit) $ (18,033 ) $ 143 $ 212 Deferred income taxes reflect the net tax effects of (a) temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, an d (b) operating losses and tax credit carryforwards. The tax effects of significant items comprising the Company’s deferred taxes after December 31, 2017 and 2016 December 31, 2017 2016 Deferred Tax Assets: Net operating loss carryforwards $ 8,604 $ 15,487 Stock-based compensation 1,179 1,486 Other accruals and reserves 1,663 2,160 Credits 11,781 9,006 Foreign 399 377 Accrued warranty 847 890 Depreciation and amortization 1,592 2,627 Other 303 95 Deferred tax asset before valuation allowance 26,368 32,128 Valuation allowance (7,242 ) (31,751 ) Deferred tax asset after valuation allowance 19,126 377 Deferred tax liability on goodwill (71 ) (85 ) Net d eferred tax asset $ 19,055 $ 292 Net operating losses and tax credit carryforwards as of December 31, 2017 were (in thousands): Amount Expiration Years Net operating losses, federal $ 34,700 2029-2035 Net operating losses, state 20,773 Various Tax credits, federal 6,109 2024-2036 Tax credits, state $ 6,872 Various The effective tax rate of the Company’s provision (benefit) for income taxes differs from the federal statutory rate as follows: Year Ended December 31, 2017 2016 2015 Statutory rate 34.00 % 34.00 % 34.00 % State tax (5.59 ) (14.56 ) 1.94 General Business Credits (2.72 ) (9.25 ) 15.92 Stock-based compensation (21.55 ) 14.36 (19.19 ) Foreign Rate Differential (0.50 ) (0.16 ) (1.47 ) Change in Federal Tax Rate 60.98 — — Other * 0.65 (2.15 ) (1.35 ) Meals and Entertainment* 2.15 7.56 (3.23 ) Valuation allowance (218.17 ) (24.57 ) (31.63 ) Effective tax rate (150.75 ) % 5.23 % (5.01 )% * Other balance in 2016 2015 The Company assesses the ability to realize its net deferred tax assets by evaluating all available evidence, both positive and negative, including ( 1 2 3 4 As of December 31, 2017 2016, ’s deferred tax assets were primarily comprised of U.S. Net Operating Loss (“NOL”), tax credit and other deferred tax assets relating to book-to-tax temporary differences. From the third 2009, not not September 30, 2017 . As of December 31, 2017, pany determined that it is more likely than not $26.3 As of each reporting date, the Company ’s management considers new evidence, both positive and negative, that could impact management’s view with regard to future realization of deferred tax assets. As of December 31, 2017, three December 31, 2017, not $26.3 At December 31, 2017, $34.7 $20.8 ing loss carryforwards, if not 2029 2035. 31, 2017, $6.1 $6.6 $0.3 2024, no 2021. The utilization of NOL carryforwards and tax credits may 382 383 Uncertain Tax Positions The Company establishes reserves fo r uncertain tax positions based on the largest amount that is more-likely-than- not not 50% two . The first not second 50% no not The Company files U.S., state, and foreign income tax returns in jurisdictions with varying statutes of limitat ions. The 2005 2017 2011 2017 The following table summarizes the activity related to the Company's unrecognized tax benefits for the year ended December 201 7 December 2016 ( 2017 2016 Beginning of the year unrecognized tax benefits $ 707 $ 651 Increases related to prior year tax positions 643 — Increases related to current year tax positions 169 56 End of the year unrecognized tax benefits $ 1,519 $ 707 It is the Company ’s policy to recognize interest and penalties related to income tax matters in income tax expense. As of December 31, 2017, 97,298 2017 On December 22, 2017, 2017 “2017 2017 not 35% 21%; one December 31, 2017; x ’s compensation limitation. In December 2017, No. 118 118” one 2017 2017 2017 21% may 2017 not 2017 ASC 740 January 1, 2018. 21% $7.3 At December 31, 2017, 2017 one 2017 one not 2017 no December 31, 2017. The Company's current effective tax r ate does not The Company considered the impact of the Act on its need for valuation allowance assessment. The Company’s ASC 740 30

Note 9 - Net Income (Loss) Per

Note 9 - Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Earnings Per Share [Text Block]	NOTE 9 —NET INCOME (LOSS) PER SHARE Basic net income (loss) per share is computed using the weighted-average number of shares outstanding during the period. In periods of net income, diluted shares outstanding include the dilutive effect of in-the-money equity awards (stock options, rest ricted stock units, performance stock units and employee stock purchase plan contributions), which is calculated based on the average share price for each fiscal period using the treasury stock method. In accordance with ASC 718, . Dil uted earnings per share is the same as basic earnings per share for the periods in which the Company had a net loss because the inclusion of outstanding common stock equivalents would be anti-dilutive. The following table sets forth the computation of basic and diluted net income (loss) and the weighted average number of shares used in computing basic and diluted net income (loss) per share (in thousands, except per share data): Year Ended December 31, 2017 2016 2015 Numerator: Net Income (loss) $ 29,993 $ 2,577 $ (4,440 ) Denominator: Weighted-average shares outstanding in basic calculation 13,873 13,225 13,960 Add: dilutive effect of potential common shares 855 528 — Weighted-average shares used in computing diluted net income per share 14,728 13,753 13,960 Net income (loss) per share: Net income (loss) per share, basic $ 2.16 $ 0.19 $ (0.32 ) Net income (loss) per share, diluted $ 2.04 $ 0.19 $ (0.32 ) T he following number of weighted shares outstanding, prior to the application of the treasury stock method, were excluded from the computation of diluted net income (loss) per common share for the years presented because including them would have had an anti-dilutive effect (in thousands): Year Ended December 31, 201 7 201 6 201 5 Options to purchase common stock 42 220 2,575 Restricted stock units 9 24 296 Employee stock purchase plan shares — — 93 Performance stock units — — 24 Total 51 244 2,988

Note 10 - Defined Contribution

Note 10 - Defined Contribution Plan	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	NOTE 10 —DEFINED CONTRIBUTION PLAN In the U.S., the Company has an employee savings plan (“ 401 401 may 401 100% 2017, 2016 2015, 401 $288,000, $262,000 $244,000 For the Company ’s Japanese subsidiary, a discretionary employee retirement plan has been established. In addition, for some of the Company’s other foreign subsidiaries, the Company deposits funds with insurance companies, third December 31, 2017, three not

Note 11 - Segment Information a

Note 11 - Segment Information and Revenue by Geograpy and Products	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	NOTE 11 —SEGMENT INFORMATION AND REVENUE BY GEOGRAPY AND PRODUCTS Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or decision making group, in deciding how to allocate resources a nd in assessing performance. The Company’s chief operating decision maker, as defined under the FASB’s ASC 280 one no one one The following table summarizes revenue by geographic region, based on the location of the customer, and by product category (in thousands): Year Ended December 31, 201 7 201 6 201 5 Revenue mix by geography: United States $ 94,581 $ 65,513 $ 48,916 Japan 17,264 14,727 11,504 Asia, excluding Japan 13,719 13,445 15,596 Europe 8,317 7,539 7,728 Rest of the world 17,612 16,832 11,017 Consolidated total $ 151,493 $ 118,056 $ 94,761 Revenue mix by product category: Products $ 125,883 $ 92,721 $ 71,223 Hand Piece Refills 2,435 2,498 2,910 Skincare 4,342 3,809 2,889 Total product revenue 132,660 99,028 77,022 Service 18,833 19,028 17,739 Consolidated total $ 151,493 $ 118,056 $ 94,761

Note 12 - Commitments and Conti

Note 12 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 1 2 —COMMITMENTS AND CONTINGENCIES Facility Leases As of December 31, 2017, Year Ending December 31, Amount 201 8 $ 2,891 201 9 2,871 2020 2,815 2021 2,515 202 2 2,495 2023 and thereafter 214 Future minimum lease payments $ 13,801 Gross rent expense recognized in the years ended December 31, 2017, Vehicle Leases As of December 31, 201 7, Year Ending December 31, Amount 201 8 $ 472 201 9 381 20 20 104 Future minimum lease payments $ 957 Purchase Commitments The Company maintains certain open inventory purchase commitments with its suppliers to ensure a smooth and continuous supply for key components. The Company’s liability in these purchase commitments is generally restricted to a forecasted time-horizon as agreed between the parties. These forecasted time-horizons can vary among different suppliers. The Company’s open inventory purchase commitments with its suppliers were not December 31, 2017 . Indemnifications In the normal course of business, the Company enters into agreements that contain a variety of representations, w arranties, and indemnification obligations. For example, the Company has entered into indemnification agreements with each of its directors and executive officers and certain key employees. The Company’s exposure under its various indemnification obligations is unknown and not may not Contingencies The Company is named from time to time as a party to other legal proceeds product liability, commercial disputes, employee disputes, and contractual lawsuits in the normal course of business. A liability and related charge are recorded to earnings in the Company’s consolidated financial statements for legal contingencies when the loss is considered probable and the amount can be reasonably estimated. The assessment is re-evaluated each accounting period and is based on all available information, including discussion with outside legal counsel. If a reasonable estimate of a known or probable loss cannot be made, but a range of probable losses can be estimated, the low-end of the range of losses is recognized if no not December 31, 2017 2016, $91,000 $138, 000, The Company does not Certain of these lawsuits and claims are described in further detail below. It is not be and the Company cannot guarantee that any resolution will be reached on commercially reasonable terms, if at all. In January, 2018, that Nicholas Brown working for the Company violates certain non-compete provisions of an agreement he was a party to while employed by Plaintiff. The Plaintiff alleges causes of action for breach of contract by Nicholas Brown and intentional interference with contractual relations by the Company. Nicholas Brown was hired by the Company as a sales representative in the Boston area in November 2017. provisions of his agreement are unenforceable as a matter of Massachusetts law. The Company has engaged counsel and intends to defend this matter vigorously. As of December 31, 2017, .

Note 13 - Related Parties

Note 13 - Related Parties	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	NOTE 1 3 —RELATED PARTIES In 2017 2016, $196,000 $182,100, December 31, 2016, 6,500 $87,100, three 33.33% three October 28, 2016, December 31, 2018 $200 40 The Company signed an agreement with a real estate firm, T3 September 2017, T3 visors’ Senior Vice President "Mr. Austin Barrett" is related to Greg Barrett – a member of the Company’s board of directors. In 2017, $38 ,000 T3

Supplementary Financial Data (U

Supplementary Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Quarterly Financial Information [Text Block]	SUPPLEMENT ARY FINANCIAL DATA (UNAUDITED) (In thousands, except per share amounts) Quarter ended: Dec. 31, 2017 Sept. 30, 2017 June 30, 2017 March 31, 2017 Dec. 31, 201 6 Sept. 30, 201 6 June 30, 201 6 March 31, 201 6 Net revenue $ 47,632 $ 38,173 $ 36,389 $ 29,299 $ 37,875 $ 30,281 $ 27,477 $ 22,423 Cost of revenue 20,299 15,963 15,343 13,778 15,962 12,538 11,472 9,949 Gross profit 27,333 22,210 21,046 15,521 21,913 17,743 16,005 12,474 Operating expenses: Sales and marketing 15,362 13,148 12,787 10,773 11,561 10,574 10,712 8,716 Research and development 3,481 3,467 2,981 2,945 2,897 2,914 2,712 2,709 General and administrative 3,947 3,379 3,548 3,216 3,010 2,716 3,997 3,220 Lease termination income - (4,000 ) - - - - - - Total operating expenses 22,790 15,994 19,316 16,934 17,468 16,204 17,421 14,645 Income (loss) from operations 4,543 6,216 1,730 (1,413 ) 4,445 1,539 (1,416 ) (2,171 ) Interest and other income, net 138 197 276 273 (204 ) 166 217 144 Income (loss) before income taxes 4,681 6,413 2,006 (1,140 ) 4,241 1,705 (1,199 ) (2,027 ) Income tax provision (benefit) (18,199 ) 225 59 (118 ) 28 61 30 24 Net income (loss) $ 22,880 $ 6,188 $ 1,947 $ (1,022 ) $ 4,213 $ 1,644 $ (1,229 ) $ (2,051 ) Net income (loss) per share —basic $ 1.66 $ 0.44 $ 0.14 $ (0.07 ) $ 0.31 $ 0.12 $ (0.09 ) $ (0.16 ) Net income (loss) per share —diluted $ 1.57 $ 0.42 $ 0.13 $ (0.07 ) $ 0.30 $ 0.12 $ (0.09 ) $ (0.16 ) Weighted average number of shares used in per share calculations: Basic 13,744 13,973 13,935 13,840 13,591 13,163 13,131 13,010 Diluted 14,569 14,767 14,629 13,840 14,201 13,544 13,131 13,010

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2017
Notes to Financial Statements
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	II CUTERA, INC. VALUATION AND QUALIFYING ACCOUNTS (in thousands) For the Years Ended December 31, 201 7 , 201 6 and 201 5 Balance at Beginning of Year Additions Deductions Balance at End of Year Deferred tax assets valuation allowance Year ended December 31, 2017 $ 31,751 $ 617 $ 25,126 $ 7,242 Year ended December 31, 2016 $ 27,616 $ 6,755 $ 2,620 $ 31,751 Year ended December 31, 2015 $ 26,046 $ 3,327 $ 1,757 $ 27,616 Balance at Beginning of Year Additions Deductions Balance at End of Year Allowance for doubtful accounts receivable Year ended December 31, 2017 $ 21 $ 14 $ 26 $ 9 Year ended December 31, 2016 $ 4 $ 21 $ 4 $ 21 Year ended December 31, 2015 $ — $ 4 $ — $ 4

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]	Principles of Consolidation The Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. All inter-company transactions and balances have been eliminated in consolidation.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of Consolidated Financial Statements in conformity with generally accepted accounting principles in the Un ited States of America (“GAAP”) requires the Company’s management to make estimates and assumptions that affect the amounts reported of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reported periods. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates their estimates, including those related to warranty obligation, sales commission, accounts receivable and sales allowances, valuation of inventories, fair values of acquired intangible assets, useful lives of intangible assets and property and equipment, assumptions regarding variables used in calculating the fair value of the Company's equity award, fair value of investments, contingent liabilities, recoverability of deferred tax assets, and effective income tax rates, among others. Management bases their estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.
Risks and Uncertainties, Policy [Policy Text Block]	Risks and Uncertainties The Company's future results of operations involve a number of risks and uncert ainties. Factors that could affect the Company's future operating results and cause actual results to vary materially from expectations include, but are not may may
Cash and Cash Equivalents Marketable Investments and Long-term Investments [Policy Text Block]	Cash and Cash Equivalents, and Marketable Investments The Company invests it s cash primarily in money market funds and in highly liquid debt instruments of U.S. federal and municipal governments and their agencies, commercial paper and corporate debt securities. All highly liquid investments with stated maturities of three three The Company determines the appropriate classification of its investments in marketable securities at the time of pur chase and re-evaluates such designation at each balance sheet date. The Company’s marketable securities have been classified and accounted for as available-for-sale. Investments with remaining maturities more than one
Fair Value Measurement, Policy [Policy Text Block]	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value. Carrying amounts of the Company’s financial instruments, including cash equivalents, accounts receivable, accounts payable and accrued liabilities, approximate their fair values as of the balance sheet dates because of their generally short maturities. The fair value hierarchy distin guishes between ( 1 2 three 1 3 three 820: ● Level 1: ● Level 2: not 2 ncludes assets and liabilities that are valued using models or other pricing methodologies that do not ● Level 3: no values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inp uts and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value.
Marketable Securities, Policy [Policy Text Block]	Impairment of Marketable Investments After determining the fair value of available-for-sales debt instruments, gains or losses on these securities are recorded to other comprehensive income (loss), until either the security is sold or the Company determines that the decline in value is other-than-temporary. The primary differentiating factors that the Company considers in classifying impairments as either temporary or other-than-temporary impairments are the Company’s intent and ability to retain the investment in the issuer for a period of time sufficient to allow for any anticipated recovery in market value or the maturity of the investment, the length of the time and the extent to which the market value of the investment has been less than cost and the financial condition and near-term prospects of the issuer. There were no December 31, 2017, 2016, 2015 .
Allowances for Sales Returns and Doubtful Accounts [Policy Text Block]	Allowance for Sales Returns and Doubtful Accounts The allowance for sales returns is based on the Company ’s estimates of potential future product returns and other allowances related to current period product revenue. The Company analyzes historical returns, current economic trends and changes in customer demand and acceptance of the Company's products. The allowance for doubtful accounts is based on the Company’s assessment of the collectability of customer accounts and the aging of the related invoices, and represents the Company's best estimate of probable credit losses in its existing trade accounts receivable. The Company regularly reviews the allowance by considering factors such as historical experience, credit quality, the age of the accounts receivable balances, and current economic conditions that may
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of risk consist principally of cash, cash equivalents, marketable investments and accounts receivable. The Company ’s cash and cash equivalents are primarily invested in deposits and money market accounts with three may not The Company invests in debt instruments, including bonds of the U.S. Government, its agencies and municipalities. The Company has also invested in other high grade investments such as commercial paper and corporate bonds. The Company has established guidelines relative to credit ratings, diversification and maturities that seek to maintain safety and liquidity. By policy, the Company restricts its exposure to any single issuer by imposing concentration limits. To minimize the exposure due to adverse shifts in interest rates, the Company maintains investments at an average maturity of generally less than eighteen Accounts receivable are recorded net of an allowance for doubtful accounts, and are typically unsecured and are derived from revenue earned from worldwide customers. The Company controls credit risk through credit approvals, credit limits, and monitoring procedures. The Company performs credit evaluations of its customers and maintains reserves for potential credit losses . As of December 31, 2017 2016, one 12% December 31, 2017, 2016, 2015, 62%, 55%, 52%, 38%, 45%, 48%, No 10% December 31, 2017, 2016, 2015 .
Inventory, Policy [Policy Text Block]	Inventories Inventories are stated at the lower of cost and net realizable value, cost being determined on a standard cost basis which approximates actual cost on a first first Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The cost basis of the Company’s inventory is reduced for any products that are considered excessive or obsolete based upon assumptions about future demand and market conditions. The Company includes demonstration units within inventories. Demonstration units are carried at cost and amortized over an estimated economic life of two As of December 31, 2017 2016, $1. 9 $2.4
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment Property and equipment ar e stated at cost, net of accumulated depreciation. Depreciation recognized is recognized on a straight-line basis over the estimated useful lives of the assets, generally as follows: Useful Lives Leasehold improvements Lesser of useful life or term of lease Office equipment and furniture (in years) 3 Machinery and equipment (in years) 3 Upon sale or retirement of property and equipment, the costs and related accumulated depreciation and amortization are removed from the balance sheet and the resulting gain or loss is reflected in operating expenses. Maintenance and repairs are charged to operations as incurred. Depreciation expense related to property and equipment for 201 7, 2016 2015, $1.0 , $ 0.8 0.7
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]	Goodwill and Other Intangible Assets Goodwill and intangible assets with indefinite useful lives are not for impairment, applying a fair-value based test, at least annually during the fourth may no one December 31, 2017, no December 31, 2017.
Standard Product Warranty, Policy [Policy Text Block]	Warranty Obligations The Company provides a standard one labor and parts necessary to repair the systems during the warranty period. For sales to distributors, the Company generally provides a 14 16 The Company accounts for the estimated warranty cost of the standard warranty coverage as a charge to costs of revenue when revenue is recognized. Factors that affect the Company’s warranty reserves include the number of units sold, historical product performance, and anticipated rates of warranty repairs and the cost per repair. The Company periodically assesses the adequacy of the warranty reserve and adjusts the amount as necessary. To determine the estimated warranty reserve, the Company utilizes actual service records to calculate the average service expense per system and applies this to the equivalent number of units exposed under warranty. The Company updates these estimated charges every quarter.
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition Products revenue is recognized when title and risk of ownership has been transferred, provided that: ● Persuasive evidence of an arrangement exists; ● The price is fixed or determinable; ● Delivery has occurred or services have been rendered; and ● Collectability is reasonably a ssured. Transfer of title and risk of ownership occurs when the product is shipped to the customer or when the customer receives the product, depending on the nature of the arrangement. Revenue is recorded net of customer and distributor discounts. When collectability is not not Multiple-element A rrangements A multiple-element arrangement includes the sale of one one ment arrangements are generally comprised of the following elements that are recognized as separate units of accounting: Product, service contracts , training, and in some cases, marketing support and installation. For multiple-element arrangements, judgments are required as to the allocation of the proceeds received from an arrangement to the multiple elements of the arrangement. For multiple element arrangements the Company allocates revenue to all deliverables based on their relative selling prices in accordance with the Financial Accounting Standards (“FASB”) Accounting Standards Codification (“ASC”) 605 25. third not With respect to the sale of its truSculpt truSculpt not truSculpt truSculpt May 2017, truSculpt 3D . C truSculpt 3D . Revenue from the sale of such refills is recorded as Product revenue in the period in which such sales are made. Customer Marketing Arrangements The Company has a customer marketing and incentive program called “Cutera Bucks” for its North America customers through which it offers various sales incentives and discounts and pays or reimburses customers for qualifying expenses associated with practice set-up, advertising procedures related to the system purchased, and other expenses. The Company records such incentives as a reduction of revenue at the time when the sale of the system is recorded. Service Revenue The Company also offers customers extended service contracts. Revenue under service contracts is recognized on a straight-line basis over the per iod of the applicable service contract. service contract, including installation and training revenue, is recognized when the related services are performed and collectability is reasonably assured . Service revenue billed on a time and material basis, from customers whose systems are not December 31, 201 7, 2016, 2015 $18.8 $19.0 $17.7 Bill and Hold Arrangement In 2017 one third no The Company recognized revenue of $938,000 2017. no 2016 2015.
Cost of Sales, Policy [Policy Text Block]	Cost of Revenue Cost of revenue consists primarily of material, finished and semi-finished products purchased from third olved in the Company's internal manufacturing processes, technology license amortization and royalties, costs associated with product warranties and any inventory or intangible write-downs. The Company's system sales include a control console, universal graphic us er interface, control system software, high voltage electronics and a combination of applications (referred to as hand pieces). Hand pieces are programmed to have a limited number of uses to ensure the safety of the device to patients. The Company sells refurbished hand pieces, or "refills," of its Titan truSculpt 3D , the Company capitalizes the expended hand piece as inventory at the estimated fair value. Cost of revenue includes the costs incurred to refurbish hand pieces.
Research and Development Expense, Policy [Policy Text Block]	Research and Development Expenditures Research and development costs are expensed as incurred and include costs related to research, design, development, testing of products, salaries, benefits and other headcount related costs, facilities, material, third .
Advertising Costs, Policy [Policy Text Block]	Advertising Costs Advertising costs are included as part of sales and marketing expens e and are expensed as incurred. Advertising expenses for 2017, 2016 2015 $1.8 $1.3 $1.2
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-based Compensation The Company accounts for share-based compensation costs in accordance with the accounting standards for share-based compensation, which require that all share-based payments to employees and non-employees be recognized in the consolidated statements of operations based on their fair values. ● The fair value of stock options ("options") on the grant date is estimated using the Black-Scholes option-pricing model using the single-option approach. The Black-Scholes option pricing model requires the use of highly subjective and complex assumptions, including the option's expected term and the price volatility of the underlying stock, to determine the fair value of award. The Company recognizes the expense associated with options using a single award approach over the requisite service period. The Company accounts for all stock options awarded to non-employees at the fair value of the consideration received or the fair value of the equity instrument issued, as calculated using the Black-Scholes model. The Company subjects stock options granted to non-employees to periodic revaluation at each reporting date as the underlying equity instruments vest . ● The fair value of Restricted Stock Units ("RSUs") is based on the stock price on the grant date using a single-award approach. The RSUs are subject to a service vesting condition and are recognized on a straight-line basis over the requisite service period. For RSUs to non-employees, the Company recognizes expense on an accelerated attribution method and these equity awards are re-measured at fair value at the end of each reporting period, with the changes in fair value recorded to stock-based compensation expense in the period in which the change occurs. ● The fair value of Performance Stock Units (“PSUs”) that have operational measurement goals, are measured at the market price of the Company’s stock on the date of grant. PSUs with market-based measurement goals are valued using the Monte-Carlo simulation option-pricing model. The Monte-Carlo simulation option-pricing model uses the same input assumptions as the Black-Scholes model, however, it further incorporates into the fair-value determination the possibility that the market condition may not The Company recognizes share-based compensation expense for the portion of the equity award that is expected to vest over the requisite service period for those awards and develops an estimate of the number of s hare-based awards which will ultimately vest, primarily based on historical experience. The estimated forfeiture rate is reassessed periodically throughout the requisite service period. Such estimates are revised if they differ materially from actual forfeitures. As required, the forfeiture estimates will be adjusted to reflect actual forfeitures when an award vests. For the award types discussed above, if an employee terminates employment prior to being vested in an award, then the award is forfeited. Fo r RSUs and PSUs, the Company issues shares on the vesting dates, net of applicable tax withholding requirements to be paid by the Company on behalf of its employees and non-employees. As a result, the actual number of shares issued will be fewer than the actual number of RSUs and PSUs that vest. The Company records the liability for withholding amounts to be paid by the Company as a reduction to additional paid-in capital when the shares are issued. Cash flows resulting from the tax benefits due to tax de ductions in excess of the compensation cost recognized for stock-based awards for options exercised and for RSUs and PSUs vested during the period (excess tax benefits), are classified as operating cash flows.
Income Tax, Policy [Policy Text Block]	Income Taxes The Company account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date . For deferred tax assets which are not ncome will be sufficient to recover all of the deferred tax assets. However, should there be a change in the recoverability of the deferred tax assets, the Company could be required to record a valuation allowance against the net carrying value of its deferred tax assets. This would result in an increase to the Company’s tax provision in the period in which they determined that the recovery was not The Company recognizes deferred tax assets to the extent that the Company believes these assets are more likely than n ot to be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of its net recorded amount, it would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. The measurement of deferred taxes often involves an exercise of judgment related to the computation and realization of tax basis. The deferred tax assets and liabilities reflect management’s assessment that tax positions taken, and the resulting tax basis, are more likely than not Valuation allowances are established when necessary to reduce deferred income tax assets to amounts that the Company believes are more likely than not three two The Company establishes reserves for uncertain tax positions in accordance with Income Taxes subtopic of ASC 740 two 1 not 2 not 50 . The impact of an uncertain income tax position on income tax expense must be recognized at the largest amount that is more likely than not not 50% may
Comprehensive Income, Policy [Policy Text Block]	Co mprehensive Income ( Loss ) Comprehensive income (loss) includes all changes in stockholders’ equity except those resulting from investments or contributions by stockholders. For the periods presented, the accumulated other comprehensive income (loss) consisted solely of the unrealized gains or losses on the Company's available-for-sale investments, net of tax.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency The U.S. Dollar is the functional currency of the Company ’s subsidiaries. Monetary assets and liabilities are re-measured into U.S. Dollars at the applicable period end exchange rate. Sales and operating expenses are re-measured at average exchange rates in effect during each period. Gains or losses resulting from foreign currency transactions are included in net income (loss) and are insignificant for each of the three December 31, 2016. three December 31, 2017.
Segment Reporting, Policy [Policy Text Block]	Segments The Company operates in one one t of profitability and does not December 31, 2017 2016, 11
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pr onouncements Not New Revenue Standard : In May 2014, FASB”) issued ASU No. 2014 09, 2014 09 first 2018. The New Revenue Standard’s core principle is that a reporting entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying this new guidance to contracts within its scope, an entity will: ( 1 identify the contract(s) with a customer; ( 2 identify the performance obligation in the contract; ( 3 determine the transaction price; ( 4 allocate the transaction price to the performance obligations in the contract; and ( 5 recognize revenue when (or as) the entity satisfies a performance obligation. The Company will adopt the New Revenue Standard in the first 2018 Upon adoption, the Company expects to record an adjustment to retained earnings for the following items in the first 2018: ● Adjustment to its deferred revenue balance for the differences in the amount of revenue recognition for the Company ’s revenue streams as a result of allocation of revenue based on standalone selling prices to the Company’s various performance obligations. ● Adjustment for capitalizing the incremental contract acquisition costs , such as sales commissions paid in connection with system sales with multi-year service contracts. These contract acquisition costs will be capitalized and amortized over the estimated customer life under the New Revenue Standard. Under the prior guidance, the Company expensed such costs when incurred. ● Adjustment for accru ing financing costs for multi-year post-warranty service for customers who pay more than one Impact of the adoption of the New Revenue Standard is expected to result in a net increase in the Company's retained earnings by approximately $4.8 $5.5 first 2018. In pr eparation of adopting the New Revenue Standard, the Company has implemented additional internal controls and is enhancing its processes to enable future preparation of financial information in accordance with the New Revenue Standard. The New Revenue Standard requires significantly expanded disclosures about revenue in the Company’s financial statement beginning with the first 2018. Pursuant to ASC paragraphs 606 10 55 30 55 34 460 10 25 6, The New Revenue Standard is principle based and interpretation of those principles may may counting profession work to implement this new standard. While substantially complete, the Company is still in the process of finalizing its evaluation of the effect of the New Revenue Standard and will finalize its accounting assessment and quantitative impact of the adoption of the New Revenue Standard during the first 2018. may Other Accounting Pronouncements : In February 2016, No. 2016 02, 842 first 2019 ’s customers finance purchases of its system products through third not not January 1, 2019. In August 2016, 2016 15, 230 first 2018. In October 2016, No. 2016 16, 740 a-Entity Transfer of Assets Other than Inventory, which requires the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. This ASU will be effective for the Company in the first 2018. not In November 2016, 2016 18, 320 amendment requires entities to include restricted cash and restricted cash equivalents in its cash and cash equivalents in the statement of cash flow. The amendment will be effective for the Company in the first 2018 not In January 2017, the Step 2 first 2021. not Recently Adopte d Accounting Standards In January 2017, the Company ASU”) 2015 11, Simplifying the Measurement of Inventory no

Note 2 - Summary of Significa24

Note 2 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Property, Plant, and Equipment Useful Lives [Table Text Block]	Useful Lives Leasehold improvements Lesser of useful life or term of lease Office equipment and furniture (in years) 3 Machinery and equipment (in years) 3

Note 3 - Investment Securities

Note 3 - Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Investment [Table Text Block]	December 31, 2017 2016 Cash and cash equivalents: Cash $ 14,058 $ 6,672 Cash equivalents: Money market funds 126 6,053 Commercial paper — 1,050 Total cash and cash equivalents 14,184 13,775 Marketable securities: U.S. government notes 11,870 8,398 U.S. government agencies — 3,916 Municipal securities 200 1,325 Commercial paper 1,833 12,299 Corporate debt securities 7,825 14,361 Total marketable securities 21,728 40,299 Total cash, cash equivalents and marketable securities $ 35,912 $ 54,074
Unrealized Gain (Loss) on Investments [Table Text Block]	December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Market Value Cash and cash equivalents $ 14,184 $ — $ — $ 14,184 Marketable investments U.S. government notes 11,885 — (15 ) 11,870 U.S. government agencies — — — — Municipal securities 201 — (1 ) 200 Commercial paper 1,836 — (3 ) 1,833 Corporate debt securities 7,838 2 (15 ) 7,825 Total marketable securities 21,760 2 (34 ) 21,728 Total cash, cash equivalents and marketable securities $ 35,944 $ 2 $ (34 ) $ 35,912 December 31, 201 6 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Market Value Cash and cash equivalents $ 13,775 $ — $ — $ 13,775 Marketable investments U.S. government notes 8,403 4 (9 ) 8,398 U.S. government agencies 3,918 — (2 ) 3,916 Municipal securities 1,325 — — 1,325 Commercial paper 12,299 2 (2 ) 12,299 Corporate debt securities 14,366 3 (8 ) 14,361 Total marketable securities 40,311 9 (21 ) 40,299 Total cash, cash equivalents and marketable securities $ 54,086 $ 9 $ (21 ) $ 54,074
Investments Classified by Contractual Maturity Date [Table Text Block]	Amount Due in less than one year (fiscal year 201 8) $ 19,109 Due in 1 to 3 years (fiscal year 2019) 2,619 Total marketable securities $ 21,728
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	December 31, 2017 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 126 $ — $ — $ 126 Commercial paper — — — — Short term marketable investments: Available-for-sale securities — 21,728 — 21,728 Total assets at fair value $ 126 $ 21,728 $ — $ 21,854 December 31, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 6,053 $ — $ — $ 6,053 Commercial paper — 1,050 — 1,050 Short term marketable investments: Available-for-sale securities — 40,299 — 40,299 Total assets at fair value $ 6,053 $ 41,349 $ — $ 47,402

Note 4 - Balance Sheet Detail (

Note 4 - Balance Sheet Detail (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, 2017 2016* Raw materials $ 19,160 $ 9,072 Work in process 2,744 1,894 Finished goods 6,878 4,011 Total $ 28,782 $ 14,977 * The Raw materials balance in prior year was reclassified for consistency with current year.
Property, Plant and Equipment [Table Text Block]	December 31, 2017 2016 Leasehold improvements $ 640 $ 652 Office equipment and furniture 2,370 2,973 Machinery and equipment 6,277 5,435 9,287 9,060 Less: Accumulated depreciation (7,191 ) (7,153 ) Total Property and equipment, net $ 2,096 $ 1,907
Schedule of Intangible Assets and Goodwill [Table Text Block]	Gross Carrying Amount Accumulated Amortization & Impairment Amount Net Amount December 31, 2017 Patent sublicense $ 1,218 $ 1,218 $ — Customer relationship intangible related to acquisition 2,510 2,510 — Other identified intangible assets related to acquisition 780 780 — Other intangible 155 155 — Goodwill 1,339 — 1,339 Total $ 6,002 $ 4,663 $ 1,339 December 31, 2016 Patent sublicense $ 1,218 $ 1,218 $ — Customer relationship intangible related to acquisition 2,510 2,508 2 Other identified intangible assets related to acquisition 780 780 — Other intangible 155 155 — Goodwill 1,339 — 1,339 Total $ 6,002 $ 4,661 $ 1,341
Schedule of Accrued Liabilities [Table Text Block]	December 31, 2017 2016 Accrued payroll and related expenses $ 12,567 $ 9,036 Sales and marketing accruals 3,710 706 Accrued sales tax 2,920 2,373 Warranty liability 3,508 2,461 Other accrued liabilities 4,143 2,821 Total $ 26,848 $ 17,397

Note 5 - Warranty and Service27

Note 5 - Warranty and Service Contracts (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	December 31, 2017 2016 Balance at beginning of year $ 2,461 $ 1,819 Add: Accruals for warranties issued during the year 7,583 5,375 Less: Settlements and expirations during the year (6,536 ) (4,733 ) Balance at end of year $ 3,508 $ 2,461
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]	December 31, 2017 2016 Balance at beginning of year $ 9,431 $ 10,469 Add: Payments received 14,369 12,344 Less: Revenue recognized (13,081 ) (13,382 ) Balance at end of year $ 10,719 $ 9,431 Costs incurred under service contracts in 201 7, 2016 and 2015 amounted to $6.0 million, $6.7 million, and $6.2 million, respectively, and are recognized as incurred.

Note 6 - Stockholders' Equity28

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Share-based Compensation, Stock Options, Activity [Table Text Block]	Options Outstanding Shares Available For Grant Number of Shares Weighted- Average Exercise Price Weighted-Average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in $ millions ) (1) Balances as of December 31, 2014 129,760 3,462,567 $ 9.39 3.4 $ 5.7 Additional shares reserved (2) 1,300,000 — Options granted (129,000 ) 129,000 $ 13.26 Options exercised — (1,141,904 ) $ 9.20 Options cancelled (expired or forfeited) 300,866 (300,866 ) $ 12.37 Stock awards granted (430,580 ) — — Stock awards cancelled (expired or forfeited) 92,379 — — Balances as of December 31, 2015 1,263,425 2,148,797 $ 9.31 3.4 $ 7.9 Options granted (162,000 ) 162,000 $ 11.55 Options exercised — (1,051,138 ) $ 8.89 Options cancelled (expired or forfeited) 143,187 (143,187 ) $ 12.93 Stock awards granted (1,018,005 ) — — Stock awards cancelled (expired or forfeited) 495,050 — — Balances as of December 31, 201 6 721,657 1,116,472 $ 9.56 3.7 $ 8.7 Options granted (278,250 ) 278,250 $ 31.00 Options exercised — (488,398 ) $ 8.96 Options cancelled (expired or forfeited) 66,405 (66,405 ) $ 16.54 Stock awards granted (873,881 ) — — Stock awards cancelled (expired or forfeited) 258,935 — — Additional shares reserved (3) 1,600,000 — — Balances as of December 31, 2017 1,494,866 839,919 $ 16.46 3.99 $ 24.4 Exercisable as of December 31, 2017 467,794 $ 9.53 2.74 $ 16.8 Vested and expected to vest, net of estimated forfeitures, as of December 31, 2017 789,779 $ 15.61 3.86 $ 23.6
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding Weighted-Average Remaining Contractual Life (in years) Number Outstanding Weighted-Average Exercise Price $6.88 – $7.15 84,739 1.43 84,739 $ 6.92 $7.44 – $8.72 15,978 0.87 15,978 8.30 $8.80 141,956 2.45 141,956 8.80 $9.28 – $9.97 95,535 3.24 73,402 9.69 $10.03 – $10.86 88,044 4.46 51,517 10.38 $10.90 – $11.67 91,021 4.22 50,356 11.36 $11.98 - $17.90 109,896 4.66 49,033 13.36 $18.55 – $25.70 88,500 5.87 813 18.55 $39.30 77,000 6.83 — — $47.40 47,250 6.96 — — $6.88 – $47.40 839,919 4.11 467,794 $ 9.53
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	Number of Shares Weighted - Average Grant- Date Fair Value Aggregate Fair Value (1) (in thousands) Aggregate Intrinsic Value (2) (in thousands) Outstanding at December 31, 2014 434,321 $ 9.31 $ 4,639 Granted 203,104 $ 14.81 Vested (3) (222,220 ) $ 11.79 $ 3,285 (4) Forfeited (43,575 ) $ 9.09 Outstanding at December 31, 2015 371,630 $ 12.39 $ 4,753 Granted 480,191 $ 10.80 Vested (3) (172,990 ) $ 12.56 $ 1,906 (5) Forfeited (233,514 ) $ 11.36 Outstanding at December 31, 2016 445,317 $ 11.15 $ 7,726 Granted 412,208 $ 28.74 Vested (3) (224,799 ) $ 10.91 $ 5,168 (6) Forfeited (122,139 ) $ 13.56 Outstanding at December 31, 2017 510,587 $ 24.88 $ 23,155
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]	Year Ended December 31, 2017 201 6 2015 Stock options $ 815 $ 989 $ 1,438 RSUs 1,813 1,508 1,297 PSUs 2,093 967 1,167 ESPP 389 249 182 Total stock-based compensation expense $ 5,110 $ 3,713 $ 4,084
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	Year Ended December 31, 2017 2016 2015 Cost of revenue $ 660 $ 341 $ 447 Sales and marketing Employee 1,629 1,179 1,054 Non-employee 13 - - Research and development 936 596 662 General and administrative 1,872 1,597 1,921 Total stock-based compensation expense $ 5,110 $ 3,713 $ 4,084 Valuation Assumptions and Fair Value of Stock Options and ESPP Grants
Valuation Assumptions and Fair Value of Stock Options and ESPP Grants [Table Text Block]	Stock Options Stock Purchase Plan 2017 2016 2015 2017 2016 2015 Expected term (in years) (1) 3.70 3.83 3.24 0.50 0.50 0.50 Risk-free interest rate (2) 1.73 % 1.09 % 0.90 % 1.14 % 0.46 % 0.17 % Volatility (3) 40 % 40 % 30 % 42 % 39 % 36 % Dividend yield (4) — % — % — % — % — % — % Weighted average estimated fair value at grant date $ 9.98 $ 3.72 $ 4.78 $ 8.21 $ 3.22 $ 3.51

Note 8 - Income Taxes (Tables)

Note 8 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year Ended December 31, 2017 2016 2015 U.S. $ 11,203 $ 2,207 $ (4,588 ) International 757 513 360 Income (loss) before income taxes $ 11,960 $ 2,720 $ (4,228 ) The federal and statement income tax provision (benefit) is summarized as follows (in thousands):
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year Ended December 31, 2017 2016 2015 Current: Federal $ 148 $ — $ (7 ) State 71 16 23 International 511 131 218 Total Current 730 147 234 Deferred: Federal (17,393 ) (24 ) 33 State (1,348 ) (2 ) — International (22 ) 22 (55 ) Total deferred tax benefit (18,763 ) (4 ) (22 ) Total tax expense (benefit) $ (18,033 ) $ 143 $ 212 Deferred income taxes reflect the net tax effects of (a) temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes, an d (b) operating losses and tax credit carryforwards.
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2017 2016 Deferred Tax Assets: Net operating loss carryforwards $ 8,604 $ 15,487 Stock-based compensation 1,179 1,486 Other accruals and reserves 1,663 2,160 Credits 11,781 9,006 Foreign 399 377 Accrued warranty 847 890 Depreciation and amortization 1,592 2,627 Other 303 95 Deferred tax asset before valuation allowance 26,368 32,128 Valuation allowance (7,242 ) (31,751 ) Deferred tax asset after valuation allowance 19,126 377 Deferred tax liability on goodwill (71 ) (85 ) Net d eferred tax asset $ 19,055 $ 292
Summary of Operating Loss Carryforwards and Tax Credit Carryforwards [Table Text Block]	Amount Expiration Years Net operating losses, federal $ 34,700 2029-2035 Net operating losses, state 20,773 Various Tax credits, federal 6,109 2024-2036 Tax credits, state $ 6,872 Various
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year Ended December 31, 2017 2016 2015 Statutory rate 34.00 % 34.00 % 34.00 % State tax (5.59 ) (14.56 ) 1.94 General Business Credits (2.72 ) (9.25 ) 15.92 Stock-based compensation (21.55 ) 14.36 (19.19 ) Foreign Rate Differential (0.50 ) (0.16 ) (1.47 ) Change in Federal Tax Rate 60.98 — — Other * 0.65 (2.15 ) (1.35 ) Meals and Entertainment* 2.15 7.56 (3.23 ) Valuation allowance (218.17 ) (24.57 ) (31.63 ) Effective tax rate (150.75 ) % 5.23 % (5.01 )%
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	2017 2016 Beginning of the year unrecognized tax benefits $ 707 $ 651 Increases related to prior year tax positions 643 — Increases related to current year tax positions 169 56 End of the year unrecognized tax benefits $ 1,519 $ 707 It is the Company ’s policy to recognize interest and penalties related to income tax matters in income tax expense. As of December 31, 2017,

Note 9 - Net Income (Loss) Pe30

Note 9 - Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year Ended December 31, 2017 2016 2015 Numerator: Net Income (loss) $ 29,993 $ 2,577 $ (4,440 ) Denominator: Weighted-average shares outstanding in basic calculation 13,873 13,225 13,960 Add: dilutive effect of potential common shares 855 528 — Weighted-average shares used in computing diluted net income per share 14,728 13,753 13,960 Net income (loss) per share: Net income (loss) per share, basic $ 2.16 $ 0.19 $ (0.32 ) Net income (loss) per share, diluted $ 2.04 $ 0.19 $ (0.32 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Year Ended December 31, 201 7 201 6 201 5 Options to purchase common stock 42 220 2,575 Restricted stock units 9 24 296 Employee stock purchase plan shares — — 93 Performance stock units — — 24 Total 51 244 2,988

Note 11 - Segment Information31

Note 11 - Segment Information and Revenue by Geograpy and Products (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	Year Ended December 31, 201 7 201 6 201 5 Revenue mix by geography: United States $ 94,581 $ 65,513 $ 48,916 Japan 17,264 14,727 11,504 Asia, excluding Japan 13,719 13,445 15,596 Europe 8,317 7,539 7,728 Rest of the world 17,612 16,832 11,017 Consolidated total $ 151,493 $ 118,056 $ 94,761 Revenue mix by product category: Products $ 125,883 $ 92,721 $ 71,223 Hand Piece Refills 2,435 2,498 2,910 Skincare 4,342 3,809 2,889 Total product revenue 132,660 99,028 77,022 Service 18,833 19,028 17,739 Consolidated total $ 151,493 $ 118,056 $ 94,761

Note 12 - Commitments and Con32

Note 12 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Year Ending December 31, Amount 201 8 $ 2,891 201 9 2,871 2020 2,815 2021 2,515 202 2 2,495 2023 and thereafter 214 Future minimum lease payments $ 13,801 Gross rent expense recognized in the years ended December 31, 2017,
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	Year Ending December 31, Amount 201 8 $ 472 201 9 381 20 20 104 Future minimum lease payments $ 957 Purchase Commitments

Supplementary Financial Data 33

Supplementary Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Quarterly Financial Information [Table Text Block]	Quarter ended: Dec. 31, 2017 Sept. 30, 2017 June 30, 2017 March 31, 2017 Dec. 31, 201 6 Sept. 30, 201 6 June 30, 201 6 March 31, 201 6 Net revenue $ 47,632 $ 38,173 $ 36,389 $ 29,299 $ 37,875 $ 30,281 $ 27,477 $ 22,423 Cost of revenue 20,299 15,963 15,343 13,778 15,962 12,538 11,472 9,949 Gross profit 27,333 22,210 21,046 15,521 21,913 17,743 16,005 12,474 Operating expenses: Sales and marketing 15,362 13,148 12,787 10,773 11,561 10,574 10,712 8,716 Research and development 3,481 3,467 2,981 2,945 2,897 2,914 2,712 2,709 General and administrative 3,947 3,379 3,548 3,216 3,010 2,716 3,997 3,220 Lease termination income - (4,000 ) - - - - - - Total operating expenses 22,790 15,994 19,316 16,934 17,468 16,204 17,421 14,645 Income (loss) from operations 4,543 6,216 1,730 (1,413 ) 4,445 1,539 (1,416 ) (2,171 ) Interest and other income, net 138 197 276 273 (204 ) 166 217 144 Income (loss) before income taxes 4,681 6,413 2,006 (1,140 ) 4,241 1,705 (1,199 ) (2,027 ) Income tax provision (benefit) (18,199 ) 225 59 (118 ) 28 61 30 24 Net income (loss) $ 22,880 $ 6,188 $ 1,947 $ (1,022 ) $ 4,213 $ 1,644 $ (1,229 ) $ (2,051 ) Net income (loss) per share —basic $ 1.66 $ 0.44 $ 0.14 $ (0.07 ) $ 0.31 $ 0.12 $ (0.09 ) $ (0.16 ) Net income (loss) per share —diluted $ 1.57 $ 0.42 $ 0.13 $ (0.07 ) $ 0.30 $ 0.12 $ (0.09 ) $ (0.16 ) Weighted average number of shares used in per share calculations: Basic 13,744 13,973 13,935 13,840 13,591 13,163 13,131 13,010 Diluted 14,569 14,767 14,629 13,840 14,201 13,544 13,131 13,010

Schedule II - Valuation and Q34

Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 31, 2017
Notes Tables
Summary of Valuation Allowance [Table Text Block]	Balance at Beginning of Year Additions Deductions Balance at End of Year Deferred tax assets valuation allowance Year ended December 31, 2017 $ 31,751 $ 617 $ 25,126 $ 7,242 Year ended December 31, 2016 $ 27,616 $ 6,755 $ 2,620 $ 31,751 Year ended December 31, 2015 $ 26,046 $ 3,327 $ 1,757 $ 27,616 Balance at Beginning of Year Additions Deductions Balance at End of Year Allowance for doubtful accounts receivable Year ended December 31, 2017 $ 21 $ 14 $ 26 $ 9 Year ended December 31, 2016 $ 4 $ 21 $ 4 $ 21 Year ended December 31, 2015 $ — $ 4 $ — $ 4

Note 2 - Summary of Significa35

Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 0	$ 0	$ 0
Inventories Estimated Useful Lives	2 years
Inventory, Finished Goods, Gross	$ 1,900,000	2,400,000
Depreciation	1,000,000	800,000	700,000
Impairment of Long-Lived Assets Held-for-use	0
Sales Revenue, Services, Net	18,833,000	19,028,000	17,739,000
Advertising Expense	$ 1,800,000	1,300,000	1,200,000
Number of Operating Segments	1
Bill and Hold Arrangement [Member]
Recognition of Deferred Revenue	$ 938,000	$ 0	$ 0
Minimum [Member] | Retained Earnings [Member] | Accounting Standards Update 2014-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	4,800,000
Maximum [Member] | Retained Earnings [Member] | Accounting Standards Update 2014-09 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 5,500,000
Distributors [Member] | Minimum [Member]
Standard Warranty Period	1 year 60 days
Distributors [Member] | Maximum [Member]
Standard Warranty Period	1 year 120 days
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage	12.00%	12.00%
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] | UNITED STATES
Concentration Risk, Percentage	62.00%	55.00%	52.00%
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] | Outside the United States [Member]
Concentration Risk, Percentage	38.00%	45.00%	48.00%

Note 2 - Summary of Significa36

Note 2 - Summary of Significant Accounting Policies - Useful Lives of Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2017
Equipment and Furniture [Member]
Property, plant, and equipment, useful lives (Year)	3 years
Machinery and Equipment [Member]
Property, plant, and equipment, useful lives (Year)	3 years

Note 3 - Investment Securitie37

Note 3 - Investment Securities (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ 0
Maturity of Money Market Fund	3 years

Note 3 - Investment Securitie38

Note 3 - Investment Securities - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Cash and cash equivalents:
Cash	$ 14,058	$ 6,672
Cash equivalents	14,184	13,775
Marketable securities:
Marketable securities	21,728	40,299
Total cash, cash equivalents and marketable securities	35,912	54,074
US Treasury and Government [Member]
Marketable securities:
Marketable securities	11,870	8,398
US Government Agencies Debt Securities [Member]
Marketable securities:
Marketable securities		3,916
US States and Political Subdivisions Debt Securities [Member]
Marketable securities:
Marketable securities	200	1,325
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Marketable securities:
Marketable securities	1,833	12,299
Corporate Debt Securities [Member]
Marketable securities:
Marketable securities	7,825	14,361
Money Market Funds [Member]
Cash and cash equivalents:
Cash equivalents	126	6,053
Commercial Paper [Member]
Cash and cash equivalents:
Cash equivalents		$ 1,050

Note 3 - Investment Securitie39

Note 3 - Investment Securities - Unrealized Gains and Losses Related to Marketable Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash and cash equivalents, Amortized Cost	$ 14,184	$ 13,775	$ 10,868	$ 9,803
Cash and cash equivalents, Fair Market Value	14,184	13,775
Marketable investments, Amortized Cost	21,760	40,311
Marketable investments, Gross Unrealized Gains	2	9
Marketable investments, Gross Unrealized Losses	(34)	(21)
Marketable investments, Fair Market Value	21,728	40,299
Marketable investments, Gross Unrealized Losses	34	21
Marketable investments, Amortized Cost	35,944	54,086
Marketable investments, Fair Market Value	35,912	54,074
US Treasury and Government [Member]
Marketable investments, Amortized Cost	11,885	8,403
Marketable investments, Gross Unrealized Gains		4
Marketable investments, Gross Unrealized Losses	(15)	(9)
Marketable investments, Fair Market Value	11,870	8,398
Marketable investments, Gross Unrealized Losses	15	9
US Government Agencies Debt Securities [Member]
Marketable investments, Amortized Cost		3,918
Marketable investments, Gross Unrealized Gains
Marketable investments, Gross Unrealized Losses		(2)
Marketable investments, Fair Market Value		3,916
Marketable investments, Gross Unrealized Losses		2
US States and Political Subdivisions Debt Securities [Member]
Marketable investments, Amortized Cost	201	1,325
Marketable investments, Gross Unrealized Gains
Marketable investments, Gross Unrealized Losses	(1)
Marketable investments, Fair Market Value	200	1,325
Marketable investments, Gross Unrealized Losses	1
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Marketable investments, Amortized Cost	1,836	12,299
Marketable investments, Gross Unrealized Gains		2
Marketable investments, Gross Unrealized Losses	(3)	(2)
Marketable investments, Fair Market Value	1,833	12,299
Marketable investments, Gross Unrealized Losses	3	2
Corporate Debt Securities [Member]
Marketable investments, Amortized Cost	7,838	14,366
Marketable investments, Gross Unrealized Gains	2	3
Marketable investments, Gross Unrealized Losses	(15)	(8)
Marketable investments, Fair Market Value	7,825	14,361
Marketable investments, Gross Unrealized Losses	$ 15	$ 8

Note 3 - Investment Securitie40

Note 3 - Investment Securities - Maturities of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Due in less than one year (fiscal year 2018)	$ 19,109
Due in 1 to 3 years (fiscal year 2019)	2,619
Total marketable securities	$ 21,728	$ 40,299

Note 3 - Investment Securitie41

Note 3 - Investment Securities - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Cash equivalents	$ 14,184	$ 13,775
Available-for-sale securities	21,728	40,299
Fair Value, Measurements, Recurring [Member]
Available-for-sale securities	21,728	40,299
Total assets at fair value	21,854	47,402
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Total assets at fair value	126	6,053
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities	21,728	40,299
Total assets at fair value	21,728	41,349
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities
Total assets at fair value
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member]
Cash equivalents	126	6,053
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	126	6,053
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents
Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member]
Cash equivalents		1,050
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents		1,050
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents

Note 4 - Balance Sheet Detail42

Note 4 - Balance Sheet Detail (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Capital Leased Assets, Gross	$ 1,600,000	$ 1,400,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	725,000	492,000
Amortization of Intangible Assets	$ 2,000	$ 141,000	$ 452,000

Note 4 - Balance Sheet Detail -

Note 4 - Balance Sheet Detail - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	[1]
Raw materials	$ 19,160	$ 9,072
Work in process	2,744	1,894
Finished goods	6,878	4,011
Total	$ 28,782	$ 14,977
[1]	The Raw materials balance in prior year was reclassified for consistency with current year.

Note 4 - Balance Sheet Detail44

Note 4 - Balance Sheet Detail - Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, plant and equipment, gross	$ 9,287	$ 9,060
Less: Accumulated depreciation	(7,191)	(7,153)
Total Property and equipment, net	2,096	1,907
Leasehold Improvements [Member]
Property, plant and equipment, gross	640	652
Equipment and Furniture [Member]
Property, plant and equipment, gross	2,370	2,973
Machinery and Equipment [Member]
Property, plant and equipment, gross	$ 6,277	$ 5,435

Note 4 - Balance Sheet Detail45

Note 4 - Balance Sheet Detail - Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accumulated amortization and impairment amount	$ 4,663	$ 4,661
Goodwill	1,339	1,339
Goodwill	1,339	1,339
Total	6,002	6,002
Total	1,339	1,341
Patents [Member]
Gross carrying amount	1,218	1,218
Accumulated amortization and impairment amount	1,218	1,218
Net amount
Customer Relationships [Member]
Gross carrying amount	2,510	2,510
Accumulated amortization and impairment amount	2,510	2,508
Net amount		2
Other Intangible Assets [Member]
Gross carrying amount	780	780
Accumulated amortization and impairment amount	780	780
Net amount
Other Intangible [Member]
Gross carrying amount	155	155
Accumulated amortization and impairment amount	155	155
Net amount

Note 4 - Balance Sheet Detail46

Note 4 - Balance Sheet Detail - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accrued payroll and related expenses	$ 12,567	$ 9,036
Sales and marketing accruals	3,710	706
Accrued sales tax	2,920	2,373
Warranty liability	3,508	2,461
Other accrued liabilities	4,143	2,821
Total	$ 26,848	$ 17,397

Note 5 - Warranty and Service47

Note 5 - Warranty and Service Contracts (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred Revenue Costs Incurred	$ 6	$ 6.7	$ 6.2

Note 5 - Warranty and Service48

Note 5 - Warranty and Service Contracts - Summary of Warranties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Balance at beginning of year	$ 2,461	$ 1,819
Add: Accruals for warranties issued during the year	7,583	5,375
Less: Settlements and expirations during the year	(6,536)	(4,733)
Balance at end of year	$ 3,508	$ 2,461

Note 5 - Warranty and Service49

Note 5 - Warranty and Service Contracts - Summary of Deferred Service Contract Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Balance at beginning of year	$ 9,431	$ 10,469
Add: Payments received	14,369	12,344
Less: Revenue recognized	(13,081)	(13,382)
Balance at end of year	$ 10,719	$ 9,431

Note 6 - Stockholders' Equity50

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense (Details Textual) - USD ($)	Dec. 15, 2017	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 28, 2017	Feb. 13, 2017	Feb. 08, 2016	Feb. 18, 2015	Feb. 17, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 8,000,000	$ 3,600,000	$ 5,100,000
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options, Net			$ 4,000,000	$ 9,500,000	$ 10,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			278,250	162,000	129,000
Shares Paid for Tax Withholding for Share Based Compensation			64,490	56,157	68,101
Adjustments Related to Tax Withholding for Share-based Compensation			$ 1,469,000	$ 619,000	$ 1,000,000
Minimum [Member]
Share Based Compensation, Forfeiture Rate		0.00%	0.00%
Maximum [Member]
Share Based Compensation, Forfeiture Rate		13.00%	13.00%
Non-employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			7,745	0
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							3 years
Option Granted Contractual Term							7 years	7 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 11,500,000	$ 11,500,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 281 days
Employee Stock Option [Member] | Non-employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Employee Stock Option [Member] | Non-employees [Member] | Vesting on First Anniversary of Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			25.00%
Employee Stock Option [Member] | Non-employees [Member] | Vesting Each Month After First Anniversary of Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			0.02083%
Restricted Stock Units (RSUs) [Member]
Share Price		$ 45.35	$ 45.35	$ 17.35	$ 12.79	$ 10.68
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value			$ 2,500,000	$ 2,200,000	$ 2,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			412,208	480,191	203,104
Restricted Stock Units (RSUs) [Member] | Non-employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			2,478	0
Restricted Stock Units (RSUs) [Member] | Non-employees [Member] | Vesting Each Anniversary of Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			25.00%
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					255 days
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted			117,418	204,976	74,667
Performance Shares [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			1 year
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted			104,500
Performance Shares [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted		12,918
Stock Purchase Plan [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 252,000	$ 252,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			120 days
1998 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		4,650,000	4,650,000
Two Thousand Four Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,750,000	1,750,000
Number of Stock Awards Counted for Every Share Granted or Canceled			2.12
Share Based Compensation by Share Based Payment Fully Vested Stock Awards Grant Date Fair Value							$ 60,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			21,605	45,350	21,020
Two Thousand Four Equity Incentive Plan [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Option Exercisable in Hundredths			25.00%
Share Price		$ 45.35	$ 45.35	$ 17.35	$ 12.79	$ 10.68
Two Thousand Four Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				4 years
Share Based Compensation by Share Based Payment Fully Vested Stock Awards Grant Date Fair Value				$ 6,500			$ 60,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			270,707	229,865	107,417
Two Thousand Four Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | President and Chief Executive Officer [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	15.00%
Two Thousand Four Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | President and Chief Executive Officer [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	15.00%
Two Thousand Four Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | President and Chief Executive Officer [Member] | Share-based Compensation Award, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Two Thousand Four Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | President and Chief Executive Officer [Member] | Share-based Compensation Award, Tranche Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	45.00%
2004 Employee Stock Purchase Plan [Member]
ESPP Offering and Purchase Period			180 days
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized			600,000
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent			85.00%
Stock Issued During Period, Shares, Employee Stock Ownership Plan			78,479	79,922	55,872
Common Stock, Capital Shares Reserved for Future Issuance		691,584	691,584
Modified Stock Buyback Program [Member]
Increase in Authorized Amount Under Stock Repurchase Plan						$ 10,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount									$ 25,000,000	$ 5,000,000	$ 10,000,000	$ 40,000,000	$ 10,000,000
Stock Repurchased During Period, Shares			1,022,602	455,311	2,818,038
Treasury Stock, Value, Acquired, Cost Method			$ 35,200,000	$ 4,900,000	$ 40,000,000

Note 6 - Stockholders' Equity51

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense - Activity Under the 2004 Equity Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Balances, shares available for grant (in shares)		721,657		1,263,425	129,760
Balances, stock options outstanding (in shares)		1,116,472		2,148,797	3,462,567
Balances, weighted-average exercise price (in dollars per share)		$ 9.56		$ 9.31	$ 9.39
Balances, options outstanding weighted-average remaining contractual life (Year)		3 years 361 days		3 years 255 days	3 years 146 days		3 years 146 days
Balances, aggregate intrinsic value	[1]	$ 24.4		$ 8.7	$ 7.9		$ 5.7
Additional shares reserved, shares available for grant (in shares)		1,600,000	[2]		1,300,000	[3]
Options granted, shares available for grant (in shares)		(278,250)		(162,000)	(129,000)
Options granted, stock options outstanding (in shares)		278,250		162,000	129,000
Options granted, weighted-average exercise price (in dollars per share)		$ 31		$ 11.55	$ 13.26
Options exercised, stock options outstanding (in shares)		(488,398)		(1,051,138)	(1,141,904)
Options exercised, weighted-average exercise price (in dollars per share)		$ 8.96		$ 8.89	$ 9.20
Options cancelled (expired or forfeited), shares available for grant (in shares)		66,405		143,187	300,866
Options cancelled (expired or forfeited), stock options outstanding (in shares)		(66,405)		(143,187)	(300,866)
Options cancelled (expired or forfeited), weighted-average exercise price (in dollars per share)		$ 16.54		$ 12.93	$ 12.37
Stock awards granted, shares available for grant (in shares)		(873,881)		(1,018,005)	(430,580)
Stock awards cancelled (expired or forfeited), shares available for grant (in shares)		258,935		495,050	92,379
Balances, shares available for grant (in shares)		1,494,866		721,657	1,263,425		129,760
Balances, stock options outstanding (in shares)		839,919		1,116,472	2,148,797		3,462,567
Balances, weighted-average exercise price (in dollars per share)		$ 16.46		$ 9.56	$ 9.31		$ 9.39
Exercisable, stock options outstanding (in shares)		467,794
Exercisable, weighted-average exercise price (in dollars per share)		$ 9.53
Exercisable, options outstanding weighted-average remaining contractual life (Year)		2 years 270 days
Exercisable, aggregate intrinsic value	[1]	$ 16.8
Vested and expected to vest, net of estimated forfeitures, as of December 31, 2017 (in shares)		789,779
Vested and expected to vest, net of estimated forfeitures, as of December 31, 2017 (in dollars per share)		$ 15.61
Vested and expected to vest, net of estimated forfeitures, as of December 31, 2017 (Year)		3 years 313 days
Vested and expected to vest, net of estimated forfeitures, as of December 31, 2017	[1]	$ 23.6
[1]	Based on the closing stock price of the Company's stock of $45.35 on December 31, 2017, $17.35 on December 30, 2016, $12.79 on December 31 2015 and $10.68 on December 31, 2014.
[2]	Approved by the board of directors and stockholders in 2017.
[3]	Approved by stockholders in 2015.

Note 6 - Stockholders' Equity52

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense - Options Outstanding and Exercisable Price Ranges (Details)	12 Months Ended
	Dec. 31, 2017$ / sharesshares
Range of exercise prices, lower limit (in dollars per share)	$ 6.88
Range of exercise prices, upper limit (in dollars per share)	$ 47.40
Options outstanding, number outstanding (in shares) | shares	839,919
Options outstanding, weighted-average remaining contractual life (Year)	4 years 40 days
Options exercisable, number outstanding (in shares) | shares	467,794
Options exercisable, weighted-average exercise price (in dollars per share)	$ 9.53
Exercise Price Range 1 [Member]
Range of exercise prices, lower limit (in dollars per share)	6.88
Range of exercise prices, upper limit (in dollars per share)	$ 7.15
Options outstanding, number outstanding (in shares) | shares	84,739
Options outstanding, weighted-average remaining contractual life (Year)	1 year 156 days
Options exercisable, number outstanding (in shares) | shares	84,739
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.92
Exercise Price Range 2 [Member]
Range of exercise prices, lower limit (in dollars per share)	7.44
Range of exercise prices, upper limit (in dollars per share)	$ 8.72
Options outstanding, number outstanding (in shares) | shares	15,978
Options outstanding, weighted-average remaining contractual life (Year)	317 days
Options exercisable, number outstanding (in shares) | shares	15,978
Options exercisable, weighted-average exercise price (in dollars per share)	$ 8.30
Exercise Price Range 3 [Member]
Range of exercise prices, lower limit (in dollars per share)	8.80
Range of exercise prices, upper limit (in dollars per share)	$ 8.80
Options outstanding, number outstanding (in shares) | shares	141,956
Options outstanding, weighted-average remaining contractual life (Year)	2 years 164 days
Options exercisable, number outstanding (in shares) | shares	141,956
Options exercisable, weighted-average exercise price (in dollars per share)	$ 8.80
Exercise Price Range 4 [Member]
Range of exercise prices, lower limit (in dollars per share)	9.28
Range of exercise prices, upper limit (in dollars per share)	$ 9.97
Options outstanding, number outstanding (in shares) | shares	95,535
Options outstanding, weighted-average remaining contractual life (Year)	3 years 87 days
Options exercisable, number outstanding (in shares) | shares	73,402
Options exercisable, weighted-average exercise price (in dollars per share)	$ 9.69
Exercise Price Range 5 [Member]
Range of exercise prices, lower limit (in dollars per share)	10.03
Range of exercise prices, upper limit (in dollars per share)	$ 10.86
Options outstanding, number outstanding (in shares) | shares	88,044
Options outstanding, weighted-average remaining contractual life (Year)	4 years 167 days
Options exercisable, number outstanding (in shares) | shares	51,517
Options exercisable, weighted-average exercise price (in dollars per share)	$ 10.38
Exercise Price Range 6 [Member]
Range of exercise prices, lower limit (in dollars per share)	10.90
Range of exercise prices, upper limit (in dollars per share)	$ 11.67
Options outstanding, number outstanding (in shares) | shares	91,021
Options outstanding, weighted-average remaining contractual life (Year)	4 years 80 days
Options exercisable, number outstanding (in shares) | shares	50,356
Options exercisable, weighted-average exercise price (in dollars per share)	$ 11.36
Exercise Price Range 7 [Member]
Range of exercise prices, lower limit (in dollars per share)	11.98
Range of exercise prices, upper limit (in dollars per share)	$ 17.90
Options outstanding, number outstanding (in shares) | shares	109,896
Options outstanding, weighted-average remaining contractual life (Year)	4 years 240 days
Options exercisable, number outstanding (in shares) | shares	49,033
Options exercisable, weighted-average exercise price (in dollars per share)	$ 13.36
Exercise Price Range 8 [Member]
Range of exercise prices, lower limit (in dollars per share)	18.55
Range of exercise prices, upper limit (in dollars per share)	$ 25.70
Options outstanding, number outstanding (in shares) | shares	88,500
Options outstanding, weighted-average remaining contractual life (Year)	5 years 317 days
Options exercisable, number outstanding (in shares) | shares	813
Options exercisable, weighted-average exercise price (in dollars per share)	$ 18.55
Exercise Price Range 9 [Member]
Range of exercise prices, lower limit (in dollars per share)	39.30
Range of exercise prices, upper limit (in dollars per share)	$ 39.30
Options outstanding, number outstanding (in shares) | shares	77,000
Options outstanding, weighted-average remaining contractual life (Year)	6 years 302 days
Options exercisable, number outstanding (in shares) | shares
Options exercisable, weighted-average exercise price (in dollars per share)
Exercise Price Range 10 [Member]
Range of exercise prices, lower limit (in dollars per share)	47.40
Range of exercise prices, upper limit (in dollars per share)	$ 47.40
Options outstanding, number outstanding (in shares) | shares	47,250
Options outstanding, weighted-average remaining contractual life (Year)	6 years 350 days
Options exercisable, number outstanding (in shares) | shares
Options exercisable, weighted-average exercise price (in dollars per share)

Note 6 - Stockholders' Equity53

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense - Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) [Member] - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Outstanding, number of shares (in shares)		445,317		371,630		434,321
Outstanding, weighted-average grant date fair value (in dollars per share)		$ 11.15		$ 12.39		$ 9.31
Outstanding, aggregate intrinsic value	[1]	$ 23,155		$ 7,726		$ 4,753		$ 4,639
Granted, number of shares (in shares)		412,208		480,191		203,104
Granted, weighted-average grant date fair value (in dollars per share)		$ 28.74		$ 10.80		$ 14.81
Vested, number of shares (in shares)	[2]	(224,799)		(172,990)		(222,220)
Vested, weighted-average grant date fair value (in dollars per share)	[2]	$ 10.91		$ 12.56		$ 11.79
Vested, aggregate fair value	[2],[4]	$ 5,168	[3]	$ 1,906	[5]	$ 3,285	[6]
Forfeited, number of shares (in shares)		(122,139)		(233,514)		(43,575)
Forfeited, weighted-average grant date fair value (in dollars per share)		$ 13.56		$ 11.36		$ 9.09
Outstanding, number of shares (in shares)		510,587		445,317		371,630
Outstanding, weighted-average grant date fair value (in dollars per share)		$ 24.88		$ 11.15		$ 12.39
[1]	Based on the closing stock price of the Company's stock of $45.35 on December 31, 2017, $17.35 on December 31, 2016, $12.79 on December 31, 2015 and $10.68 on December 30, 2014.
[2]	The number of restricted stock units vested includes shares that the Company withheld on behalf of the employees to satisfy the statutory tax withholding requirements.
[3]	On the grant date, the fair value for these vested awards was $2.5 million.
[4]	Represents the value of the Company's stock on the date that the restricted stock units and performance stock units vest.
[5]	On the grant date, the fair value for these vested awards was $2.2 million.
[6]	On the grant date, the fair value for these vested awards was $2.6 million.

Note 6 - Stockholders' Equity54

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allocated share-based compensation expense	$ 5,110	$ 3,713	$ 4,084
Employee Stock Option [Member]
Allocated share-based compensation expense	815	989	1,438
Restricted Stock Units (RSUs) [Member]
Allocated share-based compensation expense	1,813	1,508	1,297
Performance Shares [Member]
Allocated share-based compensation expense	2,093	967	1,167
ESPP [Member]
Allocated share-based compensation expense	$ 389	$ 249	$ 182

Note 6 - Stockholders' Equity55

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense - Stock-based Compensation Expense by Department (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allocated share-based compensation expense	$ 5,110	$ 3,713	$ 4,084
Cost of Sales [Member]
Allocated share-based compensation expense	660	341	447
Selling and Marketing Expense [Member] | Employee [Member]
Allocated share-based compensation expense	1,629	1,179	1,054
Selling and Marketing Expense [Member] | Non-employees [Member]
Allocated share-based compensation expense	13
Research and Development Expense [Member]
Allocated share-based compensation expense	936	596	662
General and Administrative Expense [Member]
Allocated share-based compensation expense	$ 1,872	$ 1,597	$ 1,921

Note 6 - Stockholders' Equity56

Note 6 - Stockholders' Equity, Stock Plans and Stock-based Compensation Expense - Valuation Assumptions and Fair Value of Stock Option and ESPP Grants (Details) - $ / shares		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Stock Option [Member]
Expected term (in years) (Year)	[1]	3 years 255 days	3 years 302 days	3 years 87 days
Risk-free interest rate	[2]	1.73%	1.09%	0.90%
Volatility	[3]	40.00%	40.00%	30.00%
Dividend yield	[4]
Weighted average estimated fair value at grant date (in dollars per share)		$ 9.98	$ 3.72	$ 4.78
Stock Purchase Plan [Member]
Expected term (in years) (Year)	[1]	182 days	182 days	182 days
Risk-free interest rate	[2]	1.14%	0.46%	0.17%
Volatility	[3]	42.00%	39.00%	36.00%
Dividend yield	[4]
Weighted average estimated fair value at grant date (in dollars per share)		$ 8.21	$ 3.22	$ 3.51
[1]	The expected term represents the period during which the Company's stock-based awards are expected to be outstanding. The estimated term is based on historical experience of similar awards, giving consideration to the contractual terms of the awards, vesting requirements, and expectation of future employee behavior, including post-vesting terminations. The expected term of groups of employees that have similar historical exercise patterns has been considered separately for valuation purposes.
[2]	The risk-free interest rate is based on U.S. Treasury debt securities with maturities close to the expected term of the option as of the date of grant.
[3]	Estimated volatility is based on historical volatility. The Company also considers implied volatility when there is sufficient volume of freely traded options with comparable terms and exercise prices in the open market.
[4]	The Company has not historically issued any dividends and does not expect to do so in the foreseeable future.

Note 7 - Lease Termination In57

Note 7 - Lease Termination Income (Details Textual) $ in Millions	Jul. 06, 2017USD ($)
Proceeds from Termination of Lease	$ 4

Note 8 - Income Taxes (Details

Note 8 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued		$ 97,298
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		34.00%	34.00%	34.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		$ 7,300,000
Undistributed Earnings of Foreign Subsidiaries		0
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Federal and US State Except California [Member]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		(26,300,000)
Domestic Tax Authority [Member]
Operating Loss Carryforwards		34,700,000
Tax Credit Carryforward, Amount		6,109,000
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount		$ 6,100,000
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards Expiration Year 1		2,029
Tax Credit Carryforward Expiration Year		2,024
Domestic Tax Authority [Member] | Earliest Tax Year [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward Expiration Year		2,024
Domestic Tax Authority [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards Expiration Year 1		2,035
Tax Credit Carryforward Expiration Year		2,036
Domestic Tax Authority [Member] | Realizable Deferred Tax Assets due to Achievement of Three Years Cumulative Income [Member]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		$ (26,300,000)
State and Local Jurisdiction [Member]
Operating Loss Carryforwards		20,773,000
Tax Credit Carryforward, Amount		6,872,000
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member] | California Franchise Tax Board [Member]
Tax Credit Carryforward, Amount		6,600,000
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member] | Massachusetts Department of Revenue [Member]
Tax Credit Carryforward, Amount		$ 300,000
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards Expiration Year 1		2,029
State and Local Jurisdiction [Member] | Earliest Tax Year [Member] | Research Tax Credit Carryforward [Member] | Massachusetts Department of Revenue [Member]
Tax Credit Carryforward Expiration Year		2,021
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards Expiration Year 1		2,035

Note 8 - Income Taxes - Income

Note 8 - Income Taxes - Income (Loss) Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S.									$ 11,203	$ 2,207	$ (4,588)
International									757	513	360
Income (loss) before income taxes	$ 4,681	$ 6,413	$ 2,006	$ (1,140)	$ 4,241	$ 1,705	$ (1,199)	$ (2,027)	$ 11,960	$ 2,720	$ (4,228)

Note 8 - Income Taxes - Incom60

Note 8 - Income Taxes - Income Tax Provision (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal									$ 148		$ (7)
State									71	16	23
International									511	131	218
Total Current									730	147	234
Deferred:
Federal									(17,393)	(24)	33
State									(1,348)	(2)
International									(22)	22	(55)
Total deferred tax benefit									(18,763)	(4)	(22)
Total tax expense (benefit)	$ (18,199)	$ 225	$ 59	$ (118)	$ 28	$ 61	$ 30	$ 24	$ (18,033)	$ 143	$ 212

Note 8 - Income Taxes - Deferre

Note 8 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Net operating loss carryforwards	$ 8,604	$ 15,487
Stock-based compensation	1,179	1,486
Other accruals and reserves	1,663	2,160
Credits	11,781	9,006
Foreign	399	377
Accrued warranty	847	890
Depreciation and amortization	1,592	2,627
Other	303	95
Deferred tax asset before valuation allowance	26,368	32,128
Valuation allowance	(7,242)	(31,751)
Deferred tax asset after valuation allowance	19,126	377
Deferred tax liability on goodwill	(71)	(85)
Net deferred tax asset	$ 19,055	$ 292

Note 8 - Income Taxes - Summary

Note 8 - Income Taxes - Summary of Net Operating Losses and Tax Credit Carryforwards (Details)	12 Months Ended
	Dec. 31, 2017USD ($)
Domestic Tax Authority [Member]
Net operating losses, federal	$ 34,700,000
Tax credits, federal	$ 6,109,000
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Net operating losses, federal, expiration years	2,029
Tax credits, federal, expiration years	2,024
Domestic Tax Authority [Member] | Latest Tax Year [Member]
Net operating losses, federal, expiration years	2,035
Tax credits, federal, expiration years	2,036
State and Local Jurisdiction [Member]
Net operating losses, federal	$ 20,773,000
Tax credits, federal	$ 6,872,000
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Net operating losses, federal, expiration years	2,029
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Net operating losses, federal, expiration years	2,035

Note 8 - Income Taxes - Reconci

Note 8 - Income Taxes - Reconciliation of Effective Tax Rate (Details)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statutory rate		34.00%	34.00%	34.00%
State tax		(5.59%)	(14.56%)	1.94%
General Business Credits		(2.72%)	(9.25%)
General Business Credits				(15.92%)
Stock-based compensation		(21.55%)	14.36%	(19.19%)
Foreign Rate Differential		(0.50%)	(0.16%)	(1.47%)
Change in Federal Tax Rate		60.98%
Other*	[1]	0.65%	(2.15%)	(1.35%)
Meals and Entertainment*	[1]	2.15%	7.56%	(3.23%)
Valuation allowance		(218.17%)	(24.57%)	(31.63%)
Effective tax rate		(150.75%)	5.23%	(5.01%)
[1]	Other balance in 2016 and 2015 was reclassified for consistency with current year.

Note 8 - Income Taxes - Unrecog

Note 8 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Beginning of the year unrecognized tax benefits	$ 707	$ 651
Increases related to prior year tax positions	643
Increases related to current year tax positions	169	56
End of the year unrecognized tax benefits	$ 1,519	$ 707

Note 9 - Net Income (Loss) Pe65

Note 9 - Net Income (Loss) Per Share - Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income (loss)	$ 22,880	$ 6,188	$ 1,947	$ (1,022)	$ 4,213	$ 1,644	$ (1,229)	$ (2,051)	$ 29,993	$ 2,577	$ (4,440)
Basic (in shares)	13,744	13,973	13,935	13,840	13,591	13,163	13,131	13,010	13,873	13,225	13,960
Add: dilutive effect of potential common shares (in shares)									855	528
Weighted-average shares used in computing diluted net income per share (in shares)	14,569	14,767	14,629	13,840	14,201	13,544	13,131	13,010	14,728	13,753	13,960
Net income (loss) per share—basic (in dollars per share)	$ 1.66	$ 0.44	$ 0.14	$ (0.07)	$ 0.31	$ 0.12	$ (0.09)	$ (0.16)	$ 2.16	$ 0.19	$ (0.32)
Net income (loss) per share—diluted (in dollars per share)	$ 1.57	$ 0.42	$ 0.13	$ (0.07)	$ 0.30	$ 0.12	$ (0.09)	$ (0.16)	$ 2.04	$ 0.19	$ (0.32)

Note 9 - Net Income (Loss) Pe66

Note 9 - Net Income (Loss) Per Share - Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Antidilutive Securities (in shares)	51	244	2,988
Employee Stock Option [Member]
Antidilutive Securities (in shares)	42	220	2,575
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities (in shares)	9	24	296
ESPP [Member]
Antidilutive Securities (in shares)			93
Performance Shares [Member]
Antidilutive Securities (in shares)			24

Note 10 - Defined Contributio67

Note 10 - Defined Contribution Plan (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 288,000	$ 262,000	$ 244,000
Maximum [Member]
Defined Contribution Plan Maximum Percentage of Employee Voluntary Contribution	100.00%

Note 11 - Segment Information68

Note 11 - Segment Information and Revenue by Geograpy and Products (Details Textual)	12 Months Ended
	Dec. 31, 2017
Number of Operating Segments	1

Note 11 - Segment Information69

Note 11 - Segment Information and Revenue by Geograpy and Products - Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net revenue	$ 47,632	$ 38,173	$ 36,389	$ 29,299	$ 37,875	$ 30,281	$ 27,477	$ 22,423	$ 151,493	$ 118,056	$ 94,761
Revenue mix	$ 47,632	$ 38,173	$ 36,389	$ 29,299	$ 37,875	$ 30,281	$ 27,477	$ 22,423	151,493	118,056	94,761
Product [Member]
Net revenue									125,883	92,721	71,223
Revenue mix									125,883	92,721	71,223
Hand Piece Refills [Member]
Net revenue									2,435	2,498	2,910
Revenue mix									2,435	2,498	2,910
Skincare [Member]
Net revenue									4,342	3,809	2,889
Revenue mix									4,342	3,809	2,889
Total Product Revenue [Member]
Net revenue									132,660	99,028	77,022
Revenue mix									132,660	99,028	77,022
Service [Member]
Net revenue									18,833	19,028	17,739
Revenue mix									18,833	19,028	17,739
UNITED STATES
Net revenue									94,581	65,513	48,916
Revenue mix									94,581	65,513	48,916
JAPAN
Net revenue									17,264	14,727	11,504
Revenue mix									17,264	14,727	11,504
Asia, Excluding Japan [Member]
Net revenue									13,719	13,445	15,596
Revenue mix									13,719	13,445	15,596
Europe [Member]
Net revenue									8,317	7,539	7,728
Revenue mix									8,317	7,539	7,728
Rest of World [Member]
Net revenue									17,612	16,832	11,017
Revenue mix									$ 17,612	$ 16,832	$ 11,017

Note 12 - Commitments and Con70

Note 12 - Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Estimated Litigation Liability	$ 91,000	$ 138,000
Operating Leases, Rent Expense	$ 1,500,000	$ 1,600,000	$ 1,500,000

Note 12 - Commitments and Con71

Note 12 - Commitments and Contingencies - Minimum Lease and Other Leased Assets Under Long-term Non-cancellable Operating Leases (Details) $ in Thousands	Dec. 31, 2017USD ($)
2,018	$ 2,891
2,019	2,871
2,020	2,815
2,021	2,515
2,022	2,495
2023 and thereafter	214
Future minimum lease payments	$ 13,801

Note 12 - Commitments and Con72

Note 12 - Commitments and Contingencies - Minimum Lease Payments for Leased Vehicles Under Long-term Non-cancellable Capital Leases (Details) $ in Thousands	Dec. 31, 2017USD ($)
2,018	$ 472
2,019	381
2,020	104
Future minimum lease payments	$ 957

Note 13 - Related Parties (Deta

Note 13 - Related Parties (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	412,208	480,191	203,104
Director [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		6,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value		$ 87,100
Director [Member] | Restricted Stock Units (RSUs) [Member] | Vesting Commencing on August 15, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		33.33%
Director [Member] | Product Development, Clinical Sales and Marketing Support Services [Member]
Related Party Transaction, Amounts of Transaction	$ 196,000	$ 182,100
T3 Advisors [Member] | Real Estate Brokerage Services [Member]
Related Party Transaction, Amounts of Transaction	$ 38,000

Supplementary Financial Data 74

Supplementary Financial Data (Unaudited) - Supplementary Financial Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net revenue	$ 47,632	$ 38,173	$ 36,389	$ 29,299	$ 37,875	$ 30,281	$ 27,477	$ 22,423	$ 151,493	$ 118,056	$ 94,761
Cost of revenue	20,299	15,963	15,343	13,778	15,962	12,538	11,472	9,949	65,383	49,921	40,478
Gross profit	27,333	22,210	21,046	15,521	21,913	17,743	16,005	12,474	86,110	68,135	54,283
Sales and marketing	15,362	13,148	12,787	10,773	11,561	10,574	10,712	8,716	52,070	41,563	35,942
Research and development	3,481	3,467	2,981	2,945	2,897	2,914	2,712	2,709	12,874	11,232	10,733
General and administrative	3,947	3,379	3,548	3,216	3,010	2,716	3,997	3,220	14,090	12,943	12,129
Lease termination income		(4,000)							(4,000)
Total operating expenses	22,790	15,994	19,316	16,934	17,468	16,204	17,421	14,645	75,034	65,738	58,804
Income (loss) from operations	4,543	6,216	1,730	(1,413)	4,445	1,539	(1,416)	(2,171)	11,076	2,397	(4,521)
Interest and other income, net	138	197	276	273	(204)	166	217	144	884	323	293
Income (loss) before income taxes	4,681	6,413	2,006	(1,140)	4,241	1,705	(1,199)	(2,027)	11,960	2,720	(4,228)
Income tax provision (benefit)	(18,199)	225	59	(118)	28	61	30	24	(18,033)	143	212
Net income (loss)	$ 22,880	$ 6,188	$ 1,947	$ (1,022)	$ 4,213	$ 1,644	$ (1,229)	$ (2,051)	$ 29,993	$ 2,577	$ (4,440)
Net income (loss) per share—basic (in dollars per share)	$ 1.66	$ 0.44	$ 0.14	$ (0.07)	$ 0.31	$ 0.12	$ (0.09)	$ (0.16)	$ 2.16	$ 0.19	$ (0.32)
Net income (loss) per share—diluted (in dollars per share)	$ 1.57	$ 0.42	$ 0.13	$ (0.07)	$ 0.30	$ 0.12	$ (0.09)	$ (0.16)	$ 2.04	$ 0.19	$ (0.32)
Basic (in shares)	13,744	13,973	13,935	13,840	13,591	13,163	13,131	13,010	13,873	13,225	13,960
Diluted (in shares)	14,569	14,767	14,629	13,840	14,201	13,544	13,131	13,010	14,728	13,753	13,960

Schedule II - Valuation and Q75

Schedule II - Valuation and Qualifying Accounts - Summary of the Deferred Tax Assets Valuation Allowance and Allowance for Doubtful Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Valuation Allowance of Deferred Tax Assets [Member]
Balance at beginning of year	$ 31,751	$ 27,616	$ 26,046
Additions	617	6,755	3,327
Deductions	25,126	2,620	1,757
Balance at end of year	7,242	31,751	27,616
Allowance for Doubtful Accounts, Current [Member]
Balance at beginning of year	21	4
Additions	14	21	4
Deductions	26	4
Balance at end of year	$ 9	$ 21	$ 4