Document and Entity Information Document Information [Table] Statement [Line Items] Schedule II-Valuation and Qualifying Accounts Document Type Document Annual Report Document Transition Report Document Period End Date Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Auditor Name Auditor Firm ID Auditor Location Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Central Index Key Amendment Flag Consolidated Statements of Operations Statement [Table] Products and Services [Axis] Products and Services [Domain] Product Service or group of services that are sold by the entity. Services Revenues [Abstract] Revenue: Revenues Total revenue Cost of Revenue [Abstract] Cost of revenue: Cost of Goods and Services Sold Total cost of revenue Gross Profit Gross profit Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development Selling and Marketing Expense Sales and marketing General and Administrative Expense General and administrative Operating Expenses Total operating expenses Operating Income (Loss) Income from operations Nonoperating Income (Expense) [Abstract] Other (expense) income: Investment Income, Interest Interest income Interest Expense Interest expense Other Nonoperating Income (Expense) Other, net Nonoperating Income (Expense) Total other expense Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income before income taxes Income Tax Expense (Benefit) Income tax provision Income tax provision Net Income (Loss) Available to Common Stockholders, Basic Net income Net income Net income available to common stockholders Computation of Net Earnings per Share Net income per share: Earnings Per Share, Basic Basic Earnings Per Share, Diluted Diluted Weighted Average Number of Shares Outstanding, Diluted [Abstract] Shares used in computing net income per share: Weighted Average Number of Shares Outstanding, Basic Basic weighted average common shares Weighted average common shares outstanding used in computing basic income per share Weighted Average Number of Shares Outstanding, Diluted Diluted weighted average common shares Weighted average common shares used in computing diluted net income per share Consolidated Statements of Comprehensive Income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Foreign currency translation adjustments Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent Amortization of actuarial net gain and other adjustments from pension plan, net of tax Change in pension obligation, net of tax Other Comprehensive Income (Loss), Net of Tax Total other comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income Consolidated Balance Sheets Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Short-term investments Short-term investments (money market funds, U.S. Government Securities and Agency Investments) Accounts Receivable, Net, Current Accounts receivable, net Trade receivable, net Inventory, Net Inventories, net Inventories, net Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property, plant and equipment, net Net Operating Lease, Right-of-Use Asset Operating lease assets Finance Lease, Right-of-Use Asset Finance lease assets, net Finance lease assets Restricted Cash and Cash Equivalents, Noncurrent Long-term restricted cash Deferred Tax Assets, Net. Deferred income taxes Other Assets, Noncurrent Other assets Assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Employee-related Liabilities, Current Accrued compensation Product Warranty Accrual, Current Warranty Amount classified as current Accrued Income Taxes, Current Income taxes Contract with Customer, Liability, Current Deferred revenue Short-term deferred revenue Finance Lease, Liability, Current Finance liabilities current Current portion of finance lease obligation Other Liabilities, Current Other current liabilities Liabilities, Current Total current liabilities Finance Lease, Liability, Noncurrent Finance liabilities noncurrent Long-term finance lease obligation Contract with Customer, Liability, Noncurrent Long-term deferred revenue Other Liabilities, Noncurrent Other long-term liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (Note 16) Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Common Stock, Value, Outstanding Common stock, $0.001 par value, 75,000 shares authorized; 32,775 shares issued and outstanding at December 31, 2022; 33,240 shares issued and outstanding at December 31, 2021 Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings (accumulated deficit) Accumulated Other Comprehensive Income (Loss), Net of Tax Balance at December 31, 2022 Balance at December 31, 2021 Accumulated other comprehensive (loss) income Stockholders' Equity Attributable to Parent Balance Balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Number of common stock authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Number of common stock outstanding Consolidated Statements of Stockholders' Equity Equity Components [Axis] Equity Component [Domain] Common Stock Additional Paid-in Capital Accumulated Deficit Accumulated Other Comprehensive Income (Loss) Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Shares, Outstanding Balance (in shares) Balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised (in shares) Exercise of stock options (in shares) Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of shares under Employee Stock Purchase Plan (in shares) Number of shares purchased under the plan Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of shares under Employee Stock Purchase Plan Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Issuance of common shares on restricted stock units, net of shares withheld (in shares) Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance of common shares on restricted stock units, net of shares withheld Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation expense Treasury shares returned to authorized, Shares Repurchase of common stock (in shares) Treasury shares returned to authorized, Value Repurchase of common stock Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, Depletion and Amortization Depreciation and amortization Gain (Loss) on Disposition of Property Plant Equipment Gain on sale of equipment Deferred Income Tax Expense (Benefit) Deferred income taxes Share-based Compensation Stock-based compensation expense Amount of provision related to write-down of excess and obsolete inventory. Provision for excess and obsolete inventory Provision for excess and obsolete inventory Foreign Currency Transaction Gain (Loss), before Tax Foreign currency remeasurement Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventories Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and other current liabilities Increase Decrease In Contract With Customer Liability Deferred revenue Increase (Decrease) in Income Taxes Payable Income taxes Increase (Decrease) in Other Operating Assets and Liabilities, Net Other assets and liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities Proceeds from Sale of Property, Plant, and Equipment Proceeds from sale of equipment Payments to Acquire Property, Plant, and Equipment Expenditures for property, plant and equipment and capitalized software Payments to Acquire Short-term Investments Purchase of short-term investments Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities The net cash inflow or outflow from cash and cash items that are not available for withdrawal or usage. Net Settlement On Restricted Stock Grants Net settlement on restricted stock grants Payments for Repurchase of Common Stock Repurchase of common stock Proceeds from Stock Plans Proceeds from Employee Stock Purchase Plan purchases Finance Lease, Principal Payments Principal payments on finance lease obligation Financing cash outflows from finance leases Proceeds from Stock Options Exercised Proceeds from exercise of stock options Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Effect of exchange rate changes on cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Cash, cash equivalents and restricted cash at beginning of period Total cash, cash equivalents and restricted cash Supplemental Cash Flow Elements [Abstract] Supplemental disclosure of cash flow information Income Taxes Paid, Net Income taxes Interest Paid Interest Nature of Business Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Nature of Business Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Revenue Revenue from Contract with Customer [Text Block] Revenue N/A Cash, cash equivalents and restricted cash The entire disclosure of cash, cash equivalents and restricted cash. Cash Cash Equivalents And Restricted Cash [Text Block] Cash, cash equivalents and restricted cash Accounts Receivable and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accounts Receivable and Allowance for Credit Losses Inventories, net Inventory Disclosure [Text Block] Inventories, net Property, Plant and Equipment, net. Property, Plant and Equipment Disclosure [Text Block] Property, Plant and Equipment, net Assets Manufactured for Internal Use, net The entire disclosure of assets manufactured for internal use. This includes details regarding cost, accumulated depreciation and uses of the assets. Assets Manufactured For Internal Use Disclosure [Text Block] Assets Manufactured for Internal Use, net Leases The entire disclosure of information about leases. Lease Disclosure [Text Block] Leases Product Warranty Product Warranty Disclosure [Text Block] Product Warranty Financing Arrangements Debt Disclosure [Text Block] Financing Arrangements Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Employee Benefit Plans