Document and Entity Information [Abstract] Document and Entity Information [Abstract] Statement [Table] Legal Entity [Axis] Entity [Domain] Parent Company [Member] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Statement of Financial Position [Abstract] Assets Abstract ASSETS Cash and cash equivalents CASH AND CASH EQUIVALENTS, end of period CASH AND CASH EQUIVALENTS, beginning of period Cash and Cash Equivalents, at Carrying Value, Total Short-term investments Short-term Investments, Total Accounts receivable, net Calc Accounts receivable, net Accounts Receivable, Net, Current, Total Inventories Presentation Inventories Inventory, Net, Total Prepaid Expenses And Other Prepaid Expenses And Other Prepaid expenses and other Total current assets Total current assets PLANT AND EQUIPMENT - NET Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Total OTHER ASSETS Long-term investments Long-term Investments, Total Patents and other assets, net Intangible Assets, Net (Excluding Goodwill), Total Other Assets, Noncurrent Total other assets Assets Total assets LIABILITIES AND SHAREHOLDERS' INVESTMENT Accounts payable Calc Accounts payable Accounts Payable, Current, Total Accrued liabilities Accrued liabilities Total current liabilities Total current liabilities DEFERRED INCOME TAXES SHAREHOLDERS' INVESTMENT Common stock Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Additional paid-in capital Additional Paid in Capital, Common Stock, Ending Balance Additional Paid in Capital, Common Stock, Beginning Balance Retained earnings Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Total Other shareholders' investment Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Total shareholders' investment Liabilities and Stockholders' Equity Total liabilities and shareholders' investment Statement, Scenario [Axis] Scenario, Unspecified [Domain] Income Statement [Abstract] NET SALES Sales Revenue, Goods, Net, Total Cost of Goods Sold COST OF GOODS SOLD COST OF GOODS SOLD Gross profit Gross profit OPERATING EXPENSES: Engineering, research and development Engineering, research and development Selling, general & administrative Selling, general & administrative Operating Expenses Total operating expenses Operating Income (Loss) Income from operations Income from operations OTHER INCOME (EXPENSE) Investment income Investment income Impairment loss on available-for-sale securities Impairment loss on available-for-sale securities Other Nonoperating Income (Expense) Other, net Other, net Nonoperating Income (Expense) Total other income (expense) Income before provision for income taxes Income before provision for income taxes Income Tax Expense (Benefit) PROVISION FOR INCOME TAXES PROVISION FOR INCOME TAXES Net income (loss) NET INCOME EARNINGS PER SHARE: Basic Basic Diluted Diluted Cash Dividends Declared per Share Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Adjustments to reconcile net income (loss) to net cash provided by operating activities: Depreciation and amortization Depreciation, Depletion and Amortization, Total (Gain) loss on disposal of assets (Gain) loss on disposal of assets Gain (Loss) on Sale of Property Plant Equipment, Total (Gain) loss on sale of investments (Gain) loss on sale of investments Gain (Loss) on Sale of Investments, Total Deferred Income Tax Expense Benefit Deferred income taxes Deferred Income Tax Expense (Benefit), Total Stock-based compensation expense related to employee stock options, employee stock purchases and restricted stock Share-based Compensation, Total Tax Benefit From Stock Options Exercised Excess tax benefits from stock-based compensation Excess tax benefits from stock-based compensation Change in operating assets and liabilities: Accounts receivable, net Inventories Increase (Decrease) in Inventories, Total Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other Increase (Decrease) in Prepaid, Deferred Expense and Other Assets, Total Accounts payable Accounts payable Accounts payable Increase (Decrease) in Accounts Payable, Total Accrued liabilities, excluding dividends declared Accrued liabilities, excluding dividends declared Accrued liabilities, excluding dividends declared Net Cash Provided by (Used in) Operating Activities Net cash provided by (used for) operating activities CASH FLOWS FROM INVESTING ACTIVITIES: Plant and equipment additions Proceeds from sale of plant and equipment Proceeds from sale of plant and equipment (Increase) decrease in investments (Increase) decrease in investments Increase (Decrease) in Trading Securities, Total (Increase) decrease in other assets (Increase) decrease in other assets (Increase) decrease in other assets Net Cash Provided by (Used in) Investing Activities Net cash provided by (used for) investing activities CASH FLOWS FROM FINANCING ACTIVITIES: Issuance of common stock from stock plan transactions Cash dividends paid Cash dividends paid Repurchases of common stock Excess Tax Benefit From Share Based Compensation Financing Activities Excess tax benefits from stock-based compensation Excess tax benefits from stock-based compensation Net Cash Provided by (Used in) Financing Activities Net cash provided by (used for) financing activities NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Basis of Presentation Basis of Presentation (Abstract) Basis of Presentation Management Opinion Management Opinion (Abstract) Management Opinion Management Opinion Adoption of New Accounting Standards Adoption of New Accounting Standards (Abstract) Adoption of New Accounting Standards Subsequent Events [Abstract] Subsequent Events [Abstract] Subsequent Events Fair Value Measurement Fair Value Measurement (Abstract) Investments Inventories Inventories (Abstract) Inventories Note Inventories Earnings Per Share EPS (Abstract) Earnings Per Share Stock-Based Compensation Plans Stock-Based Compensation Plans (Abstract) Stock-Based Compensation Plans Comprehensive Income Comprehensive Income (Abstract) Comprehensive Income Stock Dividends Stock Dividends (Abstract) Stock Dividends Segments Segments (Abstract) Segments Scenario, Actual [Member]