Accounts payable Accounts receivable, net of allowance for doubtful accounts of $320 in 2008 and $655 in 2007 Accrued liabilities Accumulated other comprehensive income, net of tax Payments to Acquire Businesses and Interest in Affiliates Additional paid-in capital Adjustments to reconcile net income to net cash provided by operating activities: Allowance for doubtful accounts Cash, cash equivalents and investment securities Cash and cash equivalents CASH AND CASH EQUIVALENTS, end of year CASH AND CASH EQUIVALENTS, beginning of year Accounts receivable Inventories Prepaid expenses and other assets Cash provided (used) by changes in operating assets and liabilities, net of assets purchased Accounts payable Accrued liabilities BALANCE, shares - end of year BALANCE, shares - beginning of year Common stock, $0.10 par value - Authorized - 80,000,000 shares, Issued 14,783,668 shares in 2008 and 14,746,951 shares in 2007, outstanding 14,730,725 shares in 2008 and 13,689,450 shares in 2007 Comprehensive income COST OF GOODS SOLD Total current liabilities Depreciation and amortization NET INCOME PER COMMON SHARE - Diluted Effect of exchange rate changes on cash Stock compensation expense Gain on sale of building Loss (gain) on disposal or sale of property and equipment or property held for sale Gross profit Change in restricted cash INTANGIBLE ASSETS, net Inventories INVESTMENT SECURITIES - non-current portion Investment securities MINORITY INTEREST Minority interest CASH FLOWS FROM FINANCING ACTIVITIES: Net cash provided by (used in) financing activities CASH FLOWS FROM INVESTING ACTIVITIES: Net cash provided by (used in) investing activities CASH FLOWS FROM OPERATING ACTIVITIES: Net cash provided by operating activities NET INCOME Net income NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Proceeds from employee stock purchase plan Nonoperating Income (Expense) [Abstract] OTHER INCOME Income from operations TOTAL REVENUE Other comprehensive loss, net of tax: Unrealized loss on investments Prepaid income taxes Proceeds from sale of investment securities Proceeds from sale of assets Proceeds from exercise of stock options PROPERTY HELD FOR SALE PROPERTY AND EQUIPMENT, net Provision for doubtful accounts Purchases of investment securities Purchases of property and equipment Purchase of treasury stock Restricted cash RESTRICTED CASH Retained earnings Net sales Selling, general and administrative SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION Total current assets WEIGHTED AVERAGE NUMBER OF SHARES - Diluted WEIGHTED AVERAGE NUMBER OF SHARES - Basic Research and development DEFERRED INCOME TAXES - non-current portion Deferred income taxes - current portion DEFERRED INCOME TAXES - non-current portion Treasury stock, at cost - 52,943 shares in 2008 and 1,057,501 shares in 2007 NET INCOME PER COMMON SHARE - Basic Excess tax benefits from exercise of stock options OTHER ASSETS Total operating expenses Income before income taxes and minority interest Other comprehensive income, net of tax benefit: Foreign currency translation adjustment net of tax effect Tax effect of foreign currency translation adjustment Total stockholders' equity BALANCE, beginning of year BALANCE, end of year PROVISION FOR INCOME TAXES Convertible preferred stock, $1.00 par value - Authorized - 500,000 shares, issued and outstanding - none Comprehensive income Minority interest share transfer Stock compensation Proceeds from employee stock purchase plan Exercise of stock options and related excess income tax benefits Proceeds from employee stock purchase plans Exercise of stock options and related excess income tax benefits Purchase of treasury stock Purchase of treasury stock COMMITMENTS AND CONTINGENCIES Proceeds from finance loan repayments Income tax benefits from exercise of stock options INCOME TAXES RECEIVABLE - non-current portion Carrying amount as of the balance sheet date of amounts due in more than one year from income tax authorities. Prepaid expenses and other current assets Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer, and the aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet due to materiality considerations. INCOME TAXES PAYABLE - non-current portion The noncurrent portion as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations. Prepaid and deferred income taxes The net change during the reporting period in the carrying amount as of the balance sheet date of payments made in advance for income and other taxes, which will be charged against earnings within one year or the normal operating cycle, if longer, as well as the current portion of the aggregate tax effects as of the balance sheet date of all future tax deductions arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws; after deducting the allocated valuation allowance, if any, to reduce such amount to net realizable value. Other Revenue earned during the period from sources other than specified elsewhere in the taxonomy. Cash Paid for Acquired Assets Cash paid for acquired assets The cash paid for acquired assets, including intangible assets and property and equipment. Document and Entity Information [Abstract] Research and development tax credit originating from stock options and other tax benefits Indirect tax benefits under FAS 123R related to stock compensation which include R&D credits and Domestic Production Activities deductions.