| Income from continuing operations | |
| Depreciation and amortization | 6.94M |
| Investment premium amortization, net | 1.81M |
| Loss on extinguishment of senior subordinated convertible notes | |
| Non-cash interest income and other | |
| Non-cash interest expense | |
| Write-down on investment | |
| Tax benefit related to stock options | |
| Share-based compensation expense | 18.85M |
| Excess tax benefits from share-based compensation | -1.94M |
| Loss on disposal of assets | 96K |
| Change in deferred taxes, net | -428K |
| Receivables | -8.86M |
| Inventories | -9.96M |
| Prepaid expenses and other assets | |
| Accrued compensation and other accrued liabilities | |
| Accounts payable | 8.77M |
| Income taxes, net | |
| Net cash provided by continuing operating activities | |
| Purchases of available-for-sale investments | -90.94M |
| Sales and maturities of available-for-sale investments | 116.89M |
| Purchases of property, plant and equipment, net | -2.82M |
| Purchases of patents | |
| Net cash provided by (used in) continuing investing activities | |
| Excess tax benefits from share-based compensation | 1.94M |
| Proceeds from stock option exercises | 23.46M |
| Proceeds from stock issued under the employee stock purchase plan | |
| Repurchase and retirement of common shares | -32.27M |
| Extinguishment of senior subordinated convertible notes | |
| Net cash (used in) provided by continuing financing activities | |
| Effect of exchange rate changes on cash and cash equivalents | 5.32M |
| Net cash provided by continuing operations | |
| Net cash provided by operating activities | |
| Net cash used in investing activities | |
| Net increase in cash and cash equivalents | 72.11M |
| Net cash and cash equivalents at beginning of period | 72.81M |
| Net cash and cash equivalents at end of period | 144.93M |
| Cash paid for taxes | 13.24M |
| Cash paid for interest | |
| Transfers of equipment from inventory | 605K |
| Purchases of property, plant and equipment through accounts payable and accrued liabilities | 221K |
| Issuance of shares for extinguishment of senior subordinated convertible notes | |