| Cash flows from operating activities: | |
| Net income | |
| Adjustments to reconcile consolidated net income to net cash provided by operating activities: | |
| Income from discontinued operations, net of a tax | |
| Depreciation and amortization | 6.85M |
| Non-cash interest, net | 1.08M |
| Non-cash stock-based compensation | 9.94M |
| Deferred income taxes | -99K |
| Loss on convertible notes | |
| (Gain) loss on investments | 0 |
| Changes in operating assets and liabilities: | |
| Accounts receivable | 4.81M |
| Prepaid expenses and other, net | -193K |
| Accrued expenses and other long-term liabilities | -14.85M |
| Deferred revenue | 5.04M |
| Net cash provided by continuing operations | |
| Net cash used in discontinued operations | |
| Net cash provided by operating activities | 11.05M |
| Cash flows from investing activities: | |
| Proceeds from sales of available-for-sale securities | |
| Proceeds received from ARS option | 0 |
| Purchases of property and equipment | -2.88M |
| Finalization of sale price of discontinued operations | |
| Net cash provided by investing activities | -2.88M |
| Cash flows from financing activities: | |
| Proceeds from exercise of stock options | 672K |
| Cash used for withholding taxes due on stock-based awards | -174K |
| Net proceeds from issuance of 2.50% Notes and 2.25% Notes | |
| Repurchases of 1.75% Notes and 3 1/8% Notes | |
| Purchases of treasury stock | -1.28M |
| Excess tax benefit on stock-based awards | |
| Net cash provided by (used in) financing activities | -783K |
| Net increase in cash and cash equivalents | 7.39M |
| Cash and cash equivalents at beginning of period | 991.84M |
| Cash and cash equivalents at end of period | 999.22M |