| Balance Sheet Related Disclosures [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Balance Sheet Related Disclosures [Abstract] | |
Schedule Of Available-For-Sale Short-Term | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of | | December 31, 2016 | | December 31, 2015 | | Cost | | Unrealized Gain | | Unrealized Loss | | Estimated Fair Value | | Cost | | Unrealized Gain | | Unrealized Loss | | Estimated Fair Value | | (In thousands) | U.S. treasuries | $ | 123,869 |
| | $ | 9 |
| | $ | (40 | ) | | $ | 123,838 |
| | $ | 95,057 |
| | $ | 1 |
| | $ | (65 | ) | | $ | 94,993 |
| Certificates of deposits | 148 |
| | — |
| | — |
| | 148 |
| | 147 |
| | — |
| | — |
| | 147 |
| Total | $ | 124,017 |
| | $ | 9 |
| | $ | (40 | ) | | $ | 123,986 |
| | $ | 95,204 |
| | $ | 1 |
| | $ | (65 | ) | | $ | 95,140 |
|
|
Schedule Of Accounts Receivable And Related Allowances | Accounts receivable, net | | | | | | | | | | As of | | December 31, 2016 | | December 31, 2015 | | (In thousands) | Gross accounts receivable | $ | 333,080 |
| | $ | 309,926 |
| Allowance for doubtful accounts | (1,255 | ) | | (1,255 | ) | Allowance for sales returns | (13,506 | ) | | (15,904 | ) | Allowance for price protection | (4,480 | ) | | (2,125 | ) | Total allowances | (19,241 | ) | | (19,284 | ) | Total accounts receivable, net | $ | 313,839 |
| | $ | 290,642 |
|
|
Schedule Of Inventories | Inventories | | | | | | | | | | As of | | December 31, 2016 | | December 31, 2015 | | (In thousands) | Raw materials | $ | 4,596 |
| | $ | 4,292 |
| Work-in-process | — |
| | 2 |
| Finished goods | 243,266 |
| | 208,824 |
| Total inventories | $ | 247,862 |
| | $ | 213,118 |
|
|
Schedule Of Property And Equipment, Net | Property and equipment, net | | | | | | | | | | As of | | December 31, 2016 | | December 31, 2015 | | (In thousands) | Computer equipment | $ | 10,557 |
| | $ | 11,161 |
| Furniture, fixtures and leasehold improvements | 20,827 |
| | 18,317 |
| Software | 28,663 |
| | 30,396 |
| Machinery and equipment | 63,446 |
| | 66,662 |
| Total property and equipment, gross | 123,493 |
| | 126,536 |
| Accumulated depreciation and amortization | (104,020 | ) | | (104,152 | ) | Total property and equipment, net | $ | 19,473 |
| | $ | 22,384 |
|
|
Schedule Of Purchased Intangibles, Net | Intangibles, net The following tables present details of the Company’s purchased intangibles: | | | | | | | | | | | | | | As of December 31, 2016 | | Gross | | Accumulated Amortization | | Net | | (In thousands) | Technology | $ | 66,599 |
| | $ | (57,381 | ) | | $ | 9,218 |
| Customer contracts and relationships | 56,500 |
| | (30,375 | ) | | 26,125 |
| Other | 11,045 |
| | (8,489 | ) | | 2,556 |
| Total intangibles, net | 134,144 |
| | (96,245 | ) | | 37,899 |
|
| | | | | | | | | | | | | | As of December 31, 2015 | | Gross | | Accumulated Amortization | | Net | | (In thousands) | Technology | $ | 61,099 |
| | $ | (48,485 | ) | | $ | 12,614 |
| Customer contracts and relationships | 56,500 |
| | (23,290 | ) | | 33,210 |
| Other | 10,545 |
| | (7,422 | ) | | 3,123 |
| Total intangibles, net | $ | 128,144 |
| | $ | (79,197 | ) | | $ | 48,947 |
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|
Schedule Of Estimated Amortization Expense Related To Intangibles | Estimated amortization expense related to finite-lived intangibles for each of the next five years and thereafter is as follows: | | | | | Year Ended December 31, | Amounts (In thousands) | 2017 | $ | 12,911 |
| 2018 | 9,396 |
| 2019 | 7,544 |
| 2020 | 6,622 |
| 2021 | 1,413 |
| Thereafter | 13 |
| Total estimated amortization expense | $ | 37,899 |
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|
Schedule Of Activity Related To Goodwill | Goodwill The changes in the carrying amount of goodwill during the years ended December 31, 2016 and 2015 are as follows: | | | | | | | | | | | | | | | | | | | | Retail | | Commercial | | Service Provider | | Total | | | (In thousands) | As of December 31, 2014 | | $ | 45,442 |
| | $ | 36,279 |
| | $ | — |
| | $ | 81,721 |
| Goodwill impairment charges | | — |
| | — |
| | — |
| | — |
| As of December 31, 2015 | | 45,442 |
| | 36,279 |
| | — |
| | 81,721 |
| Goodwill from acquisition of Placemeter | | 3,742 |
| | — |
| | — |
| | 3,742 |
| As of December 31, 2016 | | $ | 49,184 |
| | $ | 36,279 |
| | $ | — |
| | $ | 85,463 |
|
|
Schedule of Other Assets, Noncurrent | Other non-current assets | | | | | | | | | | As of | | December 31, 2016 | | December 31, 2015 | | (In thousands) | Non-current deferred income taxes | $ | 70,859 |
| | $ | 68,445 |
| Other | 7,977 |
| | 7,929 |
| Total other non-current assets | $ | 78,836 |
| | $ | 76,374 |
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|
Schedule Of Other Accrued Liabilities | Other accrued liabilities | | | | | | | | | | As of | | December 31, 2016 | | December 31, 2015 | | (In thousands) | Sales and marketing programs | $ | 74,330 |
| | $ | 69,693 |
| Warranty obligation | 58,520 |
| | 56,706 |
| Freight | 8,980 |
| | 5,748 |
| Other | 28,844 |
| | 34,135 |
| Total other accrued liabilities | $ | 170,674 |
| | $ | 166,282 |
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