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Income Taxes (Summary Of Detail Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Deferred tax assets (liabilities): |  |
Net operating loss carryforward | $ 64,776 | $ 84,056
Research and development and AMT credit carryforwards, net | 5,339 | 5,446
Equity compensation | 6,955 | 8,406
Accruals and reserves | 874 | 914
Inventories | 588 | 1,503
Intangible assets | (11,297) | (16,922)
Property and equipment, net | (339) | (1,487)
Other, net | 179 | 66
Subtotal | 67,075 | 81,982
Less valuation allowance | (66,973) | (81,982)
Total | $ 102 |

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