| Certain Financial Statement Information [Abstract] | Period [Axis] |
|---|
2015-04-01 - 2016-03-31 |
|---|
Certain Financial Statement Information [Abstract] | |
Schedule of Accounts receivable | Accounts receivable, net: | | | | | | | | | | March 31, | | 2016 | | 2015 | | (In thousands) | Accounts receivable | $ | 9,527 |
| | $ | 12,709 |
| Less: allowance for bad debts | (262 | ) | | (302 | ) | | $ | 9,265 |
| | $ | 12,407 |
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Schedule of Inventories | Inventories | | | | | | | | | | March 31, | | 2016 | | 2015 | | (In thousands) | Finished goods | $ | 8,206 |
| | $ | 15,310 |
| Work in process | 5,854 |
| | 5,377 |
| Raw materials | 2,088 |
| | 2,827 |
| | $ | 16,148 |
| | $ | 23,514 |
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Schedule of Other current assets | Other current assets: | | | | | | | | | | March 31, | | 2016 | | 2015 | | (In thousands) | Prepaid expenses | $ | 8,887 |
| | $ | 14,847 |
| Executive deferred compensation assets | 817 |
| | 1,004 |
| Other | 1,071 |
| | 989 |
| | $ | 10,775 |
| | $ | 16,840 |
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Schedule of Property and equipment | Property and equipment: | | | | | | | | | | | | Useful Life | | March 31, | | 2016 | | 2015 | | (In years) | | (In thousands) | Machinery and equipment | 3-5 | | $ | 36,723 |
| | $ | 37,286 |
| Leasehold improvements | 1-5 | | 7,529 |
| | 9,909 |
| Computers, office furniture and equipment | 3-5 | | 34,016 |
| | 32,902 |
| | | | 78,268 |
| | 80,097 |
| Less: accumulated depreciation and amortization | | | (64,975 | ) | | (63,348 | ) | | | | $ | 13,293 |
| | $ | 16,749 |
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Schedule of Other accrued liabilities | Other accrued liabilities: | | | | | | | | | | March 31, | | 2016 | | 2015 | | (In thousands) | Employee related liabilities | $ | 1,362 |
| | $ | 1,454 |
| Executive deferred compensation | 848 |
| | 1,025 |
| Income taxes | 64 |
| | 1,311 |
| Accrued bonus | 3,269 |
| | 39 |
| Other | 4,250 |
| | 3,815 |
| | $ | 9,793 |
| | $ | 7,644 |
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Schedule of Accumulated other comprehensive loss | Accumulated other comprehensive loss: | | | | | | | | | | | | | | Foreign currency translation adjustments | | Unrealized loss on short-term investments | | Total | | (In thousands) | Balance as of March 31, 2014 | $ | (1,678 | ) | | $ | (4,465 | ) | | $ | (6,143 | ) | Other than comprehensive loss, net of tax | (389 | ) | | (954 | ) | | (1,343 | ) | Balance as of March 31, 2015 | (2,067 | ) | | (5,419 | ) | | (7,486 | ) | Other than comprehensive loss, net of tax | (419 | ) | | (1,648 | ) | | (2,067 | ) | Balance as of March 31, 2016 | $ | (2,486 | ) | | $ | (7,067 | ) | | $ | (9,553 | ) |
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Schedule of Realized gain on short-term investments and interest income, net | Realized gain on short-term investments and interest income, net: | | | | | | | | | | | | | | Fiscal Years Ended March 31, | | 2016 | | 2015 | | 2014 | | (In thousands) | Gross realized gain on short-term investments | $ | 1,763 |
| | $ | 1,418 |
| | $ | 3,474 |
| Gross realized loss on short-term investments | (204 | ) | | (65 | ) | | (114 | ) | Net realized gain on short-term investments | 1,559 |
| | 1,353 |
| | 3,360 |
| Interest income, net | 679 |
| | 1,411 |
| | 1,692 |
| | $ | 2,238 |
| | $ | 2,764 |
| | $ | 5,052 |
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Schedule of Outstanding potential common shares were excluded from the diluted earnings per share computation | The following potentially dilutive common shares are excluded from the computation of net loss per share (in thousands): | | | | | | | | | | | Fiscal Years Ended March 31, | | 2016 | | 2015 | | 2014 | | (In thousands) | Outstanding stock options | 1,571 |
| | 1,794 |
| | 2,409 |
| Outstanding RSUs | 4,704 |
| | 4,328 |
| | 6,105 |
| ESPP shares | 383 |
| | 249 |
| | 219 |
| | 6,658 |
| | 6,371 |
| | 8,733 |
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