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Stock-Based Compensation (Tables) | 9 Months Ended
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Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Stock-Based Compensation Expense | The Company accounts for its stock-based compensation at fair value. The following table summarizes stock-based compensation expense by financial statement line item for the three and nine months ended December 31, 2015 and 2014 (in thousands):
| Three months ended December 31, |  |  | Nine months ended December 31, |
| 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Cost of revenues | $ | 55 |  |  | $ | 186 |  |  | $ | 213 |  |  | $ | 533 |
Research and development |  | 89 |  |  |  | 419 |  |  |  | 373 |  |  |  | 1,418 |
Selling, general and administrative |  | 564 |  |  |  | 916 |  |  |  | 1,956 |  |  |  | 2,669 |
Total | $ | 708 |  |  | $ | 1,521 |  |  | $ | 2,542 |  |  | $ | 4,620 |
Schedule of Weighted Average Assumptions used in Black-Scholes Valuation Model for Stock Options Granted | The weighted average assumptions used in the Black-Scholes valuation model for stock options granted during the three and nine months ended December 31, 2015 and 2014 are as follows:
| Three months ended December 31, |  | Nine months ended December 31, |
| 2015 |  | 2014 |  | 2015 |  | 2014 |
Expected volatility | N/A |  | N/A |  | N/A |  |  | 85.5 | %
Risk-free interest rate | N/A |  | N/A |  | N/A |  |  | 1.9 | %
Expected life (years) | N/A |  | N/A |  | N/A |  |  | 5.8 |
Dividend yield | None |  | None |  | None |  | None |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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