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Stock-Based Compensation (Tables) | 6 Months Ended
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Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based 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 six months ended September 30, 2016 and 2015 (in thousands):
| Three months ended September 30, |  | Six months ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Cost of revenues | $ | 49 |  |  | $ | 61 |  |  | $ | 99 |  |  | $ | 158 |
Research and development | 62 |  |  | 87 |  |  | 92 |  |  | 283 |
Selling, general and administrative | 542 |  |  | 558 |  |  | 1,462 |  |  | 1,393 |
Total | $ | 653 |  |  | $ | 706 |  |  | $ | 1,653 |  |  | $ | 1,834 |
Schedule of Share-Based Compensation Valuation Assumptions | The weighted average assumptions used in the Black Scholes valuation model for stock options granted during the six months ended September 30, 2016 are as follows:
| Three months ended September 30, |  | Six months ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Expected volatility | 67.6 | % |  | N/A |  | 67.6 | % |  | N/A
Risk-free interest rate | 1.3 | % |  | N/A |  | 1.3 | % |  | N/A
Expected life (years) | 5.7 |  |  | N/A |  | 5.7 |  |  | N/A
Dividend yield | None |  |  | N/A |  | None |  |  | N/A

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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 + 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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