XML 31 R20.htm IDEA: XBRL DOCUMENT
v3.3.1.900

7. STOCK- BASED COMPENSATION (Tables) | 9 Months Ended
--- | ---
Dec. 31, 2015
Stock-Based Compensation |
Summary of stock option activities |
|  |  |  |  |  | Weighted |  |  |  |  |  |
|  |  |  | Number of Shares |  | Average |  | Weighted |  |  |
|  | Shares |  | Underlying |  | Remaining |  | Average |  |  |
|  | Available for |  | Options |  | Contractual |  | Exercise |  | Intrinsic
|  | Grant |  | Outstanding |  | Life (Years) |  | Price |  | Value
Balance at March 31, 2015 |  | 6,213,943 |  | 6,774,151 |  |  |  | $ | 5.16 |  |  |
Options reserved |  | 1,156,419 |  | — |  |  |  |  | — |  |  |
Granted |  | (661,103) |  | 661,103 |  |  |  |  | 4.90 |  |  |
Exercised |  | — |  | (76,745) |  |  |  |  | 4.19 |  | $ | 46,977
Forfeited/expired |  | 9,864 |  | (19,864) |  |  |  |  | 4.64 |  |  |
Balance at December 31, 2015 |  | 6,719,123 |  | 7,338,645 |  |  |  | $ | 5.15 |  |  |
Options vested and exercisable |  |  |  | 4,976,550 |  | 3.82 |  | $ | 5.05 |  | $ | 484,583
Options vested and expected to vest |  |  |  | 7,290,669 |  | 5.22 |  | $ | 5.14 |  | $ | 484,583
Schedule of options outstanding by exercise price |
|  |  |  |  | Number of |  | Options Outstanding |  | Options Exercisable
|  |  |  |  | Shares |  | Weighted |  | Weighted Average |  |  |  | Weighted
|  |  |  |  | Underlying |  | Average |  | Remaining |  | Number |  | Average
|  |  |  |  | Options |  | Exercise |  | Contractual |  | Vested and |  | Exercise
Exercise Price |  | Outstanding |  | Price |  | Life (Years) |  | Exercisable |  | Price
$ | 2.43 | - | 3.43 |  | 892,584 |  | $ | 3.18 |  | 3.10 |  | 892,584 |  | $ | 3.18
$ | 3.75 | - | 4.00 |  | 812,779 |  | $ | 3.96 |  | 3.21 |  | 812,779 |  | $ | 3.96
$ | 4.17 | - | 4.68 |  | 747,515 |  | $ | 4.30 |  | 5.94 |  | 357,926 |  | $ | 4.30
$ | 4.81 | - | 4.98 |  | 997,676 |  | $ | 4.92 |  | 7.88 |  | 389,871 |  | $ | 4.88
$ | 5.13 | - | 5.34 |  | 625,513 |  | $ | 5.23 |  | 8.74 |  | 49,980 |  | $ | 5.19
$ | 5.50 |  |  |  | 783,433 |  | $ | 5.50 |  | 0.88 |  | 783,433 |  | $ | 5.50
$ | 5.59 | - | 6.00 |  | 901,930 |  | $ | 5.77 |  | 5.53 |  | 532,248 |  | $ | 5.81
$ | 6.28 | - | 6.63 |  | 812,219 |  | $ | 6.48 |  | 6.36 |  | 645,440 |  | $ | 6.47
$ | 6.82 | - | 7.00 |  | 651,376 |  | $ | 6.90 |  | 6.06 |  | 398,669 |  | $ | 6.92
$ | 9.20 |  |  |  | 113,620 |  | $ | 9.20 |  | 5.07 |  | 113,620 |  | $ | 9.20
|  |  |  |  | 7,338,645 |  | $ | 5.15 |  | 5.25 |  | 4,976,550 |  | $ | 5.05
Summary of stock-based compensation expense by line item |
|  | Three Months Ended December 31, |  | Nine Months Ended December 31,
|  | 2015 |  | 2014 |  | 2015 |  | 2014
|  | (In thousands)
Cost of revenues |  | $ | 85 |  | $ | 93 |  | $ | 242 |  | $ | 296
Research and development |  |  | 208 |  |  | 220 |  |  | 649 |  |  | 709
Selling, general and administrative |  |  | 121 |  |  | 77 |  |  | 496 |  |  | 528
Total |  | $ | 414 |  | $ | 390 |  | $ | 1,387 |  | $ | 1,533
Schedule of weighted average assumptions |
|  | Three Months Ended December 31, |  | Nine Months Ended December 31,
|  | 2015 |  | 2014 |  | 2015 |  | 2014
|  | (In thousands) |  | (In thousands)
Stock Option Plans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate |  |  |  | 1.56 | % |  |  |  | 1.60 | % |  | 1.52 | - | 1.57 | % |  | 1.60 | - | 1.70 | %
Expected life (in years) |  |  |  | 5.00 |  |  |  |  | 5.00 |  |  | 5.00 |  |  |  |  |  |  | 5.00 |
Volatility |  |  |  | 36.3 | % |  |  |  | 41.3 | % |  | 36.3 | - | 38.0 | % |  | 41.3 | - | 44.8 | %
Dividend yield |  |  |  | — | % |  |  |  | — | % |  | — |  | — | % |  |  |  | — | %
Employee Stock Purchase Plan: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate |  |  |  | 0.15 | % |  |  |  | 0.05 | % |  | 0.09 | - | 0.15 | % |  |  |  | 0.05 | %
Expected life (in years) |  |  |  | 0.50 |  |  |  |  | 0.50 |  |  | 0.50 |  |  |  |  |  |  | 0.50 |
Volatility |  |  |  | 27.9 | % |  |  |  | 38.0 | % |  | 26.3 | - | 27.9 | % |  | 30.8 | - | 38.0 | %
Dividend yield |  |  |  | — | % |  |  |  | — | % |  |  |  | — | % |  |  |  | — | %

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration