XML 77 R67.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Stockholder's Equity Stock Options Outstanding And Exercisable (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Options Outstanding, Number of Shares | 4,793,266 | 5,327,907 | 6,002,382 | 5,991,544
Options Outstanding, Weighted-Average Exercise Price Per Share | $ 6.29 | $ 5.19 | $ 4.14 | $ 2.52
Options Exercisable, Number of Shares | 2,950,697 |  |  |
Options Exercisable, Weighted-Average Exercise Price Per Share | $ 4.99 |  |  |
$0.55 - $1.27 |  |  |  |
Range of Exercise Prices, Minimum | 0.55 |  |  |
Range of Exercise Prices, Maximum | $ 1.27 |  |  |
Options Outstanding, Number of Shares | 1,079,767 |  |  |
Options Outstanding, Weighted-Average Exercise Price Per Share | $ 1.13 |  |  |
Options Outstanding, Weighted-Average Remaining Contractual Term (in years) | 1 year 252 days |  |  |
Options Outstanding, Aggregate Intrinsic Value | $ 9,589,205 |  |  |
Options Exercisable, Number of Shares | 1,079,767 |  |  |
Options Exercisable, Weighted-Average Exercise Price Per Share | $ 1.13 |  |  |
Options Exercisable, Aggregate Intrinsic Value | $ 9,589,205 |  |  |
$1.33 - $6.86 |  |  |  |
Range of Exercise Prices, Minimum | $ 1.33 |  |  |
Range of Exercise Prices, Maximum | $ 6.86 |  |  |
Options Outstanding, Number of Shares | 1,500,242 |  |  |
Options Outstanding, Weighted-Average Exercise Price Per Share | $ 5.77 |  |  |
Options Outstanding, Weighted-Average Remaining Contractual Term (in years) | 7 years |  |  |
Options Outstanding, Aggregate Intrinsic Value | $ 6,368,920 |  |  |
Options Exercisable, Number of Shares | 1,000,701 |  |  |
Options Exercisable, Weighted-Average Exercise Price Per Share | $ 5.27 |  |  |
Options Exercisable, Aggregate Intrinsic Value | $ 4,744,126 |  |  |
$7.52 - $8.93 |  |  |  |
Range of Exercise Prices, Minimum | $ 7.52 |  |  |
Range of Exercise Prices, Maximum | $ 8.93 |  |  |
Options Outstanding, Number of Shares | 996,150 |  |  |
Options Outstanding, Weighted-Average Exercise Price Per Share | $ 8.29 |  |  |
Options Outstanding, Weighted-Average Remaining Contractual Term (in years) | 9 years 36 days |  |  |
Options Outstanding, Aggregate Intrinsic Value | $ 1,723,062 |  |  |
Options Exercisable, Number of Shares | 184,115 |  |  |
Options Exercisable, Weighted-Average Exercise Price Per Share | $ 8.14 |  |  |
Options Exercisable, Aggregate Intrinsic Value | $ 345,844 |  |  |
$9.21 - $9.74 |  |  |  |
Range of Exercise Prices, Minimum | $ 9.21 |  |  |
Range of Exercise Prices, Maximum | $ 9.74 |  |  |
Options Outstanding, Number of Shares | 983,835 |  |  |
Options Outstanding, Weighted-Average Exercise Price Per Share | $ 9.62 |  |  |
Options Outstanding, Weighted-Average Remaining Contractual Term (in years) | 7 years 180 days |  |  |
Options Outstanding, Aggregate Intrinsic Value | $ 384,463 |  |  |
Options Exercisable, Number of Shares | 603,302 |  |  |
Options Exercisable, Weighted-Average Exercise Price Per Share | $ 9.63 |  |  |
Options Exercisable, Aggregate Intrinsic Value | $ 232,944 |  |  |
$10.50 - $11.26 |  |  |  |
Range of Exercise Prices, Minimum | $ 10.50 |  |  |
Range of Exercise Prices, Maximum | $ 11.26 |  |  |
Options Outstanding, Number of Shares | 233,272 |  |  |
Options Outstanding, Weighted-Average Exercise Price Per Share | $ 10.95 |  |  |
Options Outstanding, Weighted-Average Remaining Contractual Term (in years) | 8 years 180 days |  |  |
Options Outstanding, Aggregate Intrinsic Value | $ 0 |  |  |
Options Exercisable, Number of Shares | 82,812 |  |  |
Options Exercisable, Weighted-Average Exercise Price Per Share | $ 11.10 |  |  |
Options Exercisable, Aggregate Intrinsic Value | $ 0 |  |  |
$0.55 - $11.26 |  |  |  |
Range of Exercise Prices, Minimum | $ 0.55 |  |  |
Range of Exercise Prices, Maximum | $ 11.26 |  |  |
Options Outstanding, Number of Shares | 4,793,266 |  |  |
Options Outstanding, Aggregate Intrinsic Value | $ 18,065,650 |  |  |
Options Exercisable, Number of Shares | 2,950,697 |  |  |
Options Exercisable, Aggregate Intrinsic Value | $ 14,912,119 |  |  |

X
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options outstanding, including both vested and non-vested options. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding. + 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 (e) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + 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_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=EGHT_ZeroPointFiveFiveToOnePointTwoSevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=EGHT_OnePointThreeThreeToSixPointEightSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=EGHT_SecenPointFiveTwoToEightPointNineThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=EGHT_NinePointTwoOneToNinePointSevenZeroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=EGHT_TenPointFiveZeroToElevenPointTwoSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=EGHT_ZeroPointFiveFiveToElevenPointTwoSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |