XML 69 R60.htm IDEA: XBRL DOCUMENT
v3.22.1

STOCK-BASED COMPENSATION (Details 4) $ / shares in Units, shares in Thousands, $ in Thousands | 9 Months Ended
--- | ---
Feb. 28, 2022 USD ($) $ / shares shares
$1.22-$1.34 |
Options outstanding, ending (in thousands) | shares | 51
Weighted average remaining contractual life (Years) options outstanding | 5 years 7 months 20 days
Weighted average exercise price outstanding, ending | $ / shares | $ 1.34
Option exercisable shares (in thousands) | shares | 51
Weighted average remaining contractual life (Years) options exercisable | 5 years 7 months 20 days
Weighted average exercise price for options exercisable | $ / shares | $ 1.34
$1.64-$1.86 |
Options outstanding, ending (in thousands) | shares | 671
Weighted average remaining contractual life (Years) options outstanding | 4 years 3 months 7 days
Weighted average exercise price outstanding, ending | $ / shares | $ 1.71
Option exercisable shares (in thousands) | shares | 387
Weighted average remaining contractual life (Years) options exercisable | 3 years 10 months 20 days
Weighted average exercise price for options exercisable | $ / shares | $ 1.69
$2.03-$2.46 |
Options outstanding, ending (in thousands) | shares | 547
Weighted average remaining contractual life (Years) options outstanding | 3 years 1 month 17 days
Weighted average exercise price outstanding, ending | $ / shares | $ 2.23
Option exercisable shares (in thousands) | shares | 447
Weighted average remaining contractual life (Years) options exercisable | 2 years 11 months 1 day
Weighted average exercise price for options exercisable | $ / shares | $ 2.23
$2.63-$2.93 |
Options outstanding, ending (in thousands) | shares | 223
Weighted average remaining contractual life (Years) options outstanding | 5 years 10 months 13 days
Weighted average exercise price outstanding, ending | $ / shares | $ 2.92
Option exercisable shares (in thousands) | shares | 47
Weighted average remaining contractual life (Years) options exercisable | 4 years 3 days
Weighted average exercise price for options exercisable | $ / shares | $ 2.86
$3.46-$3.93 |
Options outstanding, ending (in thousands) | shares | 104
Weighted average remaining contractual life (Years) options outstanding | 2 years 5 months 1 day
Weighted average exercise price outstanding, ending | $ / shares | $ 3.84
Option exercisable shares (in thousands) | shares | 104
Weighted average remaining contractual life (Years) options exercisable | 2 years 5 months 1 day
Weighted average exercise price for options exercisable | $ / shares | $ 3.84
$9.94-$19.85 |
Options outstanding, ending (in thousands) | shares | 12
Weighted average remaining contractual life (Years) options outstanding | 6 years 8 months 8 days
Weighted average exercise price outstanding, ending | $ / shares | $ 16.54
Option exercisable shares (in thousands) | shares | 1
Weighted average remaining contractual life (Years) options exercisable | 6 years 7 months 24 days
Weighted average exercise price for options exercisable | $ / shares | $ 19.46
$1.22-$19.85 |
Options outstanding, ending (in thousands) | shares | 1,608
Weighted average remaining contractual life (Years) options outstanding | 4 years 14 days
Weighted average exercise price outstanding, ending | $ / shares | $ 2.29
Option exercisable shares (in thousands) | shares | 1,037
Weighted average remaining contractual life (Years) options exercisable | 3 years 5 months 1 day
Weighted average exercise price for options exercisable | $ / shares | $ 2.19
Aggregate intrinsic value for options exercisable | $ | $ 11,831

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://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&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://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&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://fasb.org/us-gaap/role/ref/legacyRef -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=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&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 vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&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=aehr_RangeOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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