XML 102 R83.htm IDEA: XBRL DOCUMENT
v3.26.1

Operating Loss Carry forwards (Detail) $ in Millions | 12 Months Ended
--- | ---
May 31, 2026 USD ($)
Operating Loss Carryforwards [Line Items] |
Total net operating loss carryforwards | $ 48.1
U.S - Federal |
Operating Loss Carryforwards [Line Items] |
Total net operating loss carryforwards | $ 0.1
Total net operating loss carryforwards expiration description | 2038
U.S - State |
Operating Loss Carryforwards [Line Items] |
Total net operating loss carryforwards | $ 32.3
Total net operating loss carryforwards expiration description | 2035 to indefinite
Foreign |
Operating Loss Carryforwards [Line Items] |
Total net operating loss carryforwards | $ 15.7
Total net operating loss carryforwards expiration description | 2028 to indefinite

X
- Definition Operating Loss Carry forwards Expiration Description. + References No definition available. + Details
Name: | neog_OperatingLossCarryForwardsExpirationDescription
Namespace Prefix: | neog_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
Name: | us-gaap_OperatingLossCarryforwardsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |