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v3.22.2.2

Note Q - Leases (Details Textual) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Sep. 25, 2022 | Mar. 27, 2022
Operating Lease Payments, Net Sublease Income | $ 884 |
Operating Lease, Liability, Current | 1,849 | $ 1,849
Operating Lease, Liability, Noncurrent | $ 5,752 | $ 6,487

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- Definition The amount of cash outflow for operating leases, net cash inflow for sublease income. + References No definition available. + Details
Name: | nath_OperatingLeasePaymentsNetSubleaseIncome
Namespace Prefix: | nath_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant