v3.25.4
Document And Entity Information
Mar. 04, 2026
Document Information [Line Items]  
Entity, Registrant Name Natural Grocers by Vitamin Cottage, Inc.
Document, Type 8-K
Document, Period End Date Mar. 04, 2026
Entity, Incorporation, State or Country Code DE
Entity, File Number 001-35608
Entity, Tax Identification Number 45-5034161
Entity, Address, Address Line One 12612 West Alameda Parkway
Entity, Address, City or Town Lakewood
Entity, Address, State or Province CO
Entity, Address, Postal Zip Code 80228
City Area Code 303
Local Phone Number 986-4600
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol NGVC
Security Exchange Name NYSE
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0001547459