| Document and Entity Information Document | Aug. 04, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 04, 2022 |
| Entity Registrant Name | NV5 GLOBAL, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35849 |
| Entity Tax Identification Number | 45-3458017 |
| Entity Address, Address Line One | 200 South Park Road, |
| Entity Address, Address Line Two | Suite 350 |
| Entity Address, City or Town | Hollywood, |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33021 |
| City Area Code | 954 |
| Local Phone Number | 495-2112 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | NVEE |
| Security Exchange Name | NASDAQ |
| Entity Central Index Key | 0001532961 |
| Amendment Flag | false |
