| Cover | Sep. 28, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 28, 2021 |
| Entity File Number | 001-11916 |
| Entity Registrant Name | Wireless Telecom Group, Inc. |
| Entity Central Index Key | 0000878828 |
| Entity Tax Identification Number | 22-2582295 |
| Entity Incorporation, State or Country Code | NJ |
| Entity Address, Address Line One | 25 Eastmans Road |
| Entity Address, City or Town | Parsippany |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07054 |
| City Area Code | (973) |
| Local Phone Number | 386-9696 |
| 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 | WTT |
| Security Exchange Name | NYSEAMER |
| Entity Emerging Growth Company | false |
