| Cover | Nov. 04, 2021 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 4, 2021 |
| Entity File Number | 001-35774 |
| Entity Registrant Name | INNODATA INC. |
| Entity Central Index Key | 0000903651 |
| Entity Tax Identification Number | 13-3475943 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 55 Challenger Road |
| Entity Address, City or Town | Ridgefield Park |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07660 |
| City Area Code | 201 |
| Local Phone Number | 371-8000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Class A [Member] | |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | INOD |
| Security Exchange Name | NASDAQ |
| Preferred Stock Purchase Right [Member] | |
| Title of 12(b) Security | Preferred Stock Purchase Right |
| No Trading Symbol Flag | true |
