| Cover | Mar. 07, 2022 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 7, 2022 |
| Entity Registrant Name | HUDSON GLOBAL, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38704 |
| Entity Tax Identification Number | 59-3547281 |
| Entity Address, Address Line One | 53 Forest Avenue |
| Entity Address, Address Line Two | Suite 102 |
| Entity Address, City or Town | Old Greenwich |
| Entity Address, State or Province | CT |
| Entity Address, Postal Zip Code | 06870 |
| City Area Code | 203 |
| Local Phone Number | 409-5628 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001210708 |
| Amendment Flag | false |
| Common Stock | The NASDAQ Stock Market LLC | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.001 par value |
| Trading Symbol | HSON |
| Security Exchange Name | NASDAQ |
| Preferred Share Purchase Rights | The NASDAQ Stock Market LLC | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Preferred Share Purchase Rights |
| Security Exchange Name | NASDAQ |
| No Trading Symbol Flag | true |
