DESCRIPTION OF BUSINESS	9 Months Ended
Sep. 30, 2019
Description of Business [Abstract]
DESCRIPTION OF BUSINESS	DESCRIPTION OF BUSINESS The Company is comprised of the operations, assets, and liabilities of the Company's three regional businesses of Hudson Americas, Hudson Asia Pacific, and Hudson Europe ("Hudson regional businesses" or "Hudson"). The Company provides specialized professional-level recruitment and related talent solutions. During the first quarter of 2018, the Company’s core service offerings included Recruitment Process Outsourcing ("RPO") and Contracting, as well as other Permanent Recruitment and Talent Management Solutions. On March 31, 2018 the Company completed the sale of its other Permanent Recruitment and Talent Management Solutions ("RTM") businesses in three separate transactions and retained its RPO and Contracting businesses. The RTM businesses are reported as discontinued operations in 2018. For more information, see Note 5. As a result of the divestiture of the RTM businesses, the Company now operates directly in eleven countries with three reportable geographic business segments: Americas, Asia Pacific, and Europe. See Note 13 for further details regarding the reportable segments. The Company’s core service offering following the divestiture is RPO. The Company delivers RPO permanent recruitment and contracting outsourced recruitment solutions tailored to the individual needs of primarily mid-to-large-cap multinational companies. The Company's RPO delivery teams utilize state-of-the-art recruitment process methodologies and project management expertise in their flexible, turnkey solutions to meet clients' ongoing business needs. The Company's RPO services include complete recruitment outsourcing, project-based outsourcing, contingent workforce solutions, and recruitment consulting. Corporate expenses are reported separately from the reportable segments and pertain to certain functions, such as executive management, corporate governance, human resources, accounting, tax, marketing, information technology, and treasury. A portion of these expenses are attributed to the reportable segments for providing the above services to them and have been allocated to the segments as management service fees and are included in the segments’ non-operating other income (expense). On June 10, 2019, the Company announced a reverse stock split of its outstanding shares of common stock at a ratio of 1-for-10 (the “Reverse Split”) and that it had filed a Certificate of Amendment of the Company's Amended and Restated Certificate of Incorporation in order to effect the Reverse Split. The filed certificate also reduced the number of authorized shares of common stock to 20 million shares. The Reverse Split and reduction in authorized shares was approved by the Company's Board of Directors (the "Board") on February 25, 2019, and it was approved by the stockholders of the Company at the annual meeting on May 6, 2019. The Board approved the ratio of 1-for-10 on May 24, 2019, and the Reverse Split became effective as of the close of business on June 10, 2019. The Reverse Split had no effect on the par value of the Company's common stock but it reduced the number of issued and outstanding shares of common stock by a factor of 10. Accordingly, the issued and outstanding shares, stock-based compensation disclosures, net loss per share, and other share and per share disclosures for all periods presented have been retrospectively adjusted to reflect the impact of this Reverse Split.

DESCRIPTION OF BUSINESS

The Company is comprised of the operations, assets, and liabilities of the Company's three regional businesses of Hudson Americas, Hudson Asia Pacific, and Hudson Europe ("Hudson regional businesses" or "Hudson"). The Company provides specialized professional-level recruitment and related talent solutions. During the first quarter of 2018, the Company’s core service offerings included Recruitment Process Outsourcing ("RPO") and Contracting, as well as other Permanent Recruitment and Talent Management Solutions. On March 31, 2018 the Company completed the sale of its other Permanent Recruitment and Talent Management Solutions ("RTM") businesses in three separate transactions and retained its RPO and Contracting businesses. The RTM businesses are reported as discontinued operations in 2018. For more information, see Note 5.

As a result of the divestiture of the RTM businesses, the Company now operates directly in eleven countries with three reportable geographic business segments: Americas, Asia Pacific, and Europe. See Note 13 for further details regarding the reportable segments.

The Company’s core service offering following the divestiture is RPO. The Company delivers RPO permanent recruitment and contracting outsourced recruitment solutions tailored to the individual needs of primarily mid-to-large-cap multinational companies. The Company's RPO delivery teams utilize state-of-the-art recruitment process methodologies and project management expertise in their flexible, turnkey solutions to meet clients' ongoing business needs. The Company's RPO services include complete recruitment outsourcing, project-based outsourcing, contingent workforce solutions, and recruitment consulting.

Corporate expenses are reported separately from the reportable segments and pertain to certain functions, such as executive management, corporate governance, human resources, accounting, tax, marketing, information technology, and treasury. A portion of these expenses are attributed to the reportable segments for providing the above services to them and have been allocated to the segments as management service fees and are included in the segments’ non-operating other income (expense).

On June 10, 2019, the Company announced a reverse stock split of its outstanding shares of common stock at a ratio of 1-for-10 (the “Reverse Split”) and that it had filed a Certificate of Amendment of the Company's Amended and Restated Certificate of Incorporation in order to effect the Reverse Split. The filed certificate also reduced the number of authorized shares of common stock to 20 million shares. The Reverse Split and reduction in authorized shares was approved by the Company's Board of Directors (the "Board") on February 25, 2019, and it was approved by the stockholders of the Company at the annual meeting on May 6, 2019. The Board approved the ratio of 1-for-10 on May 24, 2019, and the Reverse Split became effective as of the close of business on June 10, 2019. The Reverse Split had no effect on the par value of the Company's common stock but it reduced the number of issued and outstanding shares of common stock by a factor of 10. Accordingly, the issued and outstanding shares, stock-based compensation disclosures, net loss per share, and other share and per share disclosures for all periods presented have been retrospectively adjusted to reflect the impact of this Reverse Split.