Acquisition	12 Months Ended
Dec. 31, 2019
Business Combinations [Abstract]
Acquisition	2Get Holdings Limited In September 2019, the Company acquired 2GET Holdings Limited ("2GET"), a Brazil-based provider of executive search services, and its wholly owned subsidiaries. Under the terms of the purchase agreement, the Company paid $5.2 million of initial consideration for substantially all of the outstanding equity of 2GET. The acquisition was funded with $4.1 million of existing cash at closing and $1.1 million of the Company's common stock transferred in October 2019. The common stock transferred as consideration was reissued from the Company's treasury stock. The former owners of 2GET are eligible to receive additional cash consideration, which the Company estimates to be between $5.0 million and $15.0 million, based on the achievement of certain revenue and EBITDA milestones for the period from acquisition through 2023. The additional consideration is linked to future service with the Company and is accounted for as compensation expense. The Company recorded $0.7 million of intangible assets, consisting of the trade name of $0.4 million and customer relationships of $0.3 million, $3.8 million of goodwill, and $0.7 million of net working capital. The goodwill is primarily related to the acquired workforce and strategic fit. The Company will not be able to deduct the recorded goodwill for tax purposes. Amrop A/S In January 2018, the Company acquired Amrop A/S ("Amrop"), a Denmark-based provider of executive search services for 24.3 million Danish Kroner (equivalent to $3.9 million on the acquisition date) of initial consideration which was funded from existing cash. The former owners of Amrop are expected to receive additional cash consideration based on fee revenue generated during the two-year period following the completion of the acquisition. When estimating the value of future cash consideration, the Company has accrued $5.3 million as of December 31, 2019. The Company recorded $1.7 million of intangible assets related to customer relationships and $5.5 million of goodwill. The goodwill is primarily related to the acquired workforce and strategic fit.

2Get Holdings Limited

In September 2019, the Company acquired 2GET Holdings Limited ("2GET"), a Brazil-based provider of executive search services, and its wholly owned subsidiaries. Under the terms of the purchase agreement, the Company paid $5.2 million of initial consideration for substantially all of the outstanding equity of 2GET. The acquisition was funded with $4.1 million of existing cash at closing and $1.1 million of the Company's common stock transferred in October 2019. The common stock transferred as consideration was reissued from the Company's treasury stock. The former owners of 2GET are eligible to receive additional cash consideration, which the Company estimates to be between $5.0 million and $15.0 million, based on the achievement of certain revenue and EBITDA milestones for the period from acquisition through 2023. The additional consideration is linked to future service with the Company and is accounted for as compensation expense. The Company recorded $0.7 million of intangible assets, consisting of the trade name of $0.4 million and customer relationships of $0.3 million, $3.8 million of goodwill, and $0.7 million of net working capital. The goodwill is primarily related to the acquired workforce and strategic fit. The Company will not be able to deduct the recorded goodwill for tax purposes.

Amrop A/S

In January 2018, the Company acquired Amrop A/S ("Amrop"), a Denmark-based provider of executive search services for 24.3 million Danish Kroner (equivalent to $3.9 million on the acquisition date) of initial consideration which was funded from existing cash. The former owners of Amrop are expected to receive additional cash consideration based on fee revenue generated during the two-year period following the completion of the acquisition. When estimating the value of future cash consideration, the Company has accrued $5.3 million as of December 31, 2019. The Company recorded $1.7 million of intangible assets related to customer relationships and $5.5 million of goodwill. The goodwill is primarily related to the acquired workforce and strategic fit.