REVENUE, DIRECT COSTS AND GROSS MARGIN Revenue, Direct Costs and Gross Margin (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	$ 167,365	[1]	$ 171,360	[1]	$ 329,226	[1]	$ 337,037	[1]
Direct costs	104,554	[2]	110,856	[2]	208,885	[2]	219,857	[2]
Gross margin	62,811		60,504		120,341		117,180
Temporary Contracting
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	119,344		127,995		238,677		256,836
Direct costs	100,880	[2]	107,617	[2]	201,795	[2]	213,983	[2]
Gross margin	18,464		20,378		36,882		42,853
Permanent Recruitment
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	35,094		31,357		65,224		57,838
Direct costs	680	[2]	429	[2]	1,167	[2]	1,038	[2]
Gross margin	34,414		30,928		64,057		56,800
Other Than Temporary Contracting and Permanent Recruitment
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	12,927		12,008		25,325		22,363
Direct costs	2,994	[2]	2,810	[2]	5,923	[2]	4,836	[2]
Gross margin	$ 9,933		$ 9,198		$ 19,402		$ 17,527

[1] Revenue by geographic region disclosed above is net of any inter-segment revenue and, therefore, represents only revenue from external customers according to the location of the operating subsidiary.

[2] Direct costs in Temporary Contracting include the direct staffing costs of salaries, payroll taxes, employee benefits, travel expenses, rent and insurance costs for the Company’s contractors and reimbursed out-of-pocket expenses and other direct costs. Other than reimbursed out-of-pocket expenses, there are no other direct costs associated with the Permanent Recruitment and Other category. Gross margin represents revenue less direct costs. The region where services are provided, the mix of contracting and permanent recruitment, and the functional nature of the staffing services provided can affect gross margin. The salaries, commissions, payroll taxes and employee benefits related to recruitment professionals are included under the caption "Selling, general and administrative expenses" in the Condensed Consolidated Statements of Operations and Other Comprehensive Income (Loss).