REVENUE, DIRECT COSTS AND GROSS MARGIN Revenue, Direct Costs and Gross Margin (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	$ 165,678	[1]	$ 200,590	[1]
Direct costs	109,001	[2]	127,382	[2]
Gross margin	56,677		73,208
Temporary Contracting
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	128,841		150,437
Direct costs	106,366	[2]	124,071	[2]
Gross margin	22,475		26,366
Other
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	36,837		50,153
Direct costs	2,635	[2]	3,311	[2]
Gross margin	$ 34,202		$ 46,842

[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 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 Other category, which includes the search, permanent recruitment and other human resource solutions’ revenue. 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 in selling, general and administrative expenses.