REVENUE, DIRECT COSTS AND GROSS MARGIN Revenue, Direct Costs and Gross Margin (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	$ 187,873	[1]	$ 245,081	[1]	$ 593,301	[1]	$ 710,998	[1]
Direct costs	120,207	[2]	152,089	[2]	375,359	[2]	441,341	[2]
Gross margin	67,666		92,992		217,942		269,657
Temporary Contracting
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	142,418		182,867		442,484		526,734
Direct costs	117,419	[2]	148,513	[2]	364,675	[2]	430,338	[2]
Gross margin	24,999		34,354		77,809		96,396
Other
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	45,455		62,214		150,817		184,264
Direct costs	2,788	[2]	3,576	[2]	10,684	[2]	11,003	[2]
Gross margin	$ 42,667		$ 58,638		$ 140,133		$ 173,261

[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 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.