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, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	$ 171,360	[1]	$ 204,838	[1]	$ 337,037	[1]	$ 405,428	[1]
Direct costs	110,856	[2]	127,770	[2]	219,857	[2]	255,152	[2]
Gross margin	60,504		77,068		117,180		150,276
Error Corrections and Prior Period Adjustments, Interim Periods of Fiscal Year	782
Temporary Contracting
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	127,995		149,629		256,836		300,066
Direct costs	107,617	[2]	123,186	[2]	213,983	[2]	247,256	[2]
Gross margin	20,378		26,443		42,853		52,810
Other
Revenue Direct Costs And Gross Margin Line Items [Line Items]
Revenue	43,365		55,209		80,201		105,362
Direct costs	3,239	[2]	4,584	[2]	5,874	[2]	7,896	[2]
Gross margin	$ 40,126		$ 50,625		$ 74,327		$ 97,466

[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.(2)The Company reclassified $782 of revenue within the Company's Australia operations related to permanent recruitment services from temporary contracting revenue to other revenue related to the three-month period ended March 31, 2013. to be consistent with the underlying nature of services being performed.