SEGMENT AND GEOGRAPHIC DATA Geographic Data Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenue	$ 161,861	[1]	$ 165,678	[1]
Long-lived assets, net of accumulated depreciation and amortization	16,101	[2]	20,993	[2]
Net assets	71,235		96,868		74,385
United Kingdon [Member]
Segment Reporting Information [Line Items]
Revenue	50,859	[1]	47,078	[1]
Long-lived assets, net of accumulated depreciation and amortization	2,976	[2]	3,548	[2]
Net assets	22,170		25,426
Australia [Member]
Segment Reporting Information [Line Items]
Revenue	42,448	[1]	42,042	[1]
Long-lived assets, net of accumulated depreciation and amortization	5,968	[2]	8,595	[2]
Net assets	18,510		29,687
United States
Segment Reporting Information [Line Items]
Revenue	26,638	[1]	36,952	[1]
Long-lived assets, net of accumulated depreciation and amortization	2,999	[2]	3,866	[2]
Net assets	10,623		21,501
Europe
Segment Reporting Information [Line Items]
Revenue	27,709	[1]	25,175	[1]
Long-lived assets, net of accumulated depreciation and amortization	542	[2]	1,147	[2]
Net assets	8,653		6,069
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	13,982	[1]	14,160	[1]
Long-lived assets, net of accumulated depreciation and amortization	3,582	[2]	3,785	[2]
Net assets	11,071		13,938
Other Americas
Segment Reporting Information [Line Items]
Revenue	225	[1]	271	[1]
Long-lived assets, net of accumulated depreciation and amortization	34	[2]	52	[2]
Net assets	$ 208		$ 247

[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] Comprised of property and equipment and intangibles. Corporate assets are included in the United States.