SEGMENT AND GEOGRAPHIC DATA Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenue	$ 101,227	$ 124,317
Long-lived assets, net of accumulated depreciation and amortization	9,949	10,897
Net assets	56,037	50,452	$ 61,180
United Kingdon
Segment Reporting Information [Line Items]
Revenue	34,196	38,341
Long-lived assets, net of accumulated depreciation and amortization	1,684	1,752
Net assets	15,771	15,141
Australia
Segment Reporting Information [Line Items]
Revenue	39,132	39,041
Long-lived assets, net of accumulated depreciation and amortization	4,191	4,629
Net assets	10,046	11,633
United States
Segment Reporting Information [Line Items]
Revenue	3,634	10,826
Long-lived assets, net of accumulated depreciation and amortization	623	1,512
Net assets	8,632	3,742
Europe
Segment Reporting Information [Line Items]
Revenue	12,123	21,859
Long-lived assets, net of accumulated depreciation and amortization	167	321
Net assets	8,211	8,866
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	11,939	14,098
Long-lived assets, net of accumulated depreciation and amortization	3,284	2,671
Net assets	13,435	11,088
Other Americas
Segment Reporting Information [Line Items]
Revenue	203	152
Long-lived assets, net of accumulated depreciation and amortization	0	12
Net assets	$ (58)	$ (18)