SEGMENT AND GEOGRAPHIC DATA Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenue	$ 113,067	$ 122,743	$ 214,294	$ 247,060
Long-lived assets, net of accumulated depreciation and amortization	9,365	10,261	9,365	10,261
Net assets	48,757	68,615	48,757	68,615	$ 61,180
United Kingdon
Segment Reporting Information [Line Items]
Revenue	32,464	39,640	66,661	77,980
Long-lived assets, net of accumulated depreciation and amortization	1,317	1,874	1,317	1,874
Net assets	14,221	17,205	14,221	17,205
Australia
Segment Reporting Information [Line Items]
Revenue	47,882	41,340	87,014	80,381
Long-lived assets, net of accumulated depreciation and amortization	4,268	4,473	4,268	4,473
Net assets	9,450	11,309	9,450	11,309
United States
Segment Reporting Information [Line Items]
Revenue	3,462	10,022	7,096	20,849
Long-lived assets, net of accumulated depreciation and amortization	544	1,191	544	1,191
Net assets	2,037	18,902	2,037	18,902
Europe
Segment Reporting Information [Line Items]
Revenue	14,903	15,547	27,026	37,405
Long-lived assets, net of accumulated depreciation and amortization	180	90	180	90
Net assets	8,987	9,079	8,987	9,079
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	14,157	16,033	26,095	30,133
Long-lived assets, net of accumulated depreciation and amortization	3,056	2,617	3,056	2,617
Net assets	14,141	12,172	14,141	12,172
Other Americas
Segment Reporting Information [Line Items]
Revenue	199	161	402	312
Long-lived assets, net of accumulated depreciation and amortization	0	16	0	16
Net assets	$ (79)	$ (52)	$ (79)	$ (52)