SEGMENT AND GEOGRAPHIC DATA Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013 segments		Jun. 30, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of Reportable Segments					3
Revenue, from external customers	$ 171,360		$ 204,838		$ 337,037		$ 405,428
Inter-segment revenue	0		0		0		0
Total revenue	171,360	[1]	204,838	[1]	337,037	[1]	405,428	[1]
Gross margin, from external customer	60,504		77,068		117,180		150,276
Inter-segment gross margin	0		0		0		0
Gross margin	60,504		77,068		117,180		150,276
Business reorganization expenses (recovery)	1,249		5,090		3,231		6,030
EBITDA (loss)	(3,862)	[2]	(1,926)	[2]	(10,487)	[2]	(4,127)	[2]
Depreciation and amortization	1,656		1,610		3,304		3,115
Intercompany interest income (expense), net	0		0		0		0
Interest income (expense), net	(155)		(189)		(300)		(349)
Income (loss) before provision for income taxes	(5,673)		(3,725)		(14,091)		(7,591)
Accounts receivable, net	103,586		126,026		103,586		126,026		107,216
Long-lived assets, net of accumulated depreciation and amortization	18,737	[3]	23,309	[3]	18,737	[3]	23,309	[3]
Total assets	175,361		206,651		175,361		206,651		193,468
Hudson Americas
Segment Reporting Information [Line Items]
Revenue, from external customers	37,327		45,487		74,549		90,656
Inter-segment revenue	0		0		(1)		0
Total revenue	37,327		45,487		74,548		90,656
Gross margin, from external customer	9,245		12,359		17,389		24,189
Inter-segment gross margin	0		(5)		(2)		(8)
Gross margin	9,245		12,354		17,387		24,181
Business reorganization expenses (recovery)	325		749		308		769
EBITDA (loss)	386	[2]	758	[2]	(560)	[2]	267	[2]
Depreciation and amortization	249		276		501		595
Intercompany interest income (expense), net	0		0		0		0
Interest income (expense), net	(8)		(14)		(17)		(33)
Income (loss) before provision for income taxes	129		468		(1,078)		(361)
Accounts receivable, net	25,284		27,639		25,284		27,639
Long-lived assets, net of accumulated depreciation and amortization	1,913		2,358		1,913		2,358
Total assets	30,669		32,942		30,669		32,942
Hudson Asia Pacific
Segment Reporting Information [Line Items]
Revenue, from external customers	62,869		76,926		119,070		151,189
Inter-segment revenue	0		21		0		31
Total revenue	62,869		76,947		119,070		151,220
Gross margin, from external customer	24,276		31,901		45,768		61,214
Inter-segment gross margin	(18)		(7)		(43)		(12)
Gross margin	24,258		31,894		45,725		61,202
Business reorganization expenses (recovery)	0		1,007		102		1,074
EBITDA (loss)	223	[2]	622	[2]	(644)	[2]	630	[2]
Depreciation and amortization	826		794		1,657		1,488
Intercompany interest income (expense), net	(601)		(771)		(1,266)		(2,516)
Interest income (expense), net	(51)		(77)		(92)		(143)
Income (loss) before provision for income taxes	(1,255)		(1,020)		(3,659)		(3,517)
Accounts receivable, net	30,602		42,750		30,602		42,750
Long-lived assets, net of accumulated depreciation and amortization	10,690		13,917		10,690		13,917
Total assets	66,093		80,676		66,093		80,676
Hudson Europe
Segment Reporting Information [Line Items]
Revenue, from external customers	71,164		82,425		143,418		163,583
Inter-segment revenue	16		19		41		36
Total revenue	71,180		82,444		143,459		163,619
Gross margin, from external customer	26,983		32,808		54,023		64,873
Inter-segment gross margin	18		14		45		20
Gross margin	27,001		32,822		54,068		64,893
Business reorganization expenses (recovery)	556		3,149		2,427		3,869
EBITDA (loss)	(2,155)	[2]	(2,305)	[2]	(5,607)	[2]	(3,391)	[2]
Depreciation and amortization	420		353		825		716
Intercompany interest income (expense), net	(110)		(108)		(217)		(216)
Interest income (expense), net	10		3		17		21
Income (loss) before provision for income taxes	(2,675)		(2,763)		(6,632)		(4,302)
Accounts receivable, net	47,700		55,637		47,700		55,637
Long-lived assets, net of accumulated depreciation and amortization	4,485		4,766		4,485		4,766
Total assets	71,052		77,418		71,052		77,418
Corporate
Segment Reporting Information [Line Items]
Revenue, from external customers	0		0		0		0
Inter-segment revenue	0		0		0		0
Total revenue	0		0		0		0
Gross margin, from external customer	0		0		0		0
Inter-segment gross margin	0		0		0		0
Gross margin	0		0		0		0
Business reorganization expenses (recovery)	368		185		394		318
EBITDA (loss)	(2,316)	[2]	(1,001)	[2]	(3,676)	[2]	(1,633)	[2]
Depreciation and amortization	161		187		321		316
Intercompany interest income (expense), net	711		879		1,483		2,733
Interest income (expense), net	(106)		(101)		(208)		(194)
Income (loss) before provision for income taxes	(1,872)		(410)		(2,722)		590
Accounts receivable, net	0		0		0		0
Long-lived assets, net of accumulated depreciation and amortization	1,649		2,268		1,649		2,268
Total assets	7,547		15,615		7,547		15,615
Inter-segment elimination
Segment Reporting Information [Line Items]
Revenue, from external customers	0		0		0		0
Inter-segment revenue	(16)		(40)		(40)		(67)
Total revenue	(16)		(40)		(40)		(67)
Gross margin, from external customer	0		0		0		0
Inter-segment gross margin	0		(2)		0		0
Gross margin	0		(2)		0		0
Business reorganization expenses (recovery)	0		0		0		0
EBITDA (loss)	0	[2]	0	[2]	0	[2]	0	[2]
Depreciation and amortization	0		0		0		0
Intercompany interest income (expense), net	0		0		0		(1)
Interest income (expense), net	0		0		0		0
Income (loss) before provision for income taxes	0		0		0		(1)
Accounts receivable, net	0		0		0		0
Long-lived assets, net of accumulated depreciation and amortization	0		0		0		0
Total assets	$ 0		$ 0		$ 0		$ 0

[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] SEC") Regulation S-K 229.10(e)1(ii)(A) defines EBITDA as earnings before interest, taxes, depreciation and amortization. EBITDA is presented to provide additional information to investors about the Company's operations on a basis consistent with the measures that the Company uses to manage its operations and evaluate its performance. Management also uses this measurement to evaluate working capital requirements. EBITDA should not be considered in isolation or as a substitute for operating income and net income prepared in accordance with U.S. GAAP or as a measure of the Company's profitability.

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