SEGMENT AND GEOGRAPHIC DATA Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended					6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011 region	Jun. 30, 2011		Jun. 30, 2012 segments		Jun. 30, 2011
Segment Reporting Information [Line Items]
Operating Segments (in regions)			3
Number of reportable segments (in segments)			3			3
Revenue, from external customers	$ 204,838			$ 247,378		$ 405,428		$ 465,917
Inter-segment revenue	0			0		0		0
Total revenue	204,838	[1]		247,378	[1]	405,428	[1]	465,917	[1]
Gross margin, from external customer	77,068			95,467		150,276		176,665
Inter-segment gross margin	0			0		0		0
Gross margin	77,068			95,467		150,276		176,665
Business reorganization expenses (recovery)	5,090			396		6,030		747
EBITDA (loss)	(1,926)	[2]		7,661	[2]	(4,127)	[2]	10,187	[2]
Depreciation and amortization	1,610			1,636		3,115		3,213
Intercompany interest income (expense), net	0			0		0		0
Interest income (expense), net	(189)			(375)		(349)		(581)
Income (loss) before provision for income taxes	(3,725)			5,650		(7,591)		6,393
Accounts receivable, net	126,026		131,489	159,383		126,026		159,383
Long-lived assets, net of accumulated depreciation and amortization	23,309	[3]		19,331	[3]	23,309	[3]	19,331	[3]
Total assets	206,651		216,546	244,515		206,651		244,515
Hudson Americas
Segment Reporting Information [Line Items]
Revenue, from external customers	45,487			50,912		90,656		96,725
Inter-segment revenue	0			0		0		(2)
Total revenue	45,487			50,912		90,656		96,723
Gross margin, from external customer	12,359			13,021		24,189		23,379
Inter-segment gross margin	(5)			(5)		(8)		(19)
Gross margin	12,354			13,016		24,181		23,360
Business reorganization expenses (recovery)	749			0		769		0
EBITDA (loss)	758	[2]		1,160	[2]	267	[2]	781	[2]
Depreciation and amortization	276			180		595		502
Intercompany interest income (expense), net	0			0		0		0
Interest income (expense), net	(14)			(1)		(33)		(2)
Income (loss) before provision for income taxes	468			979		(361)		277
Accounts receivable, net	27,639			31,947		27,639		31,947
Long-lived assets, net of accumulated depreciation and amortization	2,358			2,040		2,358		2,040
Total assets	32,942			36,641		32,942		36,641
Hudson Asia Pacific
Segment Reporting Information [Line Items]
Revenue, from external customers	76,926			96,275		151,189		175,291
Inter-segment revenue	21			1		31		7
Total revenue	76,947			96,276		151,220		175,298
Gross margin, from external customer	31,901			40,218		61,214		72,122
Inter-segment gross margin	(7)			(53)		(12)		(55)
Gross margin	31,894			40,165		61,202		72,067
Business reorganization expenses (recovery)	1,007			0		1,074		0
EBITDA (loss)	622	[2]		3,810	[2]	630	[2]	5,822	[2]
Depreciation and amortization	794			793		1,488		1,512
Intercompany interest income (expense), net	(771)			(1,898)		(2,516)		(3,691)
Interest income (expense), net	(77)			(208)		(143)		(311)
Income (loss) before provision for income taxes	(1,020)			911		(3,517)		308
Accounts receivable, net	42,750			59,941		42,750		59,941
Long-lived assets, net of accumulated depreciation and amortization	13,917			10,010		13,917		10,010
Total assets	80,676			89,845		80,676		89,845
Hudson Europe
Segment Reporting Information [Line Items]
Revenue, from external customers	82,425			100,191		163,583		193,901
Inter-segment revenue	19			70		36		79
Total revenue	82,444			100,261		163,619		193,980
Gross margin, from external customer	32,808			42,228		64,873		81,164
Inter-segment gross margin	14			53		20		69
Gross margin	32,822			42,281		64,893		81,233
Business reorganization expenses (recovery)	3,149			396		3,869		747
EBITDA (loss)	(2,305)	[2]		2,735	[2]	(3,391)	[2]	4,910	[2]
Depreciation and amortization	353			421		716		888
Intercompany interest income (expense), net	(108)			(130)		(216)		(240)
Interest income (expense), net	3			(6)		21		1
Income (loss) before provision for income taxes	(2,763)			2,178		(4,302)		3,783
Accounts receivable, net	55,637			67,495		55,637		67,495
Long-lived assets, net of accumulated depreciation and amortization	4,766			4,644		4,766		4,644
Total assets	77,418			107,402		77,418		107,402
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)	185			0		318		0
EBITDA (loss)	(1,001)	[2]		(44)	[2]	(1,633)	[2]	(1,326)	[2]
Depreciation and amortization	187			242		316		311
Intercompany interest income (expense), net	879			2,028		2,732		3,929
Interest income (expense), net	(101)			(160)		(194)		(269)
Income (loss) before provision for income taxes	(410)			1,582		589		2,023
Accounts receivable, net	0			0		0		0
Long-lived assets, net of accumulated depreciation and amortization	2,268			2,637		2,268		2,637
Total assets	15,615			10,627		15,615		10,627
Inter-segment elimination
Segment Reporting Information [Line Items]
Revenue, from external customers	0			0		0		0
Inter-segment revenue	(40)			(71)		(67)		(84)
Total revenue	(40)			(71)		(67)		(84)
Gross margin, from external customer	0			0		0		0
Inter-segment gross margin	(2)			5		0		5
Gross margin	(2)			5		0		5
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		2
Interest income (expense), net	0			0		0		0
Income (loss) before provision for income taxes	0			0		0		2
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.