SEGMENT AND GEOGRAPHIC DATA Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013 segments		Sep. 30, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of Reportable Segments					3
Revenue, from external customers	$ 163,587		$ 187,873		$ 500,624		$ 593,301
Inter-segment revenue	0		0		0		0
Total revenue	163,587	[1]	187,873	[1]	500,624	[1]	593,301	[1]
Gross margin, from external customer	55,796		67,666		172,976		217,942
Inter-segment gross margin	0		0		0		0
Gross margin	55,796		67,666		172,976		217,942
Business reorganization expenses (recovery)	728		1,520		3,959		7,551
EBITDA (loss)	(3,315)	[2]	663	[2]	(13,802)	[2]	(3,464)	[2]
Depreciation and amortization	1,529		1,672		4,833		4,788
Intercompany interest income (expense), net	0		0		0		0
Interest income (expense), net	(158)		(161)		(458)		(510)
Income (loss) before provision for income taxes	(5,002)		(1,170)		(19,093)		(8,762)
Accounts receivable, net	98,317		115,548		98,317		115,548		107,216
Long-lived assets, net of accumulated depreciation and amortization	18,448	[3]	22,850	[3]	18,448	[3]	22,850	[3]
Total assets	174,905		199,826		174,905		199,826		193,468
Hudson Americas
Segment Reporting Information [Line Items]
Revenue, from external customers	34,842		39,102		109,391		129,758
Inter-segment revenue	0		0		(2)		0
Total revenue	34,842		39,102		109,389		129,758
Gross margin, from external customer	9,073		9,587		26,462		33,776
Inter-segment gross margin	0		(1)		(3)		(9)
Gross margin	9,073		9,586		26,459		33,767
Business reorganization expenses (recovery)	208		282		516		1,051
EBITDA (loss)	654	[2]	(389)	[2]	94	[2]	(122)	[2]
Depreciation and amortization	244		255		745		850
Intercompany interest income (expense), net	0		0		0		0
Interest income (expense), net	(3)		(13)		(20)		(46)
Income (loss) before provision for income taxes	407		(657)		(671)		(1,018)
Accounts receivable, net	21,563		25,570		21,563		25,570
Long-lived assets, net of accumulated depreciation and amortization	1,718		2,164		1,718		2,164
Total assets	26,255		30,691		26,255		30,691
Hudson Asia Pacific
Segment Reporting Information [Line Items]
Revenue, from external customers	58,274		73,437		177,344		224,627
Inter-segment revenue	0		17		0		47
Total revenue	58,274		73,454		177,344		224,674
Gross margin, from external customer	21,348		29,852		67,117		91,067
Inter-segment gross margin	(28)		(1)		(71)		(14)
Gross margin	21,320		29,851		67,046		91,053
Business reorganization expenses (recovery)	0		190		102		1,264
EBITDA (loss)	(125)	[2]	3,388	[2]	(772)	[2]	4,017	[2]
Depreciation and amortization	758		864		2,414		2,351
Intercompany interest income (expense), net	(559)		(747)		(1,826)		(3,264)
Interest income (expense), net	(58)		(55)		(149)		(197)
Income (loss) before provision for income taxes	(1,500)		1,722		(5,161)		(1,795)
Accounts receivable, net	28,883		38,171		28,883		38,171
Long-lived assets, net of accumulated depreciation and amortization	10,193		13,631		10,193		13,631
Total assets	65,829		79,747		65,829		79,747
Hudson Europe
Segment Reporting Information [Line Items]
Revenue, from external customers	70,471		75,334		213,889		238,916
Inter-segment revenue	36		33		78		70
Total revenue	70,507		75,367		213,967		238,986
Gross margin, from external customer	25,375		28,227		79,397		93,099
Inter-segment gross margin	28		2		87		24
Gross margin	25,403		28,229		79,484		93,123
Business reorganization expenses (recovery)	152		1,048		2,579		4,917
EBITDA (loss)	(625)	[2]	(2,165)	[2]	(6,234)	[2]	(5,556)	[2]
Depreciation and amortization	366		392		1,190		1,108
Intercompany interest income (expense), net	(181)		(109)		(398)		(326)
Interest income (expense), net	(1)		10		17		32
Income (loss) before provision for income taxes	(1,173)		(2,656)		(7,805)		(6,958)
Accounts receivable, net	47,871		51,807		47,871		51,807
Long-lived assets, net of accumulated depreciation and amortization	5,049		4,949		5,049		4,949
Total assets	75,086		73,892		75,086		73,892
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		0		762		319
EBITDA (loss)	(3,219)	[2]	(171)	[2]	(6,890)	[2]	(1,803)	[2]
Depreciation and amortization	161		161		484		479
Intercompany interest income (expense), net	740		856		2,224		3,590
Interest income (expense), net	(96)		(103)		(306)		(299)
Income (loss) before provision for income taxes	(2,736)		421		(5,456)		1,009
Accounts receivable, net	0		0		0		0
Long-lived assets, net of accumulated depreciation and amortization	1,488		2,106		1,488		2,106
Total assets	7,735		15,496		7,735		15,496
Inter-segment elimination
Segment Reporting Information [Line Items]
Revenue, from external customers	0		0		0		0
Inter-segment revenue	(36)		(50)		(76)		(117)
Total revenue	(36)		(50)		(76)		(117)
Gross margin, from external customer	0		0		0		0
Inter-segment gross margin	0		0		(13)		(1)
Gross margin	0		0		(13)		(1)
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		0
Interest income (expense), net	0		0		0		0
Income (loss) before provision for income taxes	0		0		0		0
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.