SEGMENT AND GEOGRAPHIC DATA Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 Segment		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Number of reportable segments											3
Revenue, from external customers											$ 660,128		$ 777,577		$ 933,736
Revenue from Related Parties											0		0		0
Total revenue	159,503		163,587	171,360	165,678	184,276		187,873	204,838	200,590	660,128	[1]	777,577	[1]	933,736	[1]
Gross margin, from external customers											229,872		284,867		354,305
Inter-segment gross margin											0		0		0
Gross margin	56,895		55,796	60,504	56,677	66,925		67,666	77,068	73,208	229,872		284,867		354,305
Business reorganization expenses (recovery)											6,721		7,782		720
Impairment of long-lived assets											1,336		0		0
EBITDA (loss) (a)											(19,600)	[2]	54	[2]	23,642	[2]
Depreciation and amortization											6,406		6,438		6,251
Intercompany interest income (expense), net											0		0		0
Interest income (expense), net											(596)		(635)		(1,143)
Income (loss) from continuing operations before provision for income taxes											(26,602)		(7,019)		16,248
Provision for (benefit from) income taxes											3,793		(1,684)		5,339
Accounts receivable, net	85,901					107,216					85,901		107,216		131,489
Long-lived assets, net of accumulated depreciation and amortization	15,873	[3]				22,158	[3]				15,873	[3]	22,158	[3]	20,029	[3]
Total assets	158,829					193,468					158,829		193,468		216,546
Hudson Americas
Segment Reporting Information [Line Items]
Revenue, from external customers											139,003		169,216		192,217
Revenue from Related Parties											(2)		0		20
Total revenue											139,001		169,216		192,237
Gross margin, from external customers											34,243		43,164		50,778
Inter-segment gross margin											(4)		(13)		(1)
Gross margin											34,239		43,151		50,777
Business reorganization expenses (recovery)											1,297		1,007		0
Impairment of long-lived assets											0		0		0
EBITDA (loss) (a)											(268)	[2]	1,268	[2]	3,482	[2]
Depreciation and amortization											976		1,097		1,092
Intercompany interest income (expense), net											0		0		0
Interest income (expense), net											(23)		(57)		(42)
Income (loss) from continuing operations before provision for income taxes											(1,267)		114		2,348
Provision for (benefit from) income taxes											171		(3,061)		500
Accounts receivable, net	14,534					26,168					14,534		26,168		24,750
Long-lived assets, net of accumulated depreciation and amortization	1,509					2,230					1,509		2,230		2,557
Total assets	18,338					31,399					18,338		31,399		29,818
Hudson Asia Pacific
Segment Reporting Information [Line Items]
Revenue, from external customers											232,748		288,144		359,108
Revenue from Related Parties											0		91		39
Total revenue											232,748		288,235		359,147
Gross margin, from external customers											87,161		117,428		146,917
Inter-segment gross margin											(70)		12		(83)
Gross margin											87,091		117,440		146,834
Business reorganization expenses (recovery)											989		1,285		0
Impairment of long-lived assets											257		0		0
EBITDA (loss) (a)											(3,227)	[2]	5,355	[2]	14,180	[2]
Depreciation and amortization											3,192		3,197		2,922
Intercompany interest income (expense), net											(1,254)		(3,988)		(7,339)
Interest income (expense), net											(183)		(236)		(659)
Income (loss) from continuing operations before provision for income taxes											(7,856)		(2,066)		3,260
Provision for (benefit from) income taxes											3,489		(527)		900
Accounts receivable, net	24,647					32,835					24,647		32,835		49,918
Long-lived assets, net of accumulated depreciation and amortization	9,179					12,909					9,179		12,909		9,997
Total assets	55,234					72,517					55,234		72,517		81,161
Hudson Europe
Segment Reporting Information [Line Items]
Revenue, from external customers											288,377		320,217		382,411
Revenue from Related Parties											107		88		135
Total revenue											288,484		320,305		382,546
Gross margin, from external customers											108,468		124,275		156,610
Inter-segment gross margin											86		1		107
Gross margin											108,554		124,276		156,717
Business reorganization expenses (recovery)											3,646		5,131		720
Impairment of long-lived assets											1,079		0		0
EBITDA (loss) (a)											(8,772)	[2]	(2,955)	[2]	8,071	[2]
Depreciation and amortization											1,594		1,503		1,642
Intercompany interest income (expense), net											(532)		(435)		(523)
Interest income (expense), net											23		51		55
Income (loss) from continuing operations before provision for income taxes											(10,875)		(4,842)		5,961
Provision for (benefit from) income taxes											5		1,486		3,214
Accounts receivable, net	46,720					48,213					46,720		48,213		56,821
Long-lived assets, net of accumulated depreciation and amortization	3,492					5,048					3,492		5,048		4,939
Total assets	74,877					76,381					74,877		76,381		86,156
Corporate
Segment Reporting Information [Line Items]
Revenue, from external customers											0		0		0
Revenue from Related Parties											0		0		0
Total revenue											0		0		0
Gross margin, from external customers											0		0		0
Inter-segment gross margin											0		0		0
Gross margin											0		0		0
Business reorganization expenses (recovery)											789		359		0
Impairment of long-lived assets											0		0		0
EBITDA (loss) (a)											(7,333)	[2]	(3,614)	[2]	(2,091)	[2]
Depreciation and amortization											644		641		595
Intercompany interest income (expense), net											1,786		4,423		7,864
Interest income (expense), net											(413)		(393)		(497)
Income (loss) from continuing operations before provision for income taxes											(6,604)		(225)		4,681
Provision for (benefit from) income taxes											128		418		725
Accounts receivable, net	0					0					0		0		0
Long-lived assets, net of accumulated depreciation and amortization	1,693					1,971					1,693		1,971		2,536
Total assets	10,380					13,171					10,380		13,171		19,411
Inter- segment elimination
Segment Reporting Information [Line Items]
Revenue, from external customers											0		0		0
Revenue from Related Parties											(105)		(179)		(194)
Total revenue											(105)		(179)		(194)
Gross margin, from external customers											0		0		0
Inter-segment gross margin											(12)		0		(23)
Gross margin											(12)		0		(23)
Business reorganization expenses (recovery)											0		0		0
Impairment of long-lived assets											0		0		0
EBITDA (loss) (a)											0	[2]	0	[2]	0	[2]
Depreciation and amortization											0		0		0
Intercompany interest income (expense), net											0		0		(2)
Interest income (expense), net											0		0		0
Income (loss) from continuing operations before provision for income taxes											0		0		(2)
Provision for (benefit from) income taxes											0				0
Accounts receivable, net	0					0					0		0		0
Long-lived assets, net of accumulated depreciation and amortization	0					0					0		0		0
Total assets	$ 0					$ 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 goodwill. Corporate assets are included in the United States.