SEGMENT AND GEOGRAPHIC DATA Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 segments		Mar. 31, 2013		Dec. 31, 2013
Segment Reporting Information [Line Items]
Number of Reportable Segments	3
Revenue, from external customers	$ 161,861		$ 165,678
Inter-segment revenue	0		0
Total revenue	161,861	[1]	165,678	[1]
Gross margin, from external customer	57,529		56,677
Inter-segment gross margin	0		0
Gross margin	57,529		56,677
Business reorganization expenses (recovery)	114		1,982
EBITDA (loss)	(2,388)	[2]	(6,624)	[2]
Depreciation and amortization	1,488		1,648
Intercompany interest income (expense), net	0		0
Interest income (expense), net	(144)		(146)
Income (loss) before provision for income taxes	(4,020)		(8,418)
Accounts receivable, net	99,335		103,023		85,901
Long-lived assets, net of accumulated depreciation and amortization	16,101	[3]	20,993	[3]
Total assets	159,499		182,452		158,829
Hudson Americas
Segment Reporting Information [Line Items]
Revenue, from external customers	26,863		37,223
Inter-segment revenue	0		(2)
Total revenue	26,863		37,221
Gross margin, from external customer	6,666		8,144
Inter-segment gross margin	(3)		(2)
Gross margin	6,663		8,142
Business reorganization expenses (recovery)	91		(17)
EBITDA (loss)	(1,110)	[2]	(947)	[2]
Depreciation and amortization	225		252
Intercompany interest income (expense), net	0		0
Interest income (expense), net	(7)		(9)
Income (loss) before provision for income taxes	(1,342)		(1,208)
Accounts receivable, net	16,427		23,442
Long-lived assets, net of accumulated depreciation and amortization	1,492		2,100
Total assets	19,688		28,443
Hudson Asia Pacific
Segment Reporting Information [Line Items]
Revenue, from external customers	56,430		56,201
Inter-segment revenue	0		(1)
Total revenue	56,430		56,200
Gross margin, from external customer	20,911		21,492
Inter-segment gross margin	(70)		(25)
Gross margin	20,841		21,467
Business reorganization expenses (recovery)	0		102
EBITDA (loss)	(305)	[2]	(867)	[2]
Depreciation and amortization	745		830
Intercompany interest income (expense), net	0		(665)
Interest income (expense), net	(42)		(42)
Income (loss) before provision for income taxes	(1,092)		(2,404)
Accounts receivable, net	31,258		31,627
Long-lived assets, net of accumulated depreciation and amortization	9,550		12,380
Total assets	58,223		69,140
Hudson Europe
Segment Reporting Information [Line Items]
Revenue, from external customers	78,568		72,254
Inter-segment revenue	79		25
Total revenue	78,647		72,279
Gross margin, from external customer	29,952		27,041
Inter-segment gross margin	73		26
Gross margin	30,025		27,067
Business reorganization expenses (recovery)	23		1,871
EBITDA (loss)	1,153	[2]	(3,452)	[2]
Depreciation and amortization	357		405
Intercompany interest income (expense), net	(130)		(106)
Interest income (expense), net	11		6
Income (loss) before provision for income taxes	677		(3,957)
Accounts receivable, net	51,650		47,954
Long-lived assets, net of accumulated depreciation and amortization	3,526		4,703
Total assets	76,718		75,216
Corporate
Segment Reporting Information [Line Items]
Revenue, from external customers	0		0
Inter-segment revenue	0		0
Total revenue	0		0
Gross margin, from external customer	0		0
Inter-segment gross margin	0		0
Gross margin	0		0
Business reorganization expenses (recovery)	0		26
EBITDA (loss)	(2,126)	[2]	(1,358)	[2]
Depreciation and amortization	161		161
Intercompany interest income (expense), net	130		771
Interest income (expense), net	(106)		(101)
Income (loss) before provision for income taxes	(2,263)		(849)
Accounts receivable, net	0		0
Long-lived assets, net of accumulated depreciation and amortization	1,533		1,810
Total assets	4,870		9,653
Inter-segment elimination
Segment Reporting Information [Line Items]
Revenue, from external customers	0		0
Inter-segment revenue	(79)		(22)
Total revenue	(79)		(22)
Gross margin, from external customer	0		0
Inter-segment gross margin	0		1
Gross margin	0		1
Business reorganization expenses (recovery)	0		0
EBITDA (loss)	0	[2]	0	[2]
Depreciation and amortization	0		0
Intercompany interest income (expense), net	0		0
Interest income (expense), net	0		0
Income (loss) before provision for income taxes	0		0
Accounts receivable, net	0		0
Long-lived assets, net of accumulated depreciation and amortization	0		0
Total assets	$ 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.