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Segment Reporting (Detail) - Net fixed assets and net assets by geographic region (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Fixed Assets	$ 2,000	$ 2,649
Total Assets	35,441	41,115
United States [Member]
Fixed Assets	616	960
Total Assets	15,353	12,409
Canada [Member]
Fixed Assets	1,278	1,438
Total Assets	15,681	17,808
United Kingdom [Member]
Fixed Assets		95
Total Assets	1,392	8,014
Sweden [Member]
Fixed Assets	106	156
Total Assets	$ 3,015	$ 2,884

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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