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Note 2. Schedule of estimated useful lives for property and equipment (Details) | 12 Months Ended
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Dec. 31, 2012
Furniture, fixtures and equipment |
Depreciation / Amortization Period | 3 to 5 years
Computer equipment and purchased software |
Depreciation / Amortization Period | 3 years
Machinery and equipment |
Depreciation / Amortization Period | 3 to 5 years
Leasehold Improvements |
Depreciation / Amortization Period | 7 years or lesser of the lease term

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 + Details
Name: | us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration