Significant Accounting Policies (Details)	12 Months Ended
Dec. 31, 2011
Shop and office equipment \| Minimum
Medical Equipment and Property and Office Equipment
Estimated useful life	3 years
Shop and office equipment \| Maximum
Medical Equipment and Property and Office Equipment
Estimated useful life	10 years
Medical Equipment \| Minimum
Medical Equipment and Property and Office Equipment
Estimated useful life	4 years
Medical Equipment \| Maximum
Medical Equipment and Property and Office Equipment
Estimated useful life	7 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration