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Business and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2012
Office equipment and furniture and fixtures | Minimum
Fixed Assets
Estimated useful life	3 years
Office equipment and furniture and fixtures | Maximum
Fixed Assets
Estimated useful life	10 years
Computer software | Maximum
Fixed Assets
Estimated useful life	3 years
Building
Fixed Assets
Estimated useful life	39 years

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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.

+ References

No definition available.

+ Details

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