XML 42 R47.htm IDEA: XBRL DOCUMENT v2.4.0.6

Property and Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Leasehold improvements	Lesser of useful life of improvement or remaining term of lease
Computer and office equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant & equipment useful lives	3 years
Computer and office equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant & equipment useful lives	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant & equipment useful lives	7 years
Vehicles and other | Minimum
Property, Plant and Equipment [Line Items]
Property, plant & equipment useful lives	4 years
Vehicles and other | Maximum
Property, Plant and Equipment [Line Items]
Property, plant & equipment useful lives	5 years
Buildings
Property, Plant and Equipment [Line Items]
Property, plant & equipment useful lives	30 years

X

- 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

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
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