XML 52 R40.htm IDEA: XBRL DOCUMENT v2.4.0.8

Significant accounting policies - Amortization of Intangible Assets Estimated Economic Lives (Detail)	12 Months Ended
	Dec. 31, 2013
Trademark [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable Life	4 years 8 months 12 days
Database [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable Life	7 years

X

- Details

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

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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