XML 94 R82.htm IDEA: XBRL DOCUMENT v2.4.1.9

Commitments - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases Disclosure [Line Items]
Rental expenses	$ 7,604,551us-gaap_OperatingLeasesRentExpenseNet	$ 7,054,682us-gaap_OperatingLeasesRentExpenseNet	$ 5,175,287us-gaap_OperatingLeasesRentExpenseNet

X

- Details

Name:	noah_LeasesDisclosureLineItems
Namespace Prefix:	noah_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

+ Details

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration