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v2.4.1.9

Condensed Statements of Cash flows (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities: |  |  |
Net income attributable to Noah shareholders | $ 72,406,504 us-gaap_NetIncomeLoss | $ 51,435,171 us-gaap_NetIncomeLoss | $ 22,826,454 us-gaap_NetIncomeLoss
Adjustment to reconcile net income to net cash provided by operating activities: |  |  |
Share-based compensation | 5,298,729 us-gaap_ShareBasedCompensation | 5,245,947 us-gaap_ShareBasedCompensation | 3,998,548 us-gaap_ShareBasedCompensation
Gain from equity in subsidiaries and VIE | (2,200,504)us-gaap_IncomeLossFromEquityMethodInvestments | (1,191,833)us-gaap_IncomeLossFromEquityMethodInvestments | (617,361)us-gaap_IncomeLossFromEquityMethodInvestments
Changes in operating assets and liabilities: |  |  |
Amount due from related party | (15,107,132)us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent | (4,306,913)us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent | (2,740,357)us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent
Other current assets | (4,895,013)us-gaap_IncreaseDecreaseInOtherCurrentAssets | (1,524,067)us-gaap_IncreaseDecreaseInOtherCurrentAssets | (1,090,320)us-gaap_IncreaseDecreaseInOtherCurrentAssets
Deferred tax assets | (3,545,825)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes | 1,761,367 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes | (476,354)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Uncertain tax position liabilities | 168,465 noah_IncreaseDecreaseInLiabilityForUncertainTaxPositionsNoncurrent | 168,926 noah_IncreaseDecreaseInLiabilityForUncertainTaxPositionsNoncurrent | (156,289)noah_IncreaseDecreaseInLiabilityForUncertainTaxPositionsNoncurrent
Other current liabilities | 12,728,660 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities | 7,690,762 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities | 2,706,750 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities
Other non-current liabilities | 1,464,246 us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities | 1,483,015 us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities | 227,196 us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Net cash provided by (used in) operating activities | 95,135,759 us-gaap_NetCashProvidedByUsedInOperatingActivities | 93,969,758 us-gaap_NetCashProvidedByUsedInOperatingActivities | 29,953,666 us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows from investing activities: |  |  |
Proceeds from sale of available for sale | 7,397,738 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 4,949,984 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities |
Purchases of available for sale | (18,112,567)us-gaap_PaymentsToAcquireAvailableForSaleSecurities | (4,949,984)us-gaap_PaymentsToAcquireAvailableForSaleSecurities |
Investment in subsidiaries and VIEs | (19,568,814)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates | (8,483,375)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates | (3,198,240)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Net cash used in investing activities | (14,798,221)us-gaap_NetCashProvidedByUsedInInvestingActivities | (17,141,870)us-gaap_NetCashProvidedByUsedInInvestingActivities | (34,565,150)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities: |  |  |
Proceeds from issuance of ordinary shares upon exercise of stock options | 654,774 us-gaap_ProceedsFromIssuanceOfCommonStock | 1,130,401 us-gaap_ProceedsFromIssuanceOfCommonStock | 407,569 us-gaap_ProceedsFromIssuanceOfCommonStock
Share repurchase | (11,675,955)us-gaap_PaymentsForRepurchaseOfCommonStock |  |
Net cash (used in) provided by financing activities | 9,729,099 us-gaap_NetCashProvidedByUsedInFinancingActivities | (3,103,229)us-gaap_NetCashProvidedByUsedInFinancingActivities | (13,791,999)us-gaap_NetCashProvidedByUsedInFinancingActivities
Net increase (decrease) in cash and cash equivalents | 85,968,514 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 76,552,163 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (17,298,184)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents-beginning of the period | 196,113,315 us-gaap_CashAndCashEquivalentsAtCarryingValue | 119,561,152 us-gaap_CashAndCashEquivalentsAtCarryingValue | 136,859,336 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents-end of the period | 282,081,829 us-gaap_CashAndCashEquivalentsAtCarryingValue | 196,113,315 us-gaap_CashAndCashEquivalentsAtCarryingValue | 119,561,152 us-gaap_CashAndCashEquivalentsAtCarryingValue
Parent Company |  |  |
Cash flows from operating activities: |  |  |
Net income attributable to Noah shareholders | 72,406,504 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 51,435,171 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 22,826,454 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Adjustment to reconcile net income to net cash provided by operating activities: |  |  |
Share-based compensation | 1,643,361 us-gaap_ShareBasedCompensation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 487,435 us-gaap_ShareBasedCompensation / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Gain from equity in subsidiaries and VIE | (75,025,500)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (51,233,683)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (23,539,869)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Changes in operating assets and liabilities: |  |  |
Amount due from related party | 2,232,850 us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 929,736 us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 405,905 us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other current assets | (3,463,556)us-gaap_IncreaseDecreaseInOtherCurrentAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (309,674)us-gaap_IncreaseDecreaseInOtherCurrentAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (223,065)us-gaap_IncreaseDecreaseInOtherCurrentAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Deferred tax assets | (54,782)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (40,153)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 52,879 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Uncertain tax position liabilities | 168,464 noah_IncreaseDecreaseInLiabilityForUncertainTaxPositionsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 168,926 noah_IncreaseDecreaseInLiabilityForUncertainTaxPositionsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 169,389 noah_IncreaseDecreaseInLiabilityForUncertainTaxPositionsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other current liabilities | 494,187 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 352,432 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (419,372)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other non-current liabilities | 13,302 us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 96,942 us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (173,576)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash provided by (used in) operating activities | (1,585,170)us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,399,697 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (413,820)us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash flows from investing activities: |  |  |
Proceeds from sale of available for sale |  | 4,949,984 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Purchases of available for sale |  | (4,949,984)us-gaap_PaymentsToAcquireAvailableForSaleSecurities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Increase in amount due from subsidiaries and VIEs |  |  | (17,000,000)us-gaap_PaymentsForAdvanceToAffiliate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Investment in subsidiaries and VIEs | (12,887,042)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Net cash used in investing activities | (12,887,042)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | (17,000,000)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash flows from financing activities: |  |  |
Dividends paid |  | (7,673,585)us-gaap_PaymentsOfDividendsCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (7,856,908)us-gaap_PaymentsOfDividendsCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Proceeds from issuance of ordinary shares upon exercise of stock options | 654,774 us-gaap_ProceedsFromIssuanceOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,130,401 us-gaap_ProceedsFromIssuanceOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 407,569 us-gaap_ProceedsFromIssuanceOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Share repurchase |  | (3,155,192)us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (8,520,763)us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net cash (used in) provided by financing activities | 654,774 us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (9,698,376)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (15,970,102)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net increase (decrease) in cash and cash equivalents | (13,817,438)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (8,298,679)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (33,383,922)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash and cash equivalents-beginning of the period | 42,689,231 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 50,987,910 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 84,371,832 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash and cash equivalents-end of the period | $ 28,871,793 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 42,689,231 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 50,987,910 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

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- Definition The cash outflow from advancing money to an affiliate (an entity that is related but not strictly controlled by the entity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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