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v2.4.1.9

Principal Components of Deferred Income Tax Asset and Liabilities (Detail) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Deferred tax assets: |  |
Accrued expenses | $ 4,409,145 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals | $ 1,534,183 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
Tax loss carry forward | 904,927 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 619,395 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Unrealized other income | 509,152 us-gaap_DeferredTaxAssetsUnrealizedLossesOnTradingSecurities | 454,370 us-gaap_DeferredTaxAssetsUnrealizedLossesOnTradingSecurities
Others | 219,705 us-gaap_DeferredTaxAssetsOther | 544 us-gaap_DeferredTaxAssetsOther
Gross deferred tax assets | 6,042,929 us-gaap_DeferredTaxAssetsGross | 2,608,492 us-gaap_DeferredTaxAssetsGross
Valuation allowance | 0 us-gaap_DeferredTaxAssetsValuationAllowance | 0 us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax assets | 6,042,929 us-gaap_DeferredTaxAssetsNet | 2,608,492 us-gaap_DeferredTaxAssetsNet
Current | 3,780,440 noah_TotalDeferredTaxAssetsNetCurrent | 1,113,723 noah_TotalDeferredTaxAssetsNetCurrent
Non-current | 2,262,489 us-gaap_DeferredTaxAssetsNetNoncurrent | 1,494,769 us-gaap_DeferredTaxAssetsNetNoncurrent
Deferred tax liabilities: |  |
Unrealized investment income | 258,386 us-gaap_DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities | 329,660 us-gaap_DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities
Total deferred tax liabilities | 258,386 us-gaap_DeferredTaxLiabilities | 329,660 us-gaap_DeferredTaxLiabilities
Current | 258,386 us-gaap_DeferredTaxLiabilitiesCurrent | 329,660 us-gaap_DeferredTaxLiabilitiesCurrent
Non-current | $ 0 us-gaap_DeferredTaxLiabilitiesNoncurrent | $ 0 us-gaap_DeferredTaxLiabilitiesNoncurrent

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Asset -URI http://asc.fasb.org/extlink&oid=6510090 + Details
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