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Related Party Transactions - Additional Information (Detail)
Nov. 01, 2014
Related Party Transaction [Line Items]  
Percentage of ownership interest 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
TLT Incorporation [Member]  
Related Party Transaction [Line Items]  
Percentage of ownership interest 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= nobh_TltIncorporationMember
Walden Woods [Member]  
Related Party Transaction [Line Items]  
Percentage of ownership interest 31.30%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= nobh_WaldenWoodsSouthLlcMember
Walden Woods [Member] | Majority Shareholder [Member]  
Related Party Transaction [Line Items]  
Percentage of ownership interest 51.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= nobh_WaldenWoodsSouthLlcMember
President [Member] | TLT Incorporation [Member] | Minimum Range [Member]  
Related Party Transaction [Line Items]  
Percentage of ownership interest 24.75%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= nobh_TltIncorporationMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_PresidentMember
President [Member] | TLT Incorporation [Member] | Maximum Range [Member]  
Related Party Transaction [Line Items]  
Percentage of ownership interest 49.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= nobh_TltIncorporationMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_PresidentMember
Executive Vice President [Member] | TLT Incorporation [Member] | Minimum Range [Member]  
Related Party Transaction [Line Items]  
Percentage of ownership interest 49.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= nobh_TltIncorporationMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember
Executive Vice President [Member] | TLT Incorporation [Member] | Maximum Range [Member]  
Related Party Transaction [Line Items]  
Percentage of ownership interest 57.75%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= nobh_TltIncorporationMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveVicePresidentMember