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MORTGAGE NOTES PAYABLE (Details) (USD $)
 12 Months Ended 76 Months Ended 88 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2014
Jul. 15, 2013
Dec. 20, 2013
Jun. 11, 2014
Oct. 02, 2013
Feb. 25, 2013
Mar. 11, 2013
Jul. 07, 2013
Feb. 28, 2014
Jul. 11, 2014
Jul. 31, 2014
MORTGAGE NOTES PAYABLE                                
Effective interest rate (as a percent) 5.33%us-gaap_DebtInstrumentInterestRateEffectivePercentage       5.33%us-gaap_DebtInstrumentInterestRateEffectivePercentage 5.33%us-gaap_DebtInstrumentInterestRateEffectivePercentage                    
Annual maturities of mortgage debt                                
2015-current maturities $ 135,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths       $ 135,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths $ 135,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths                    
2016 1,183,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo       1,183,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo 1,183,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo                    
2017 1,782,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree       1,782,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree 1,782,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree                    
2018 7,860,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour       7,860,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour 7,860,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour                    
2019 1,942,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive       1,942,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive 1,942,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive                    
Thereafter 183,170,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive       183,170,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive 183,170,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive                    
Total 196,072,000us-gaap_LongTermDebt       196,072,000us-gaap_LongTermDebt 196,072,000us-gaap_LongTermDebt                    
Additional disclosures related to mortgages                                
Repurchase price of depository receipts $ 47.90nen_PartnersCapitalAccountDepositoryReceiptsTreasuryAverageRepurchasePricePerDepositoryReceipt $ 37.80nen_PartnersCapitalAccountDepositoryReceiptsTreasuryAverageRepurchasePricePerDepositoryReceipt     $ 25.65nen_PartnersCapitalAccountDepositoryReceiptsTreasuryAverageRepurchasePricePerDepositoryReceipt                      
Repurchase price of units $ 1,437nen_PartnersCapitalAccountUnitsTreasuryAverageRepurchasePricePerUnit $ 1,134nen_PartnersCapitalAccountUnitsTreasuryAverageRepurchasePricePerUnit                            
Repurchase of depository receipts 44,025nen_PartnersCapitalAccountDepositoryReceiptsTreasury 22,964nen_PartnersCapitalAccountDepositoryReceiptsTreasury   1,286,916nen_PartnersCapitalAccountDepositoryReceiptsTreasury   1,286,916nen_PartnersCapitalAccountDepositoryReceiptsTreasury                    
Total cost of repurchase 2,685,583us-gaap_PartnersCapitalAccountTreasuryUnitsPurchases 1,094,609us-gaap_PartnersCapitalAccountTreasuryUnitsPurchases 906,214us-gaap_PartnersCapitalAccountTreasuryUnitsPurchases   35,167,000us-gaap_PartnersCapitalAccountTreasuryUnitsPurchases                      
Line of Credit                                
Additional disclosures related to mortgages                                
Commitment fee 12,000us-gaap_LineOfCreditFacilityCommitmentFeeAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_LineOfCreditMember		                              
Hamilton Green                                
Additional disclosures related to mortgages                                
Closing costs associated with financing             38,000nen_FinancingCosts
/ dei_LegalEntityAxis
= nen_HamiltonGreenApartmentsLLCMember		                  
Mortgages payable                                
MORTGAGE NOTES PAYABLE                                
Amount of monthly installments including principal 808,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                              
Weighted average interest rate (as a percent) 4.81%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		       4.81%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		 4.81%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                    
Effective interest rate (as a percent) 4.91%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		       4.91%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		 4.91%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                    
Mortgages payable | Hamilton Green                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent)               4.67%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= nen_HamiltonGreenApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                
Additional disclosures related to mortgages                                
Amount of mortgage paid off               40,000,000us-gaap_RepaymentsOfDebt
/ dei_LegalEntityAxis
= nen_HamiltonGreenApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                
Period of interest only payments on loans               2 years                
Term of debt               15 years                
Period for which the entity is required to make interest only payments               2 years                
Amortization period of debt               30 years                
Amount of loan proceeds utilized for pay off the existing mortgage               1,846,000nen_DebtInstrumentLoanProceedsUtilizedToPayOffExistingMortgage
/ dei_LegalEntityAxis
= nen_HamiltonGreenApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                
Closing costs associated with financing               346,000nen_FinancingCosts
/ dei_LegalEntityAxis
= nen_HamiltonGreenApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                
Amount of new loan               38,500,000us-gaap_DebtInstrumentFaceAmount
/ dei_LegalEntityAxis
= nen_HamiltonGreenApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		                
Mortgages payable | NERA Dean Street Associates, LLC                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent)                 4.22%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= nen_NERADeanStreetAssociatesLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		              
Additional disclosures related to mortgages                                
Amount of new loan                 5,687,000us-gaap_ProceedsFromIssuanceOfDebt
/ dei_LegalEntityAxis
= nen_NERADeanStreetAssociatesLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		              
Period of interest only payments on loans                 10 years              
Amount of loan proceeds utilized for pay off the existing mortgage                 5,077,000nen_DebtInstrumentLoanProceedsUtilizedToPayOffExistingMortgage
/ dei_LegalEntityAxis
= nen_NERADeanStreetAssociatesLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		              
Refinancing cost                 89,000us-gaap_DebtIssuanceCosts
/ dei_LegalEntityAxis
= nen_NERADeanStreetAssociatesLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		              
Mortgages payable | Westgate Apartments LLC                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent)                   4.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CounterpartyNameAxis
= nen_WestgateApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		            
Additional disclosures related to mortgages                                
Amount of new loan                   15,700,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_CounterpartyNameAxis
= nen_WestgateApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		            
Term of debt                   10 years            
Amount of loan proceeds utilized for pay off the existing mortgage                   7,616,000nen_DebtInstrumentLoanProceedsUtilizedToPayOffExistingMortgage
/ us-gaap_CounterpartyNameAxis
= nen_WestgateApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		            
Closing costs associated with financing                   190,000nen_FinancingCosts
/ us-gaap_CounterpartyNameAxis
= nen_WestgateApartmentsLLCMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember		            
Mortgages payable | Hamilton Cypress LLC Commercial-1031Exchange Brookline, Massachusetts                                
Additional disclosures related to mortgages                                
Amount of mortgage paid off                     3,967,000us-gaap_RepaymentsOfDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_HamiltonCypressLLCCommercial1031ExchangeBrooklineMassachusettsMember		          
Mortgage prepayment penalties                     0us-gaap_PaymentsOfDebtExtinguishmentCosts
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_HamiltonCypressLLCCommercial1031ExchangeBrooklineMassachusettsMember		          
Mortgages payable | Property located at School Street                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent)                       3.76%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_PropertyLocatedAtSchoolStreetMember		        
Additional disclosures related to mortgages                                
Amount of new loan                       15,000,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_PropertyLocatedAtSchoolStreetMember		        
Period for which the entity is required to make interest only payments                       3 years        
Amortization period of debt                       30 years        
Amount of loan proceeds utilized for pay off the existing mortgage                       15,284,000nen_DebtInstrumentLoanProceedsUtilizedToPayOffExistingMortgage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_PropertyLocatedAtSchoolStreetMember		        
Deferred financing cost associated with mortgage                       159,000us-gaap_DeferredFinanceCostsNet
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_PropertyLocatedAtSchoolStreetMember		        
Mortgages payable | Boylston Downtown L.P. Residential Apartments Boston, Massachusetts                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent)                         3.97%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_BoylstonDowntownLPResidentialApartmentsBostonMassachusettsMember		      
Additional disclosures related to mortgages                                
Amount of new loan                         40,000,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_BoylstonDowntownLPResidentialApartmentsBostonMassachusettsMember		      
Period of interest only payments on loans                         3 years      
Term of debt                         15 years      
Amortization period of debt                         30 years      
Amount of loan proceeds utilized for pay off the existing mortgage                         19,500,000nen_DebtInstrumentLoanProceedsUtilizedToPayOffExistingMortgage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_BoylstonDowntownLPResidentialApartmentsBostonMassachusettsMember		      
Net proceed from the loan - cash back                         20,000,000nen_ProceedsFromLoan
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_BoylstonDowntownLPResidentialApartmentsBostonMassachusettsMember		      
Refinancing cost                         279,000us-gaap_DebtIssuanceCosts
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_BoylstonDowntownLPResidentialApartmentsBostonMassachusettsMember		      
Mortgages payable | Hamilton Linewt LLC Commercial-1031Exchange Newton, Massachusetts                                
Additional disclosures related to mortgages                                
Amount of mortgage paid off                           1,466,000us-gaap_RepaymentsOfDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_HamiltonLinewtLLCCommercial1031ExchangeNewtonMassachusettsMember		    
Mortgages payable | Linhart L.P. Residential/Commercial Newton, Massachusetts                                
Additional disclosures related to mortgages                                
Amount of mortgage paid off                           1,926,000us-gaap_RepaymentsOfDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_LinhartLPResidentialCommercialNewtonMassachusettsMember		    
Mortgages payable | Courtyard At Westgate Residential Units Burlington Massachusetts Member                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent)                             4.31%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_CourtyardAtWestgateResidentialUnitsBurlingtonMassachusettsMember		  
Additional disclosures related to mortgages                                
Amount of new loan                             2,500,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_CourtyardAtWestgateResidentialUnitsBurlingtonMassachusettsMember		  
Period of interest only payments on loans                             10 years  
Amount of loan proceeds utilized for pay off the existing mortgage                             2,010,000nen_DebtInstrumentLoanProceedsUtilizedToPayOffExistingMortgage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_CourtyardAtWestgateResidentialUnitsBurlingtonMassachusettsMember		  
Refinancing cost                             75,000us-gaap_DebtIssuanceCosts
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= nen_CourtyardAtWestgateResidentialUnitsBurlingtonMassachusettsMember		  
Mortgages payable | Minimum                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent) 3.76%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		       3.76%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 3.76%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		                    
Mortgages payable | Maximum                                
MORTGAGE NOTES PAYABLE                                
Interest rate (as a percent) 5.97%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		       5.97%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		 5.97%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MortgagesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		                    
Line of Credit                                
Additional disclosures related to mortgages                                
Term of debt                               3 years
Maximum borrowings                               25,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Deferred financing cost associated with mortgage                               141,000us-gaap_DeferredFinanceCostsNet
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Number of properties in which borrowing amount collateralized                               23us-gaap_NumberOfRealEstateProperties
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Funds drawn by the company $ 0nen_Nen_FundsDrawnByEntity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember		       $ 0nen_Nen_FundsDrawnByEntity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember		 $ 0nen_Nen_FundsDrawnByEntity
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember		                    
Line of Credit | Prime Rate [Member]                                
Additional disclosures related to mortgages                                
Reference rate used in calculation of Base Rate                               Prime
Line of Credit | Federal Funds Rate [Member]                                
Additional disclosures related to mortgages                                
Reference rate used in calculation of Base Rate                               Federal Funds
Basis of effective interest rate used in calculation of Base Rate (as a percent)                               0.50%nen_Nen_DebtInstrumentBasisSpreadOnVariableRateUsedForCalculationOfBaseRate
/ us-gaap_LongtermDebtTypeAxis
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/ us-gaap_VariableRateAxis
= nen_Nen_FederalFundsRateMember
Line of Credit | London Interbank Offered Rate (LIBOR) [Member]                                
Additional disclosures related to mortgages                                
Reference rate used in calculation of Base Rate                               one month LIBOR
Basis of effective interest rate used in calculation of Base Rate (as a percent)                               1.00%nen_Nen_DebtInstrumentBasisSpreadOnVariableRateUsedForCalculationOfBaseRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
Line of Credit | Minimum                                
Additional disclosures related to mortgages                                
Pledged interests rate of the Partnership's ownership interest (as a percent)                               49.00%nen_Nen_PledgedInterestsRatePercentageOfPartnershipOwnershipInterest
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Commitment fee for unused amount (as a percent)                               0.15%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Line of Credit | Minimum | Base Rate [Member]                                
Additional disclosures related to mortgages                                
Debt Instrument, Basis Spread on Variable Rate                               2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
Line of Credit | Maximum                                
Additional disclosures related to mortgages                                
Pledged interests rate of the Partnership's ownership interest (as a percent)                               100.00%nen_Nen_PledgedInterestsRatePercentageOfPartnershipOwnershipInterest
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Commitment fee for unused amount (as a percent)                               0.20%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Line of Credit | Maximum | Base Rate [Member]                                
Additional disclosures related to mortgages                                
Debt Instrument, Basis Spread on Variable Rate                               3.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember