CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash Flows from Operating Activities
Net income (loss)	$ 409,658us-gaap_NetIncomeLoss	$ (29,614)us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	2,484,294	2,724,180
(Income) Loss from investments in joint ventures	(125,234)	208,252
Change in operating assets and liabilities
(Increase) in rents receivable	(25,776)	(6,140)
(Decrease) in accounts payable and accrued expense	(414,728)	(506,471)
(Increase) Decrease in real estate tax escrow	(3,144)nen_IncreaseDecreaseInEscrowDeposit	85,858nen_IncreaseDecreaseInEscrowDeposit
Decrease (Increase) in prepaid expenses and other assets	1,994	(478,430)
Increase in advance rental payments and security deposits	40,742	55,810
Total Adjustments	1,958,148	2,083,059
Net cash provided by operating activities	2,367,806	2,053,445
Cash Flows From Investing Activities
Proceeds from unconsolidated joint ventures	653,843	273,083
Distribution in excess of investment in unconsolidated joint ventures	82,500	100,000
(Investment in) unconsolidated joint ventures	(8,843)	(108,083)
Improvement of rental properties	(872,165)	(548,564)
Net cash (used in) investing activities	(144,665)	(283,564)
Cash Flows from Financing Activities
Principal payments and payoffs of mortgage notes payable	(32,898)us-gaap_RepaymentsOfSecuredDebt	(3,447,120)us-gaap_RepaymentsOfSecuredDebt
Stock buyback	(1,218,440)us-gaap_PaymentsForRepurchaseOfEquity	(379,409)us-gaap_PaymentsForRepurchaseOfEquity
Distributions to partners	(951,330)	(969,207)
Net cash (used in) financing activities	(2,202,668)	(4,795,736)
Net Increase (Decrease) in Cash and Cash Equivalents	20,473	(3,025,855)
Cash and Cash Equivalents, at beginning of period	14,015,898	14,013,380
Cash and Cash Equivalents, at end of period	$ 14,036,371	$ 10,987,525

This element represents the net change during the reporting period in amount of real estate tax escrow.

No definition available.

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The sum of adjustments which are added to or deducted from net income or loss, including the portion attributable to noncontrolling interest, to reflect cash provided by or used in operating activities, in accordance with the indirect cash flow method.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount of cash distribution paid to unit-holder of limited partnership (LP).

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

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The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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The increase (decrease) during the reporting period in the amount of (a) prepayments by customers for goods or services to be provided at a later date, (b) the amount of customer money held in customer accounts, including security deposits, collateral for a current or future transactions, initial payment of the cost of acquisition or for the right to enter into a contract or agreement, or (c) a combination of (a) and (b).

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The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The cash outflow to reacquire common and preferred stock.

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The cash outflow from the acquisition of a piece of land and anything permanently fixed to it, including buildings, structures on it and so forth, and payments to develop real estate assets by adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements. Including real estate intended to generate income for the owner; excluding real estate acquired for use by the owner.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Cash dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations that are returns of capital. Excludes dividends or distributions from equity method investments classified as operating activities.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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