Amount of cash outflow in the form of dividends, net of reinvested stock dividends.

No definition available.

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- Definition

Amount of cash outflow in the form of dividends on preferred stock to consolidated subsidiary.

+ References

No definition available.

+ Details

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- Details

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- Definition

The period of notice for an amendment, suspension or termination to the Dividend Reinvestment Plan prior to a designated dividend record date.

+ References

No definition available.

+ Details

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- Definition

The percentage of the purchase price per share of the entity.

+ References

No definition available.

+ Details

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- Definition

The number of registered shares of common stock pursuant to the dividend reinvestment plan.

+ References

No definition available.

+ Details

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- Definition

Per share amount for each share of common stock formerly sold.

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Details

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- Definition

Date the preferred stock has been redeemed, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

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- Definition

Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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- Definition

Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity.

+ References

+ Details

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Stockholders' Equity (Dividends) (Details) (USD $)	1 Months Ended	3 Months Ended
Stockholders' Equity (Dividends) (Details) (USD $)	Jan. 23, 2012	Mar. 31, 2015	Mar. 31, 2014
Cash Dividends [Abstract]
Cash dividends paid, net of reinvested stock dividends		$ 997,090	$ 1,276,000
Annualized dividend rate (in dollars per share)		$ 0.471	$ 0.543
Dividend Reinvestment Plan [Abstract]
Registered shares of common stock pursuant to dividend reinvestment plan (in shares)	1,500,000
Percentage of purchase price per share (in hundredths)	95.00%netr_PercentageOfPurchasePricePerShare
Former sales price per share (in dollars per share)	$ 9.5netr_SalesPricePerShareOfStock
Notice period for amendments to Dividend Reinvesment Plan		30 days
Common stock issued under dividend reinvestment plan		11,900,000
Common stock issued under dividend reinvestment plan (in shares)		12,590,000
Redeemable Convertible Series 6.3% Preferred Stock [Member]
Cash Dividends [Abstract]
Cash dividends paid		$ 26,000
Preferred Stock, Redemption Date		Aug. 31, 2014