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Cash Dividend Distribution (Additional Information) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended	1 Months Ended				3 Months Ended		12 Months Ended
	Feb. 24, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Feb. 28, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Dividends Payable [Line Items]
Cash dividend distribution	$ 4,548meli_CashDividendDistribution	$ 7,330meli_CashDividendDistribution	$ 7,330meli_CashDividendDistribution	$ 7,330meli_CashDividendDistribution	$ 7,330meli_CashDividendDistribution			$ 29,318meli_CashDividendDistribution
Cash dividend distribution, per share	$ 0.103us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.166us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.166us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.166us-gaap_CommonStockDividendsPerShareCashPaid	$ 0.166us-gaap_CommonStockDividendsPerShareCashPaid			$ 0.664us-gaap_CommonStockDividendsPerShareCashPaid
Cash dividend declared, per share						$ 0.103us-gaap_CommonStockDividendsPerShareDeclared	$ 0.166us-gaap_CommonStockDividendsPerShareDeclared
First Quarter Previous Year [Member]
Dividends Payable [Line Items]
Dividend payable date						Apr. 15, 2015
Dividends payment, date of record						Mar. 29, 2015
Second Quarter Previous Year [Member]
Dividends Payable [Line Items]
Dividend payable date						Jul. 15, 2015
Dividends payment, date of record						Jun. 30, 2015
Third Quarter Previous Year [Member]
Dividends Payable [Line Items]
Dividend payable date						Oct. 15, 2014
Dividends payment, date of record						Sep. 30, 2015
Fourth Quarter Previous Year [Member]
Dividends Payable [Line Items]
Dividend payable date						Jan. 15, 2015
Dividends payment, date of record						Dec. 31, 2014
Fourth Quarter [Member]
Dividends Payable [Line Items]
Dividend payable date						Jan. 15, 2015
Dividends payment, date of record						Dec. 31, 2014
First Quarter [Member]
Dividends Payable [Line Items]
Dividend payable date						Apr. 15, 2015
Dividends payment, date of record						Mar. 31, 2015

X

- Definition

Cash dividend distribution.

+ References

No definition available.

+ Details

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X

- 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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- Definition

Aggregate dividends declared 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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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

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+ References

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