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Consolidated Statement of Equity (USD $) | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2011 | $ 219,179,016 us-gaap_StockholdersEquity | $ 44,142 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 120,452,032 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | $ 135,726,188 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (37,043,346)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Beginning Balance (in shares) at Dec. 31, 2011 |  | 44,142,020 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Stock options exercised | 5,700 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 4 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 5,696 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Stock options exercised (in shares) |  | 3,800 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Stock-based compensation | 11,036 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  | 11,036 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Dividend distribution | (19,249,040)us-gaap_DividendsCommonStockCash |  |  |  | (19,249,040)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
LTRP shares issued |  | 5 meli_LtrpSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (5)meli_LtrpSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
LTRP shares issued (in shares) |  | 5,100 meli_LtrpSharesIssuedShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Change in redeemable amount of noncontrolling interest | 359,398 us-gaap_MinorityInterestPeriodIncreaseDecrease |  |  |  | 359,398 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Net income | 101,247,298 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  |  | 101,247,298 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Other comprehensive loss | (11,739,782)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent |  |  |  |  | (11,739,782)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance at Dec. 31, 2012 | 289,813,626 us-gaap_StockholdersEquity | 44,151 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 120,468,759 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | 218,083,844 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (48,783,128)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance (in shares) at Dec. 31, 2012 |  | 44,150,920 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Stock options exercised | 3,020 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 2 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 3,018 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Stock options exercised (in shares) |  | 2,013 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Stock-based compensation | 58,492 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  | 58,492 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Stock-based compensation (in shares) |  | 540 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Dividend distribution | (25,255,478)us-gaap_DividendsCommonStockCash |  |  |  | (25,255,478)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
LTRP shares issued | 1,031,933 meli_LtrpSharesIssued | 9 meli_LtrpSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,031,924 meli_LtrpSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
LTRP shares issued (in shares) |  | 9,003 meli_LtrpSharesIssuedShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Common Stock repurchased | (1,012,225)us-gaap_StockRepurchasedDuringPeriodValue | (9)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | (1,012,216)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Common Stock repurchased (in shares) |  | (9,003)us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Change in redeemable amount of noncontrolling interest | 9,644 us-gaap_MinorityInterestPeriodIncreaseDecrease |  |  |  | 9,644 us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Net income | 117,507,438 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  |  | 117,507,438 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Other comprehensive loss | (38,672,842)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent |  |  |  |  | (38,672,842)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance at Dec. 31, 2013 | 343,483,608 us-gaap_StockholdersEquity | 44,153 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 121,562,193 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (1,012,216)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 310,345,448 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (87,455,970)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance (in shares) at Dec. 31, 2013 |  | 44,153,473 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Stock-based compensation | 117,783 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 1 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 117,782 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Stock-based compensation (in shares) |  | 1,099 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Dividend distribution | (29,318,184)us-gaap_DividendsCommonStockCash |  |  |  | (29,318,184)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
LTRP shares issued | 1,930,119 meli_LtrpSharesIssued |  | 1,930,119 meli_LtrpSharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
LTRP shares issued (in shares) |  | 20,749 meli_LtrpSharesIssuedShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Common Stock repurchased | (1,943,684)us-gaap_StockRepurchasedDuringPeriodValue |  | (2,955,900)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 1,012,216 us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |
Common Stock repurchased (in shares) |  | (20,749)us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Convertible Notes - Equity component | 29,774,995 us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature |  | 29,774,995 us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Capped call | (12,784,200)meli_CappedCallTransactionCost |  | (12,784,200)meli_CappedCallTransactionCost / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Change in redeemable amount of noncontrolling interest | (434,717)us-gaap_MinorityInterestPeriodIncreaseDecrease |  |  |  | (434,717)us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Net income | 72,580,551 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  |  | 72,580,551 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |
Other comprehensive loss | (47,617,861)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent |  |  |  |  | (47,617,861)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance at Dec. 31, 2014 | $ 355,788,410 us-gaap_StockholdersEquity | $ 44,154 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 137,644,989 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  | $ 353,173,098 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (135,073,831)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance (in shares) at Dec. 31, 2014 |  | 44,154,572 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |

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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + 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 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration