FAIR VALUE OF CERTAIN FINANCIAL ASSETS AND LIABILITIES (Details 2) (USD $) In Thousands, unless otherwise specified
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12 Months Ended |
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Fair value amounts included in the carrying value of |
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Cash and cash equivalents |
$ 370,323us-gaap_CashAndCashEquivalentsAtCarryingValue |
$ 211,349us-gaap_CashAndCashEquivalentsAtCarryingValue |
$ 222,514us-gaap_CashAndCashEquivalentsAtCarryingValue |
$ 359,331us-gaap_CashAndCashEquivalentsAtCarryingValue |
Short-term investments |
781,134us-gaap_ShortTermInvestments |
402,247us-gaap_ShortTermInvestments |
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Investments |
42,940us-gaap_LongTermInvestments |
9,792us-gaap_LongTermInvestments |
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Asset transfers between Level 1 and Level 2 measurements |
0mnst_FairValueAssetTransfersBetweenLevel1AndLevel2 |
0mnst_FairValueAssetTransfersBetweenLevel1AndLevel2 |
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Level 1 |
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Fair value amounts included in the carrying value of |
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Cash and cash equivalents |
303,018us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel1Member |
199,402us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel1Member |
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Total |
303,018us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel1Member |
199,402us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel1Member |
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Level 2 |
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Fair value amounts included in the carrying value of |
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Cash and cash equivalents |
67,305us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
11,947us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
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Short-term investments |
777,224us-gaap_ShortTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
395,855us-gaap_ShortTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
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Accounts receivable, net |
83us-gaap_AccountsReceivableFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
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Investments |
42,940us-gaap_LongTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
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Accrued liabilities |
(335)us-gaap_AccruedLiabilitiesFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
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Total |
887,217us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
407,802us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel2Member |
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Level 3 |
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Fair value amounts included in the carrying value of |
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Short-term investments |
3,910us-gaap_ShortTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
6,392us-gaap_ShortTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
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Investments |
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9,792us-gaap_LongTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
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Prepaid expenses and other current assets |
250mnst_PrepaidExpenseAndOtherCurrentAssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
486mnst_PrepaidExpenseAndOtherCurrentAssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
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Other assets |
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606us-gaap_OtherAssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
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Total |
4,160us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
17,276us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueInputsLevel3Member |
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Total fair value |
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Fair value amounts included in the carrying value of |
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Cash and cash equivalents |
370,323us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
211,349us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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Short-term investments |
781,134us-gaap_ShortTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
402,247us-gaap_ShortTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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Accounts receivable, net |
83us-gaap_AccountsReceivableFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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Investments |
42,940us-gaap_LongTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
9,792us-gaap_LongTermInvestments / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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Prepaid expenses and other current assets |
250mnst_PrepaidExpenseAndOtherCurrentAssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
486mnst_PrepaidExpenseAndOtherCurrentAssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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Other assets |
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606us-gaap_OtherAssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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Accrued liabilities |
(335)us-gaap_AccruedLiabilitiesFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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Total |
$ 1,194,395us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
$ 624,480us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember |
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