XML 93 R66.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

INVESTMENTS - Maturity Period (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Investments |  |
Amortized Cost | $ 545,771 | $ 320,740
Fair Value | 545,968 | 320,650
Commercial paper | Less than 1 year |  |
Investments |  |
Amortized Cost | 83,478 | 52,838
Fair Value | 83,478 | 52,838
Municipal securities | Less than 1 year |  |
Investments |  |
Amortized Cost | 147,983 | 151,690
Fair Value | 148,108 | 151,644
Municipal securities | Due 1 - 10 years |  |
Investments |  |
Amortized Cost | 1,562 |
Fair Value | 1,561 |
U.S. government agency securities | Less than 1 year |  |
Investments |  |
Amortized Cost | 40,620 | 19,943
Fair Value | 40,590 | 19,931
U.S. government agency securities | Due 1 - 10 years |  |
Investments |  |
Amortized Cost | 5,267 |
Fair Value | 5,266 |
Certificates of deposit | Less than 1 year |  |
Investments |  |
Amortized Cost | 28,049 | 14,075
Fair Value | 28,049 | 14,075
U.S. treasuries | Less than 1 year |  |
Investments |  |
Amortized Cost | 211,055 | 78,189
Fair Value | 211,158 | 78,157
U.S. treasuries | Due 1 - 10 years |  |
Investments |  |
Amortized Cost | 6,077 |
Fair Value | 6,078 |
Variable rate demand notes | Due 1 - 10 years |  |
Investments |  |
Amortized Cost | 3,905 |
Fair Value | 3,905 |
Variable rate demand notes | Due 11 - 20 years |  |
Investments |  |
Amortized Cost | 8,886 |
Fair Value | 8,886 |
Variable rate demand notes | Due 21 - 30 years |  |
Investments |  |
Amortized Cost | 6,885 | 4,005
Fair Value | 6,885 | $ 4,005
Variable rate demand notes | Due 31 - 40 years |  |
Investments |  |
Amortized Cost | 2,004 |
Fair Value | $ 2,004 |

X
- Definition This item represents the cost of debt and equity securities net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
Name: | mnst_InvestmentSecuritiesAmortizedCostBasis
Namespace Prefix: | mnst_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_InvestmentHoldingsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=mnst_InvestmentsMaturitiesWithin1YearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=mnst_InvestmentsMaturitiesAfter1YearThrough10YearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_VariableRateDemandObligationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=mnst_InvestmentsMaturitiesAfter10YearsThrough20YearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=mnst_InvestmentsMaturitiesAfter20YearsThrough30YearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=mnst_InvestmentsMaturitiesAfter31YearsThrough40YearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |