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TAXES (Details 2) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2013 | Dec. 31, 2014
Taxes |  |  |
Withdrawal of pending use tax refund requests |  | $ 1.6 mcri_WithdrawalOfPendingUseTaxRefundRequests |
Reversal of previously accrued sales tax | 0.6 us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable |  |
State of Nevada |  |  |
Taxes |  |  |
Amount of requested refund, excluding interest | 1.6 mcri_ExpectedRefundOfUseTaxPaidSubsequentlyRuledExemptFromUseTax / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember | 1.6 mcri_ExpectedRefundOfUseTaxPaidSubsequentlyRuledExemptFromUseTax / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember |
Accrued sales tax | 0.6 us-gaap_SalesAndExciseTaxPayableCurrent / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember | 0.6 us-gaap_SalesAndExciseTaxPayableCurrent / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember |
Monarch Black Hawk |  |  |
Taxes |  |  |
General business credit (GBC) carryforwards |  |  | 0.3 us-gaap_TaxCreditCarryforwardAmount / us-gaap_BusinessAcquisitionAxis = mcri_RivieraBlackHawkIncMember
Carryforwards subject to an annual base limitation |  |  | 1.25 mcri_TaxCreditCarryforwardAnnualAmountLimitations / us-gaap_BusinessAcquisitionAxis = mcri_RivieraBlackHawkIncMember
Monarch Black Hawk | IRS |  |  |
Taxes |  |  |
NOL carryforwards |  |  | 8.6 us-gaap_OperatingLossCarryforwards / us-gaap_BusinessAcquisitionAxis = mcri_RivieraBlackHawkIncMember / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember
Monarch Black Hawk | State of Nevada |  |  |
Taxes |  |  |
NOL carryforwards |  |  | $ 20.7 us-gaap_OperatingLossCarryforwards / us-gaap_BusinessAcquisitionAxis = mcri_RivieraBlackHawkIncMember / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember

X
- Definition The amount of the additional liability or refund received or expected to be received for use tax paid based on a final court decision. + References No definition available. + Details
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- Definition Description of the annual amount limitation related to use of the tax credit carryforward. + References No definition available. + Details
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- Definition The withdrawal of pending use tax refund requests after a new ruling was issued by the tax commission. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition The increase (decrease) during the period in the amount of cash payments due to taxing authorities for non-income-related taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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- Definition Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Liabilities -URI http://asc.fasb.org/extlink&oid=6509677 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 + Details
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- Details
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- Details
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- Details
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