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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Operating items, net (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |
Other operating items, net | $ 812 | $ 1,157 | $ 1,566 | $ 2,462
Professional service fees |  | 200 | 1,500 | 300
Equipment, supplies and employee testing expenses due to the COVID-19 pandemic |  | 300 | $ 100 | 300
Pre-opening expenses relating to the Monarch Black Hawk Expansion project |  | 200 |  | 1,000
Colorado legislation lobbying expenses |  | $ 500 |  | $ 900

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- Definition Represents Colorado legislation lobbying expenses. + References No definition available. + Details
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- Definition Represents expenses due to the COVID-19 pandemic. + References No definition available. + Details
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- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
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- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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- Definition Expenditures associated with opening new locations which are noncapital in nature and expensed as incurred. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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