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Note 7 - Long-term Debt - Maximum Secured Leverage Ratio (Details) | Dec. 31, 2019
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Four Fiscal Quarters Ended March 31, 2019 through December 31, 2019 [Member] |
Maximum secured leverage ratio | 3.75
Four Fiscal Quarters Ended March 31, 2020 and Thereafter [Member] |
Maximum secured leverage ratio | 3.50

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- Definition The maximum secured leverage ratio allowed under line of credit facility covenant terms. + References No definition available. + Details
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Namespace Prefix: | byd_
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Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |