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Note 7 - Stockholders' Equity and Stock Incentive Plans - Share Repurchases (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2020

Sep. 30, 2019

Sep. 30, 2020

Sep. 30, 2019

Shares repurchased (1) (in shares)

^[1]

0

11

683

1,087

Total cost, including brokerage fees

$ 0

$ 284

$ 11,121

$ 28,044

Average repurchase price per share (2) (in dollars per share)

^[2]

$ 0

$ 25.01

$ 16.29

$ 25.81

[1]	All shares repurchased have been retired and constitute authorized but unissued shares.
[2]	Amounts in the table may not recalculate exactly due to rounding. Average repurchase price per share is calculated based on unrounded numbers.

X

- Definition

Average repurchase price per share under the share repurchase program.

+ References

No definition available.

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X

- Definition

Equity impact of the value of stock that has been repurchased and retired during the period, including fees. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

No definition available.

+ Details

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Namespace Prefix:	byd_
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X

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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