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Summary of Significant Accounting Policies - Disaggregated Revenue (Details)	3 Months Ended		9 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Disaggregation Of Revenue
Net sales percentage	100.00%	100.00%	100.00%	100.00%
Stores
Disaggregation Of Revenue
Net sales percentage	82.00%	82.00%	84.00%	83.00%
E-commerce
Disaggregation Of Revenue
Net sales percentage	18.00%	18.00%	16.00%	17.00%
Footwear
Disaggregation Of Revenue
Net sales percentage	48.00%	49.00%	50.00%	51.00%
Apparel
Disaggregation Of Revenue
Net sales percentage	37.00%	37.00%	35.00%	34.00%
Hats, accessories and other
Disaggregation Of Revenue
Net sales percentage	15.00%	14.00%	15.00%	15.00%

X

- Definition

Percentage of revenue generated from contract with customers.

+ References

No definition available.

+ Details

Name:	boot_RevenueFromContractWithCustomerPercentage
Namespace Prefix:	boot_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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_DisaggregationOfRevenueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ContractWithCustomerSalesChannelAxis=boot_StoresChannelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ContractWithCustomerSalesChannelAxis=boot_ECommerceChannelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=boot_FootwearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=boot_ApparelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=boot_HatsAccessoriesAndOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: