Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Apr. 02, 2023	Dec. 31, 2022
Leases [Abstract]
2023	$ 13,153	$ 15,815
2024	15,343	14,809
2025	14,010	13,472
2026	12,495	11,964
2027	6,664	6,464
Thereafter	21,094	20,907
Total	$ 82,759	$ 83,431

Lessee, Operating and Finance Leases, Liability, to be Paid

No definition available.

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Lessee, Operating and Finance Leases, Liability, to be Paid, Remainder of Fiscal Year

No definition available.

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Lessee, Operating and Finance Leases, Liability, to be Paid, Thereafter

No definition available.

Name:	bdc_LesseeOperatingAndFinanceLeasesLiabilityToBePaidThereafter
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Lessee, Operating and Finance Leases, Liability, to be Paid, Year Four

No definition available.

Name:	bdc_LesseeOperatingAndFinanceLeasesLiabilityToBePaidYearFour
Namespace Prefix:	bdc_
Data Type:	xbrli:monetaryItemType
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Lessee, Operating and Finance Leases, Liability, to be Paid, Year One

No definition available.

Name:	bdc_LesseeOperatingAndFinanceLeasesLiabilityToBePaidYearOne
Namespace Prefix:	bdc_
Data Type:	xbrli:monetaryItemType
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Lessee, Operating and Finance Leases, Liability, to be Paid, Year Three

No definition available.

Name:	bdc_LesseeOperatingAndFinanceLeasesLiabilityToBePaidYearThree
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Data Type:	xbrli:monetaryItemType
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Lessee, Operating and Finance Leases, Liability, to be Paid, Year Two

No definition available.

Name:	bdc_LesseeOperatingAndFinanceLeasesLiabilityToBePaidYearTwo
Namespace Prefix:	bdc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.