XML 91 R78.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Severance, Restructuring and Acquisition Integration Activities - Additional Information (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2015 USD ($) | Sep. 27, 2015 USD ($) | Jun. 28, 2015 USD ($) | Mar. 29, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 28, 2014 USD ($) | Jun. 29, 2014 USD ($) | Mar. 30, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) Program | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Mar. 27, 2016 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs | $ 13,600 | $ 14,100 | $ 4,900 | $ 14,600 | $ 22,000 | $ 9,200 | $ 38,200 | $ 1,400 |  | $ 47,170 | $ 70,827 | $ 14,888 |
Reduction in operating expenses |  |  |  |  |  |  |  |  |  | $ 18,000 |  |  |
Number of significant programs | Program |  |  |  |  |  |  |  |  |  | 4 |  |  |
Cost of Sales [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  | $ 9,400 | 20,700 | 7,100 |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  | 31,700 | 46,500 | 6,500 |
Research and Development [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  | 6,100 | $ 3,600 | $ 1,300 |
Grass Valley Restructuring Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  | 25,400 |  |  |
Expected savings from the restructuring program | $ 30,000 |  |  |  |  |  |  |  |  |  |  |  |
Grass Valley Restructuring Program [Member] | Scenario Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Additional severance and other restructuring costs |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000
Productivity Improvement Program and Acquisition Integration [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  | 18,500 |  |  |
Industrial Restructuring Program 2015 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Severance, restructuring, and acquisition integration costs |  |  |  |  |  |  |  |  |  | $ 3,300 |  |  |
Industrial Restructuring Program 2015 [Member] | Scenario Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Additional severance and other restructuring costs |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,000
Expected savings from the restructuring program |  |  |  |  |  |  |  |  | $ 18,000 |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and integration cost payable period |  |  |  |  |  |  |  |  |  | 60 days |  |  |

X
- Definition Expected savings from restructuring. + References No definition available. + Details
Name: | bdc_ExpectedSavingsFromRestructuring
Namespace Prefix: | bdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number Of Restructuring Programs + References No definition available. + Details
Name: | bdc_NumberOfRestructuringPrograms
Namespace Prefix: | bdc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reduction In Operating Expenses + References No definition available. + Details
Name: | bdc_ReductionInOperatingExpenses
Namespace Prefix: | bdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Restructuring and integration cost payable period. + References No definition available. + Details
Name: | bdc_RestructuringAndIntegrationCostPayablePeriod
Namespace Prefix: | bdc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Savings from restructuring. + References No definition available. + Details
Name: | bdc_SavingsFromRestructuring
Namespace Prefix: | bdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expected cost remaining for the specified restructuring cost. + References No definition available. + Details
Name: | us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
Name: | us-gaap_RestructuringCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=bdc_GrassValleyRestructuringProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=bdc_ProductivityImprovementProgramAndAcquisitionIntegrationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=bdc_IndustrialRestructuringProgram2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |