XML 69 R56.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Acquisitions - Intangible Assets Related to Acquisition (Detail) - USD ($) $ in Thousands |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 02, 2015 | Jun. 11, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | $ 1,385,115 | $ 943,374 | $ 773,048
Developed Technology [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Weighted average amortization period |  |  |  | 5 years 3 months 18 days |  |
Customer Relationships [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Weighted average amortization period |  |  |  | 18 years 9 months 18 days |  |
In-Process/Service Research and Development [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Weighted average amortization period |  |  |  | 4 years 7 months 6 days |  |
Tripwire [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization | $ 269,000 |  |  |  |  |
Goodwill | 462,215 |  |  |  |  |
Intangible assets not subject to amortization | 499,215 |  |  |  |  |
Total intangible assets | $ 768,215 |  |  |  |  |
Weighted average amortization period | 7 years 8 months 12 days |  |  |  |  |
Tripwire [Member] | Trademarks [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets not subject to amortization | $ 31,000 |  |  |  |  |
Tripwire [Member] | Developed Technology [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization | $ 210,000 |  |  |  |  |
Weighted average amortization period | 5 years 9 months 18 days |  |  |  |  |
Tripwire [Member] | Customer Relationships [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization | $ 56,000 |  |  |  |  |
Weighted average amortization period | 15 years |  |  |  |  |
Tripwire [Member] | Backlog [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization | $ 3,000 |  |  |  |  |
Weighted average amortization period | 1 year |  |  |  |  |
Tripwire [Member] | In-Process/Service Research and Development [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets not subject to amortization | $ 6,000 |  |  |  |  |
Prosoft Technology, Inc. [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  | $ 40,800 |  |  |  |
Goodwill |  | 56,923 |  |  |  |
Intangible assets not subject to amortization |  | 56,923 |  |  |  |
Total intangible assets |  | $ 97,723 |  |  |  |
Weighted average amortization period |  | 14 years 9 months 18 days |  |  |  |
Prosoft Technology, Inc. [Member] | Trademarks [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  | $ 5,000 |  |  |  |
Weighted average amortization period |  | 5 years |  |  |  |
Prosoft Technology, Inc. [Member] | Developed Technology [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  | $ 9,000 |  |  |  |
Weighted average amortization period |  | 5 years |  |  |  |
Prosoft Technology, Inc. [Member] | Customer Relationships [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  | $ 26,600 |  |  |  |
Weighted average amortization period |  | 20 years |  |  |  |
Prosoft Technology, Inc. [Member] | Backlog [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  | $ 200 |  |  |  |
Weighted average amortization period |  | 3 months 18 days |  |  |  |
Grass Valley [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  |  | $ 65,500 |  |  |
Goodwill |  |  | 131,070 |  |  |
Intangible assets not subject to amortization |  |  | 161,070 |  |  |
Total intangible assets |  |  | $ 226,570 |  |  |
Weighted average amortization period |  |  | 9 years |  |  |
Grass Valley [Member] | Trademarks [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets not subject to amortization |  |  | $ 22,000 |  |  |
Grass Valley [Member] | Developed Technology [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  |  | $ 37,000 |  |  |
Weighted average amortization period |  |  | 5 years |  |  |
Grass Valley [Member] | Customer Relationships [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  |  | $ 27,000 |  |  |
Weighted average amortization period |  |  | 15 years |  |  |
Grass Valley [Member] | Backlog [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets subject to amortization |  |  | $ 1,500 |  |  |
Weighted average amortization period |  |  | 3 months 18 days |  |  |
Grass Valley [Member] | In-Process/Service Research and Development [Member] |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets not subject to amortization |  |  | $ 8,000 |  |  |

X
- Definition Acquired Finite And Indefinite Lived Intangible Assets [Line Items] + References No definition available. + Details
Name: | bdc_AcquiredFiniteAndIndefiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | bdc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
Name: | us-gaap_IntangibleAssetsNetIncludingGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_InProcessResearchAndDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=bdc_TripwireIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=bdc_BacklogMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=bdc_ProsoftTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=bdc_GrassValleyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |