XML 66 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.8

COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2012 | Jun. 30, 2013 TRP [Member] | Sep. 30, 2011 SynQor, Inc. [Member] | Jun. 30, 2011 SynQor, Inc. [Member] | Dec. 31, 2010 SynQor, Inc. [Member] | Jun. 30, 2013 SynQor, Inc. [Member] Defendant | Jun. 30, 2013 Molex Inc. [Member] Patent
Leases [Abstract] |  |  |  |  |  |  |
Future minimum lease payments for operating leases | $ 11.5 | $ 2.7 |  |  |  |  |
Other commitments [Abstract] |  |  |  |  |  |  |
Outstanding purchase orders related to raw materials | 18.8 | 4.5 |  |  |  |  |
Outstanding purchase orders related to capital expenditures | 1.7 | 0.2 |  |  |  |  |
Number of defendants |  |  |  |  |  | 11 |
Damages awarded |  |  |  | 2.5 | 8.1 |  |
Damages covered through indemnification agreement |  |  |  | 1.9 |  |  |
Damages recorded as expenses |  |  | 0.2 | 0.6 |  |  |
Supersedeas bond posted to court |  |  |  |  |  | $ 13 |
Number of patents |  |  |  |  |  |  | 3

X
- Definition Refers to damages covered through indemnification agreement. + References No definition available. + Details
Name: | belfb_DamagesCoveredThroughIndemnificationAgreement
Namespace Prefix: | belfb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of patents infringed against the entity. + References No definition available. + Details
Name: | belfb_NumberOfPatents
Namespace Prefix: | belfb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | belfb_OtherCommitmentsAbstract
Namespace Prefix: | belfb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Refers to outstanding purchase orders related to capital expenditures. + References No definition available. + Details
Name: | belfb_OutstandingPurchaseOrdersRelatedToCapitalExpenditures
Namespace Prefix: | belfb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Refers to outstanding purchase orders related to raw materials. + References No definition available. + Details
Name: | belfb_OutstandingPurchaseOrdersRelatedToRawMaterials
Namespace Prefix: | belfb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Refers to supersedeas bond posted to court for full amount of the damage award plus costs and interest. + References No definition available. + Details
Name: | belfb_SupersedeasBondPostedToCourt
Namespace Prefix: | belfb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the expenses incurred by the entity which are directly related and attributable to receiving an award in settlement of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of damages awarded to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyDamagesAwardedValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of defendants named in a legal action. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant