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Restructuring Charges (Schedule Of Accrued Restructuring Balances) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | $ 1,091 us-gaap_RestructuringReserve | $ 717 us-gaap_RestructuringReserve
Restructuring charges | 1,049 us-gaap_RestructuringCharges | 7,084 us-gaap_RestructuringCharges
Cash Payment | (1,809)us-gaap_PaymentsForRestructuring | (4,997)us-gaap_PaymentsForRestructuring
Non-Cash Activity | (344)us-gaap_RestructuringReserveSettledWithoutCash1 | (1,690)us-gaap_RestructuringReserveSettledWithoutCash1
Foreign Exchange Adjustments | 13 us-gaap_RestructuringReserveTranslationAdjustment | (23)us-gaap_RestructuringReserveTranslationAdjustment
Ending Balance | 0 us-gaap_RestructuringReserve | 1,091 us-gaap_RestructuringReserve
2014 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Restructuring charges | 879 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Cash Payment | (879)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Non-Cash Activity | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Foreign Exchange Adjustments | 0 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
2013 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 953 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Restructuring charges | 186 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 5,590 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Cash Payment | (820)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | (3,387)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Non-Cash Activity | (344)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | (1,224)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Foreign Exchange Adjustments | 25 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | (26)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 953 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
2012 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 138 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 704 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Restructuring charges | (16)us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 1,596 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Cash Payment | (110)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | (1,697)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Non-Cash Activity | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | (466)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Foreign Exchange Adjustments | (12)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 1 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 138 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
2011 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance |  | 13 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Restructuring charges |  | (102)us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Cash Payment |  | 87 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Non-Cash Activity |  | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Foreign Exchange Adjustments |  | 2 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Ending Balance |  | 0 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Severance [Member] | 2014 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Restructuring charges | 876 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Cash Payment | (876)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Non-Cash Activity | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Foreign Exchange Adjustments | 0 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Severance [Member] | 2013 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 120 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Restructuring charges | 87 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 2,202 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Cash Payment | (193)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | (2,003)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Non-Cash Activity | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Foreign Exchange Adjustments | (14)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | (79)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 120 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Severance [Member] | 2012 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 34 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 538 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Restructuring charges | 45 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 660 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Cash Payment | (79)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | (1,262)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Non-Cash Activity | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Foreign Exchange Adjustments | 0 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 98 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 34 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Lease Facility Costs [Member] | 2013 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance |  | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Restructuring charges |  | 142 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Cash Payment |  | (139)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Non-Cash Activity |  | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Foreign Exchange Adjustments |  | (3)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Ending Balance |  | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Lease Facility Costs [Member] | 2012 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance |  | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Restructuring charges |  | 798 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Cash Payment |  | (328)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Non-Cash Activity |  | (466)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Foreign Exchange Adjustments |  | (4)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Ending Balance |  | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Lease Facility Costs [Member] | 2011 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance |  | 13 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Restructuring charges |  | (102)us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Cash Payment |  | 87 us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Non-Cash Activity |  | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Foreign Exchange Adjustments |  | 2 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Ending Balance |  | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandElevenMember
Other Exit Costs [Member] | 2014 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Restructuring charges | 3 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Cash Payment | (3)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Non-Cash Activity | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Foreign Exchange Adjustments | 0 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndFourteenMember |
Other Exit Costs [Member] | 2013 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 833 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Restructuring charges | 99 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 3,246 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Cash Payment | (627)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | (1,245)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Non-Cash Activity | (344)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | (1,224)us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Foreign Exchange Adjustments | 39 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 56 us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Ending Balance | 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember | 833 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndThirteenMember
Other Exit Costs [Member] | 2012 [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Beginning Balance | 104 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 166 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Restructuring charges | (61)us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | 138 us-gaap_RestructuringCharges / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Cash Payment | (31)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | (107)us-gaap_PaymentsForRestructuring / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Non-Cash Activity | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember |
Foreign Exchange Adjustments | (12)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | (93)us-gaap_RestructuringReserveTranslationAdjustment / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember
Ending Balance | $ 0 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember | $ 104 us-gaap_RestructuringReserve / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = bhe_OtherexitcostsMember / us-gaap_RestructuringCostAndReserveAxis = bhe_TwoThousandAndTwelveMember

X
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with 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=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_PaymentsForRestructuring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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