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Income Taxes (Schedule Of Federal Statutory Income Tax Rate To Income Before Income Tax) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Taxes [Abstract] |  |  |
Tax at statutory rate | $ 34,947 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 40,662 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 26,404 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State taxes, net of federal tax effect | 1,615 us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | 1,033 us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | 2,012 us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Effect of foreign operations and tax incentives | (24,737)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | (19,138)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | (11,710)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Change in valuation allowance | (118)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | (17,880)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | (44)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Chinese retroactive tax incentive | (1,227)bhe_Discreteincometaxexpensebenefit | 0 bhe_Discreteincometaxexpensebenefit | 0 bhe_Discreteincometaxexpensebenefit
Losses in foreign jurisdictions for which no benefit has been provided | 5,812 bhe_Incometaxreconciliationlossesinforeignjurisdictionsforwhichnobenefithasbeenprovided | 1,013 bhe_Incometaxreconciliationlossesinforeignjurisdictionsforwhichnobenefithasbeenprovided | 927 bhe_Incometaxreconciliationlossesinforeignjurisdictionsforwhichnobenefithasbeenprovided
American Taxpayer Relief Act of 2012 | 0 bhe_Americantaxpayerreliefactof2012 | (844)bhe_Americantaxpayerreliefactof2012 | 0 bhe_Americantaxpayerreliefactof2012
Other | 1,116 us-gaap_IncomeTaxReconciliationOtherAdjustments | 172 us-gaap_IncomeTaxReconciliationOtherAdjustments | 1,243 us-gaap_IncomeTaxReconciliationOtherAdjustments
Total income tax expense | $ 17,408 us-gaap_IncomeTaxExpenseBenefit | $ 5,018 us-gaap_IncomeTaxExpenseBenefit | $ 18,832 us-gaap_IncomeTaxExpenseBenefit

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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