XML 29 R81.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Thailand Flood Related Charges (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Thailand flood related items, net of insurance | $ (41,325,000) | $ 9,028,000 | $ 3,362,000
Proceeds of insurance | $ 41,200,000 |  |

X
- Definition Flood Related Items, Net Of Insurance + References No definition available. + Details
Name: | bhe_FloodRelatedItemsNetOfInsurance
Namespace Prefix: | bhe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds Of Insurance + References No definition available. + Details
Name: | bhe_ProceedsOfInsurance
Namespace Prefix: | bhe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration