XML 32 R42.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Major Customers (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Major Customers [Abstract] |
Schedule Of Sales To Largest Customers | Sales to our largest customers were as follows for the indicated periods:
|  |  |  | Year ended December 31,
(in thousands) |  | 2019 |  |  | 2018 |  |  | 2017
| International Business Machines Corporation | $ | * |  | $ | 323,795 |  | $ | 284,636
| Applied Materials, Inc. | $ | * |  | $ | * |  | $ | 248,183
* amount is less than 10% of total sales.

X
- Definition Major Customers Abstract + References No definition available. + Details
Name: | bhe_MajorCustomersAbstract
Namespace Prefix: | bhe_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRevenueByMajorCustomersByReportingSegmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration