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Business Acquisitions and Investments, General Cable Corporation Acquisitions (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 31, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Assets acquired and liabilities assumed [Abstract] |  |  |  |  |  |  |
Goodwill |  |  | $ 67,401 |  | $ 67,401 |  | $ 67,231
Incremental net sales from acquisition | [1] |  | 312,729 | $ 288,977 | 595,107 | $ 527,888 |
General Cable Corporation [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of equity interest acquired |  | 100.00% |  |  |  |  |
Allocation of purchase price to the assets acquired and liabilities assumed [Abstract] |  |  |  |  |  |  |
Purchase Price |  | $ 67,451 |  |  |  |  |
Assets acquired and liabilities assumed [Abstract] |  |  |  |  |  |  |
Receivables |  | 3,130 |  |  |  |  |
Inventory |  | 12,567 |  |  |  |  |
Other current and noncurrent assets | [2] | 334 |  |  |  |  |
Property, plant and equipment, net |  | 2,660 |  |  |  |  |
Intangible assets |  | 42,440 |  |  |  |  |
Goodwill |  | 12,746 |  |  |  |  |
Current liabilities |  | (6,426) |  |  |  |  |
Net assets acquired |  | 67,451 |  |  |  |  |
Cash acquired |  | 200 |  |  |  |  |
Incremental net sales from acquisition |  |  | $ 15,000 |  | $ 38,400 |  |
General Cable Corporation [Member] | Customer Relationships [Member] |  |  |  |  |  |  |
Assets acquired and liabilities assumed [Abstract] |  |  |  |  |  |  |
Intangible assets acquired in business acquisition |  | $ 39,400 |  |  |  |  |
Estimated useful life of intangible assets |  | 15 years |  |  |  |  |
General Cable Corporation [Member] | Non-Compete Agreements [Member] |  |  |  |  |  |  |
Assets acquired and liabilities assumed [Abstract] |  |  |  |  |  |  |
Intangible assets acquired in business acquisition |  | $ 2,200 |  |  |  |  |
Estimated useful life of intangible assets |  | 5 years |  |  |  |  |
General Cable Corporation [Member] | Supply Agreement [Member] |  |  |  |  |  |  |
Assets acquired and liabilities assumed [Abstract] |  |  |  |  |  |  |
Intangible assets acquired in business acquisition |  | $ 800 |  |  |  |  |
Estimated useful life of intangible assets |  | 1 year |  |  |  |  |
[1] | Segment net sales includes intersegment sales in our Engine Management and Temperature Control segments.
[2] | Other current and noncurrent assets includes $0.2 million of cash acquired.

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