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.