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Benefit Plans and Collective Bargaining Agreements (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) employees individual agreements | Dec. 31, 2015 USD ($) | Jan. 03, 2015 USD ($) | Jun. 27, 2014 USD ($)
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |  |  |  |
Employer contributions to union-sponsored defined contribution retirement plans | $ 22 | $ 38 | $ 2,180 |
Bristol, Tennessee and Mineral Ridge, Ohio Facilities [Member] |  |  |  |
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |  |  |  |
Number of collective bargaining agreements (agreements) | agreements | 2 |  |  |
Number of company's employees represented by collective bargaining agreement (employees) | employees | 132 |  |  |
Percentage of company's employees represented by collective bargaining agreement (percent) | 32.00% |  |  |
United Steelworkers [Member] | Bristol, Tennessee and Mineral Ridge, Ohio Facilities [Member] |  |  |  |
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |  |  |  |
Number of individuals representing a collective bargaining agreement (individual) | individual | 2 |  |  |
Bristol Fab [Member] |  |  |  |
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |  |  |  |
Pension withdrawal liability from closure of Bristol Fab |  | $ 644 |  | $ 1,900

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- Definition Percentage of employee participants subject to a collective bargaining arrangement to all of the employer's participants in a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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