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Discontinued Operations Discontinued Operations - NI Industries (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income (loss) from discontinued operations, net of tax | $ 0 | $ 11,140 | $ (4,740) | $ 28,590
NI Industries business [Member] |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Proceeds from Sale of Productive Assets |  | 6,700 |  |
Discontinued Operations [Member] |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Revenue |  | 157,870 | 300,900 | 488,050
Income (loss) from discontinued operations, net of tax |  | 11,140 | (4,740) | 28,590
Discontinued Operations [Member] | NI Industries business [Member] |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Disposal Group, Including Discontinued Operation, Revenue | 0 | 100 | 0 | 3,400
Income (loss) from discontinued operations, net of tax | $ 0 | $ 3,800 | $ 0 | $ 3,800

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