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Summary of Significant Accounting Policies (Statements of Operations for Discontinued Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Post-disposition purchases from Wiring |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 425 | $ 689 | $ 269 |
Post-disposition sales to Wiring |  |  |  |  |  |  |  |  |  |  |  |  |  | 19,766 | 26,952 | 12,230 |
Net sales |  | $ 172,612 | $ 173,846 | $ 186,903 | $ 162,616 | $ 154,641 |  | $ 162,057 |  | $ 165,289 |  | $ 162,825 |  | 695,977 | 644,812 | 660,579 |
Cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,538 | 467,834 | 469,705 |
Selling, general and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  | 111,145 | 110,371 | 123,630 |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,277 | 6,365 | 16,880 |
Other expense (income), net |  |  |  |  |  |  |  |  |  |  |  |  |  | (147) | 1,828 | 565 |
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (811) |
Loss on disposal, net of tax |  |  |  |  |  | 16 |  | (113) |  | 55 |  | (168) |  |  | (210) | (8,576) |
Income (loss) from discontinued operations |  |  |  |  |  | 16 | [1] | $ (113) | [1] | $ 55 | [1] | $ (168) | [1] |  | (210) | (9,387) |
Wiring [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Post-disposition sales to Wiring |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 19,766 |  |  |
Net sales | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 167,434 |
Cost of goods sold | [2],[3] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 154,787 |
Selling, general and administrative | [2],[3] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,697 |
Interest expense, net | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 69 |
Other expense (income), net | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (58) |
Income (loss) from operations of discontinued operations before income taxes | [2],[3] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (61) |
Income tax provision on discontinued operations | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (750) |
Income (loss) from discontinued operations, net of tax | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (811) |
Loss on disposal | [4] |  |  |  |  |  |  |  |  |  |  |  |  |  | (241) | (6,955) | [2]
Income tax expense on gain (loss) on disposal | [5] |  |  |  |  |  |  |  |  |  |  |  |  |  | 31 | (1,621) | [2]
Loss on disposal, net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (210) | (8,576) | [2]
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (210) | (9,387) | [2]
Transaction costs related to sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 223 | 1,384 |
Working capital and other adjustment |  |  |  |  |  | $ 18 |  |  |  |  |  |  |  |  | $ 18 |  |
Deferred foreign currency translation on disposal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,734 |
[1] | A gain (loss) on disposal of the Wiring business was recorded for the quarters ended March 31, 2015, June 30, 2015, September 30, 2015 and December 31, 2015 for $(168), $55, $(113) and $16, respectively
[2] | The operations of the Wiring business were presented only for the seven months ended July 31, 2014 because the sale was completed on August 1, 2014.
[3] | The assets and liabilities of the Wiring business were reclassified as held for sale effective May 26, 2014. Accordingly, depreciation and amortization for the related Wiring assets were not recorded after that date.
[4] | Included in loss on disposal for the years ended December 31, 2015 and 2014 were transaction costs of $223 and $1,384, respectively. The loss on disposal also includes a working capital and other adjustments of $18 for the year ended December 31, 2015. In addition, the loss on disposal included $2,734 in previously deferred foreign currency translation for the year ended December 31, 2014.
[5] | Gains and losses from foreign currency remeasurement related to income taxes were included as a component of income tax (expense) benefit.

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