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Segment Reporting (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Net Sales: |  |  |  |  |  |
Total net sales |  | $ 208,853 | $ 203,582 | $ 655,385 | $ 617,004 |
Operating Income (Loss) |  |  |  |  |  |
Total operating income (loss) |  | 18,312 | 13,296 | 54,340 | 44,136 |
Total income before income taxes |  | 16,759 | 11,858 | 52,312 | 39,710 |
Depreciation and Amortization: |  |  |  |  |  |
Total depreciation and amortization |  | 7,066 | 7,096 | 21,942 | 20,672 |
Interest Expense, net: |  |  |  |  |  |
Interest expense, net |  | 1,155 | 1,508 | 3,679 | 4,436 |
Capital Expenditures: |  |  |  |  |  |
Capital expenditures |  | 5,971 | 9,725 | 22,816 | 24,892 |
Total Assets: |  |  |  |  |  |
Total assets |  | 559,252 |  | 559,252 |  | $ 559,037
Total long-term assets |  | 239,342 |  | 239,342 |  | 255,668
Intersegment Eliminations [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | (10,623) | (10,222) | (35,530) | (33,952) |
Total Assets: |  |  |  |  |  |
Total assets |  | (317,986) |  | (317,986) |  | (335,958)
Control Devices [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 109,958 | 107,960 | 339,933 | 342,985 |
Operating Income (Loss) |  |  |  |  |  |
Total operating income (loss) |  | 16,297 | 16,249 | 51,336 | 55,257 |
Depreciation and Amortization: |  |  |  |  |  |
Total depreciation and amortization |  | 3,070 | 2,664 | 8,762 | 8,050 |
Interest Expense, net: |  |  |  |  |  |
Interest expense, net |  | 19 | 19 | 56 | 84 |
Capital Expenditures: |  |  |  |  |  |
Capital expenditures |  | 3,938 | 5,523 | 12,996 | 13,318 |
Control Devices [Member] | Operating Segments [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 108,402 | 106,842 | 333,715 | 339,716 |
Total Assets: |  |  |  |  |  |
Total assets |  | 183,221 |  | 183,221 |  | 164,632
Control Devices [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 1,556 | 1,118 | 6,218 | 3,269 |
Electronics [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 90,654 | 80,313 | 291,238 | 237,307 |
Operating Income (Loss) |  |  |  |  |  |
Total operating income (loss) |  | 8,951 | 4,896 | 25,107 | 13,267 |
Depreciation and Amortization: |  |  |  |  |  |
Total depreciation and amortization |  | 2,213 | 2,136 | 6,756 | 5,947 |
Interest Expense, net: |  |  |  |  |  |
Interest expense, net |  | 32 | 24 | 89 | 68 |
Capital Expenditures: |  |  |  |  |  |
Capital expenditures |  | 725 | 2,417 | 4,892 | 6,451 |
Electronics [Member] | Operating Segments [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 81,587 | 71,354 | 261,928 | 206,769 |
Total Assets: |  |  |  |  |  |
Total assets |  | 265,908 |  | 265,908 |  | 252,324
Electronics [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 9,067 | 8,959 | 29,310 | 30,538 |
PST [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 18,864 | 25,531 | 59,744 | 70,664 |
Operating Income (Loss) |  |  |  |  |  |
Total operating income (loss) |  | 668 | 1,018 | 1,553 | 2,720 |
Depreciation and Amortization: |  |  |  |  |  |
Total depreciation and amortization |  | 1,583 | 2,115 | 5,828 | 6,299 |
Interest Expense, net: |  |  |  |  |  |
Interest expense, net |  | 230 | 378 | 762 | 1,482 |
Capital Expenditures: |  |  |  |  |  |
Capital expenditures |  | 522 | 974 | 2,477 | 2,899 |
PST [Member] | Operating Segments [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 18,864 | 25,386 | 59,742 | 70,519 |
Total Assets: |  |  |  |  |  |
Total assets |  | 81,267 |  | 81,267 |  | 100,382
PST [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  |  | 145 | 2 | 145 |
Corporate [Member] |  |  |  |  |  |
Operating Income (Loss) |  |  |  |  |  |
Total operating income (loss) |  | (7,604) | (8,867) | (23,656) | (27,108) |
Depreciation and Amortization: |  |  |  |  |  |
Total depreciation and amortization |  | 200 | 181 | 596 | 376 |
Interest Expense, net: |  |  |  |  |  |
Interest expense, net |  | 874 | 1,087 | 2,772 | 2,802 |
Capital Expenditures: |  |  |  |  |  |
Capital expenditures |  | 786 | 811 | 2,451 | 2,224 |
Total Assets: |  |  |  |  |  |
Total assets | [1] | 346,842 |  | 346,842 |  | 377,657
North America [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 119,475 | 113,402 | 364,789 | 358,275 |
Total Assets: |  |  |  |  |  |
Total long-term assets |  | 86,895 |  | 86,895 |  | 89,997
South America [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales |  | 18,864 | 25,386 | 59,742 | 70,519 |
Total Assets: |  |  |  |  |  |
Total long-term assets |  | 44,728 |  | 44,728 |  | 58,989
Europe and Other [Member] |  |  |  |  |  |
Net Sales: |  |  |  |  |  |
Total net sales | [2] | 70,514 | $ 64,794 | 230,854 | $ 188,210 |
Total Assets: |  |  |  |  |  |
Total long-term assets |  | $ 107,719 |  | $ 107,719 |  | $ 106,682
[1] | Assets located at Corporate consist primarily of cash, intercompany loan receivables, fixed assets for the corporate headquarter building, equity investments and investments in subsidiaries.
[2] | The amount for the nine months ended September 30, 2017 includes eight months of activity from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4

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