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Segment Reporting (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
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, 2014 | Jun. 30, 2014 | Sep. 30, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | $ 695,977 | $ 644,812 | $ 660,579
Income (Loss) Before Income Taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) |  | $ 10,170 | $ 11,780 | $ 13,626 | $ 8,506 | $ 8,327 | $ 8,947 | $ 7,415 | $ 3,126 |  |  |  | 44,082 | 27,815 | (25,823)
Total income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 39,185 | 20,230 | (53,060)
Interest Expense, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  | 6,277 | 6,365 | 16,880
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  |  | 24,476 | 28,735 | 24,754
Long-Lived Assets |  | 153,636 |  |  |  | 132,343 |  |  |  |  |  |  | 153,636 | 132,343 |
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets |  | 394,529 |  |  |  | 364,252 |  |  |  |  |  |  | 394,529 | 364,252 |
Goodwill impairment charge (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51,458
Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 695,977 | 644,812 | 660,579
Income (Loss) Before Income Taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 44,082 | 27,815 | (25,823)
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization | [1] |  |  |  |  |  |  |  |  |  |  |  | 23,258 | 22,409 | 27,105
Interest Expense, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  | 6,277 | 6,365 | 16,880
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  |  | 24,476 | 28,735 | 23,516
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets |  | 394,529 |  |  |  | 364,252 |  |  |  |  |  |  | 394,529 | 364,252 |
Eliminations [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | (35,187) | (24,959) | (38,243)
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets |  | (250,494) |  |  |  | (249,789) |  |  |  |  |  |  | (250,494) | (249,789) |
Electronics [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 238,617 | 239,448 | 249,304
Income (Loss) Before Income Taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 14,798 | 13,784 | 17,444
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 3,971 | 3,666 | 4,432
Interest Expense, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  | 142 | 161 | 695
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  |  | 5,665 | 6,538 | 3,541
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets |  | 99,964 |  |  |  | 97,443 |  |  |  |  |  |  | 99,964 | 97,443 |
Electronics [Member] | Operating Segments [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 205,256 | 216,544 | 214,141
Electronics [Member] | Inter-Segment Sales [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 33,361 | 22,904 | 35,163
Control Devices [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 409,958 | 335,065 | 309,738
Income (Loss) Before Income Taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 61,815 | 44,690 | 35,387
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 10,276 | 9,260 | 9,545
Interest Expense, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  | 226 | 326 | 303
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  |  | 13,261 | 15,094 | 13,658
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets |  | 150,623 |  |  |  | 127,649 |  |  |  |  |  |  | 150,623 | 127,649 |
Control Devices [Member] | Operating Segments [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 408,132 | 333,010 | 306,658
Control Devices [Member] | Inter-Segment Sales [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 1,826 | 2,055 | 3,080
Corporate [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (Loss) Before Income Taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) | [2] |  |  |  |  |  |  |  |  |  |  |  | 29,069 | 23,117 | 19,067
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 452 | 211 | 130
Interest Expense, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  | 2,513 | 2,921 | 13,118
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures | [3] |  |  |  |  |  |  |  |  |  |  |  | 2,337 | 1,214 | 156
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | [3] | 287,031 |  |  |  | 288,806 |  |  |  |  |  |  | 287,031 | 288,806 |
PST [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment charge (benefit) |  |  |  |  |  |  |  |  |  | $ 27,960 | $ 29,300 | $ 23,498 |  |  | 51,458
PST [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 82,589 | 95,258 | 139,780
Income (Loss) Before Income Taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (3,462) | (7,542) | (59,587)
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 8,559 | 9,272 | 12,998
Interest Expense, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  |  |  |  |  | 3,396 | 2,957 | 2,764
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  |  | 3,213 | 5,889 | 6,161
Total Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets |  | $ 107,405 |  |  |  | $ 100,143 |  |  |  |  |  |  | 107,405 | 100,143 |
PST [Member] | Operating Segments [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  | 82,589 | 95,258 | 139,780
PST [Member] | Inter-Segment Sales [Member] | Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | These amounts represent depreciation and amortization on property, plant and equipment and certain intangible assets.
[2] | Unallocated Corporate expenses include, among other items, accounting, finance, legal, information technology costs as well as share-based compensation.
[3] | Corporate assets consist primarily of cash, intercompany loan receivables, capital expenditures for the new headquarter building, equity investments and investments in subsidiaries.

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