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Debt (Tables) | 12 Months Ended
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Dec. 31, 2016
Debt Disclosure [Abstract] |
Debt | Debt comprised the following at December 31, 2016 and 2015:
(In thousands) |  | Maturity Dates |  | December 31, 2016 |  |  | December 31, 2015 (1) |
Unsecured private placement notes |  |  |  |  |  |  |  |  |  |
3.95% (net of unamortized debt issuance cost of $382 and $383 for 2016 and 2015, respectively) |  | 2021-2027 |  | $ | 99,618 |  |  | $ | 99,617 |
3.86% (net of unamortized debt issuance cost of $390 and $440 for 2016 and 2015, respectively) |  | 2019-2025 |  |  | 99,610 |  |  |  | 99,560 |
4.86% (net of unamortized debt issuance cost of $225 and $260 for 2016 and 2015, respectively) |  | 2017-2023 |  |  | 64,775 |  |  |  | 64,740 |
5.88% (net of unamortized debt issuance cost of $116 and $140 for 2016 and 2015, respectively) |  | 2017-2022 |  |  | 34,170 |  |  |  | 39,860 |
5.69% (net of unamortized debt issuance cost of $28 and $46 for 2016 and 2015, respectively) |  | 2017-2018 |  |  | 11,400 |  |  |  | 17,096 |
Debt of foreign subsidiaries |  |  |  |  |  |  |  |  |  |
Unsecured bank debt, foreign currency |  | 2017 |  |  | 432 |  |  |  | 4,810 |
Unsecured bank term loan, foreign currency |  | 2021 |  |  | — |  |  |  | 3,724 |
Secured bank debt, foreign currency |  | 2017 |  |  | 7,008 |  |  |  | 1,947 |
Total debt |  |  |  | $ | 317,013 |  |  | $ | 331,354 |
Less current maturities |  |  |  |  | 28,154 |  |  |  | 18,806 |
Long-term debt |  |  |  | $ | 288,859 |  |  | $ | 312,548 |
Schedule of Net Interest Expense | Net interest expense for the years ended December 31, 2016, 2015 and 2014, comprised the following:
(In thousands) |  | 2016 |  |  | 2015 |  |  | 2014 |
Interest expense |  | $ | 15,240 |  |  | $ | 15,488 |  |  | $ | 12,542 |
Interest income |  |  | (1,247 | ) |  |  | (217 | ) |  |  | (262 | )
|  |  | 13,993 |  |  |  | 15,271 |  |  |  | 12,280 |
Capitalized interest |  |  | (788 | ) |  |  | (738 | ) |  |  | (839 | )
Interest expense, net |  | $ | 13,205 |  |  | $ | 14,533 |  |  | $ | 11,441 |

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