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Debt (Tables) | 12 Months Ended
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Dec. 31, 2018
Debt Disclosure [Abstract] |
Debt | Debt comprised the following at December 31, 2018 and 2017:
(In thousands) |  | Maturity Dates |  | December 31, 2018 |  |  | December 31, 2017 |
Unsecured private placement notes |  |  |  |  |  |  |  |  |  |
3.95% (net of unamortized debt issuance cost of $360 and $346 for 2018 and 2017, respectively) |  | 2021-2027 |  | $ | 99,640 |  |  | $ | 99,654 |
3.86% (net of unamortized debt issuance cost of $347 and $343 for 2018 and 2017, respectively) |  | 2019-2025 |  |  | 99,653 |  |  |  | 99,657 |
4.86% (net of unamortized debt issuance cost of $186 and $191 for 2018 and 2017, respectively) |  | 2018-2023 |  |  | 46,243 |  |  |  | 55,523 |
5.88% (net of unamortized debt issuance cost of $85 and $95 for 2018 and 2017, respectively) |  | 2018-2022 |  |  | 22,772 |  |  |  | 28,476 |
5.69% (net of unamortized debt issuance cost of $0 and $12 for 2018 and 2017, respectively) |  | 2018 |  |  | — |  |  |  | 5,703 |
Debt of foreign subsidiaries |  |  |  |  |  |  |  |  |  |
Unsecured bank debt, foreign currency |  | 2019 |  |  | 7,772 |  |  |  | 1,786 |
Total debt |  |  |  | $ | 276,080 |  |  | $ | 290,799 |
Less current maturities |  |  |  |  | 37,058 |  |  |  | 22,500 |
Long-term debt |  |  |  | $ | 239,022 |  |  | $ | 268,299 |
Schedule of Net Interest Expense | Net interest expense for the years ended December 31, 2018, 2017 and 2016, comprised the following:
(In thousands) |  | 2018 |  |  | 2017 |  |  | 2016 |
Interest expense |  | $ | 13,360 |  |  | $ | 14,428 |  |  | $ | 15,240 |
Interest income |  |  | (1,829) |  |  |  | (2,075 | ) |  |  | (1,247 | )
|  |  | 11,531 |  |  |  | 12,353 |  |  |  | 13,993 |
Capitalized interest |  |  | (760) |  |  |  | (909 | ) |  |  | (788 | )
Interest expense, net |  | $ | 10,771 |  |  | $ | 11,444 |  |  | $ | 13,205 |

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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