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Debt (Tables) | 12 Months Ended
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Dec. 31, 2021
Debt Disclosure [Abstract] |
Debt | Debt comprised the following at December 31, 2021 and 2020:
(In thousands) |  | Maturity Dates |  | December 31, 2021 |  |  | December 31, 2020 |
Unsecured private placement notes |  |  |  |  |  |  |  |  |  |
3.95% (net of unamortized debt issuance cost of $230 and $273 for 2021 and 2020, respectively) |  | 2022-2027 |  | $ | 85,485 |  |  | $ | 99,727 |
3.86% (net of unamortized debt issuance cost of 181 and $236 for 2021 and 2020, respectively) |  | 2022-2025 |  |  | 56,962 |  |  |  | 71,193 |
4.86% (net of unamortized debt issuance cost of $69 and $108 for 2021 and 2020 respectively) |  | 2022-2023 |  |  | 18,502 |  |  |  | 27,749 |
2.30% (net of unamortized debt issuance cost of $100 and $0 for 2021 and 2020, respectively) |  | 2024-2028 |  |  | 49,900 |  |  |  | — |
2.37% (net of unamortized debt issuance cost of $108 and $0 for 2021 and 2020, respectively) |  | 2024-2028 |  |  | 49,892 |  |  |  | — |
2.73% (net of unamortized debt issuance cost of $22 and $0 for 2021 and 2020, respectively) |  | 2025-2031 |  |  | 99,978 |  |  |  | — |
Debt of foreign subsidiaries |  |  |  |  |  |  |  |  |  |
Unsecured bank debt, foreign currency |  | 2022 |  |  | 2,861 |  |  |  | — |
Total debt |  |  |  | $ | 363,580 |  |  | $ | 198,669 |
Less current maturities |  |  |  |  | 40,718 |  |  |  | 37,857 |
Long-term debt |  |  |  | $ | 322,862 |  |  | $ | 160,812 |
Schedule of Net Interest Expense | Net interest expense for the years ended December 31, 2021, 2020 and 2019, comprised the following:
(In thousands) |  | 2021 |  |  | 2020 |  |  | 2019 |
Interest expense |  | $ | 10,145 |  |  | $ | 9,859 |  |  | $ | 12,744 |
Interest income |  |  | (1,255 | ) |  |  | (2,171 | ) |  |  | (5,717 | )
|  |  | 8,890 |  |  |  | 7,688 |  |  |  | 7,027 |
Capitalized interest |  |  | (3,137 | ) |  |  | (2,279 | ) |  |  | (1,095 | )
Interest expense, net |  | $ | 5,753 |  |  | $ | 5,409 |  |  | $ | 5,932 |

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