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Debt | 12 Months Ended
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Dec. 31, 2019
Debt Disclosure [Abstract] |
Debt | 7. Debt Debt comprised the following at December 31, 2019 and 2018:
(In thousands) |  | Maturity Dates |  | December 31, 2019 |  |  | December 31, 2018 |
Unsecured private placement notes |  |  |  |  |  |  |  |  |  |
3.95% (net of unamortized debt issuance cost of $316 and $360 for 2019 and 2018, respectively) |  | 2021-2027 |  | $ | 99,684 |  |  | $ | 99,640 |
3.86% (net of unamortized debt issuance cost of $291 and $347 for 2019 and 2018, respectively) |  | 2020-2025 |  |  | 85,423 |  |  |  | 99,653 |
4.86% (net of unamortized debt issuance cost of $147 and $186 for 2019 and 2018, respectively) |  | 2020-2023 |  |  | 36,996 |  |  |  | 46,243 |
5.88% (net of unamortized debt issuance cost of $0 and $85 for 2019 and 2018, respectively) |  | 2019 |  |  | — |  |  |  | 22,772 |
Debt of foreign subsidiaries |  |  |  |  |  |  |  |  |  |
Unsecured bank debt, foreign currency |  | 2019 |  |  | — |  |  |  | 7,772 |
Total debt |  |  |  | $ | 222,103 |  |  | $ | 276,080 |
Less current maturities |  |  |  |  | 23,571 |  |  |  | 37,058 |
Long-term debt |  |  |  | $ | 198,532 |  |  | $ | 239,022 |
The Company’s long-term debt financing is currently composed of unsecured private placement notes issued to insurance companies, totaling $222,857,000 as of December 31, 2019. These notes are denominated in U.S. dollars and have fixed interest rates ranging from 3.86 percent to 4.86 percent. The notes had original maturities of 12 years with mandatory amortization of principal beginning six years after issuance. The Company will be required to make amortization payments on the currently outstanding notes from 2020 to 2027. The Company has a committed $350,000,000 multi-currency revolving credit agreement that expires on January 30, 2023. The Company maintains standby letters of credit under its workers’ compensation insurance agreements and for other purposes, as needed from time to time, which are issued under the revolving credit agreement. As of December 31, 2019, the Company had outstanding letters of credit of $4,929,000 and no borrowings under the revolving credit agreement. There was $345,071,000 available under the revolving credit agreement as of December 31, 2019. Loans under the credit agreement may be incurred, at the discretion of the Company, with terms to maturity of one to six months. The Company may choose from two interest rate options: (1) LIBOR applicable to each currency plus spreads ranging from 1.25 percent to 1.875 percent, depending on the Company’s net leverage ratio, or (2) the prime rate plus 0.25 percent to 0.875 percent, depending on the Company’s net leverage ratio. The credit agreement requires the Company to pay a commitment fee ranging from 0.15 percent to 0.325 percent per annum, which also depends on the Company’s net leverage ratio. The credit agreement requires the maintenance of certain financial ratios and compliance with certain other covenants that are similar to the Company’s existing debt agreements, including net worth, interest coverage and leverage financial covenants and limitations on restricted payments, indebtedness and liens. On June 12, 2019, the Company prepaid the $17,100,000 outstanding principal balance of its 5.88 percent Series 2010-A Senior Notes due June 1, 2022 (Notes) and the related make-whole amount of $1,173,000. The make-whole amount primarily reflected the net present value of the remaining scheduled interest payments on the Notes, calculated in accordance with the applicable note purchase agreement. The prepayment was made with cash on hand. The Company also expensed remaining unamortized debt issuance costs of $74,000. The Company’s foreign subsidiaries had no unsecured debt at December 31, 2019. The Company’s loan agreements contain provisions, which, among others, require maintenance of certain financial ratios and place limitations on additional debt, investments and payment of dividends. Based on the loan agreement provisions that place limitations on dividend payments, unrestricted retained earnings (i.e., retained earnings available for dividend distribution) were $283,956,000 and $190,442,000 at December 31, 2019 and 2018, respectively. Debt at December 31, 2019, matures as follows: $23,571,000 in 2020; $37,858,000 in 2021; $37,858,000 in 2022; $37,857,000 in 2023; $28,572,000 in 2024 and $57,141,000 after 2024. Debt maturing in 2020 includes $23,571,000 of scheduled repayments under long-term debt agreements. Although the Company’s foreign subsidiaries currently have no short-term working capital loans, these type of loans routinely exist. These short-term loan agreements could be supplemented, if necessary, by the Company’s $350,000,000 revolving credit agreement entered into on January 30, 2018. Net interest expense for the years ended December 31, 2019, 2018 and 2017, comprised the following:
(In thousands) |  | 2019 |  |  | 2018 |  |  | 2017 |
Interest expense |  | $ | 12,744 |  |  | $ | 13,360 |  |  | $ | 14,428 |
Interest income |  |  | (5,717 | ) |  |  | (1,829 | ) |  |  | (2,075 | )
|  |  | 7,027 |  |  |  | 11,531 |  |  |  | 12,353 |
Capitalized interest |  |  | (1,095 | ) |  |  | (760 | ) |  |  | (909 | )
Interest expense, net |  | $ | 5,932 |  |  | $ | 10,771 |  |  | $ | 11,444 |

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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