(In thousands)	Maturity Dates	March 31, 2022		December 31, 2021
Unsecured private placement notes
3.95% (net of unamortized debt issuance cost of $218 and $230 for 2022 and 2021, respectively)	2022-2027	$	85,496	$	85,485
3.86% (net of unamortized debt issuance cost of $167 and $181 for 2022 and 2021, respectively)	2022-2025		56,976		56,962
4.86% (net of unamortized debt issuance cost of $60 and $69 for 2022 and 2021, respectively)	2022-2023		18,512		18,502
2.30% (net of unamortized debt issuance cost of $138 and $100 for 2022 and 2021, respectively)	2024-2028		49,862		49,900
2.37% (net of unamortized debt issuance cost of $145 and $108 for 2022 and 2021, respectively)	2024-2028		49,855		49,892
2.73% (net of unamortized debt issuance cost of $62 and $22 for 2022 and 2021, respectively)	2025-2031		99,938		99,978
2.83% (net of unamortized debt issuance cost of $22 and $0 for 2022 and 2021, respectively)	2026-2032		74,978		—
Revolving credit facility borrowing	2022		100,000		—
Debt of foreign subsidiaries
Unsecured bank debt, foreign currency	2022		1,497		2,861
Total debt		$	537,114	$	363,580
Less current maturities			139,354		40,718
Long-term debt		$	397,760	$	322,862

On March 1, 2022, pursuant to a note purchase and master note agreement dated as of June 10, 2021 (the NYL note purchase agreement), the Company issued and sold $25,000,000 in aggregate principal amount of its 2.83% Senior Notes, Series 2022-A, due March 1, 2032 (the Series 2022-A Notes). In addition, on March 1, 2022, pursuant to a note purchase and private shelf agreement dated as of June 10, 2021 (the Prudential note purchase agreement), the Company issued and sold $50,000,000 in aggregate principal amount of its 2.83% Senior Notes, Series 2022-B, due March 1, 2032 (the Series 2022-B Notes). The Series 2022-A Notes and the Series 2022-B Notes bear interest at a fixed rate of 2.83%, with interest to be paid semi-annually and with equal annual principal payments beginning on March 1, 2026 and continuing through final maturity on March 1, 2032. The proceeds of the issuance of the Series 2022-A Notes and the Series 2022-B Notes are being used primarily for capital expenditures, to pay down existing debt and for other corporate purposes. The NYL note purchase agreement and the Prudential note purchase agreement require the maintenance of certain financial ratios and covenants that are substantially similar to the Company’s existing long-term debt and provide for customary events of default.

The Company has a committed $350,000,000 multi-currency revolving credit agreement that expires on January 30, 2023. The Company maintains import letters of credit, and 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 March 31, 2022, the Company had outstanding letters of credit totaling $6,993,000 and $100,000,000 outstanding borrowings under the revolving credit agreement. There was $243,007,000 available under the revolving credit agreement as of March 31, 2022.

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 $495,572,000 and $468,095,000 at March 31, 2022 and December 31, 2021, respectively.