Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2022

Our outstanding long-term debt is shown below:


	As of December 31,
(in thousands)	2022		2021
Uncollateralized Senior Notes:
5.93% note, due October 31, 2023	$	3,000	$	6,000
5.68% note, due June 30, 2026	11,600		14,500
6.43% note, due May 2, 2028	4,200		4,900
3.73% note, due December 16, 2028	12,000		14,000
3.88% note, due May 15, 2029	35,000		40,000
3.25% note, due April 30, 2032	66,500		70,000
3.48% note, due May 31, 2038	50,000		50,000
3.58% note, due November 30, 2038	50,000		50,000
3.98% note, due August 20, 2039	100,000		100,000
2.98% note, due December 20, 2034	70,000		70,000
3.00% note, due July 15, 2035	50,000		50,000
2.96% note, due August 15, 2035	40,000		40,000
2.49% notes Due January 25, 2037	50,000		50,000
2.95% notes Due March 15, 2042	50,000		—
Equipment security note
2.46% note, due September 24, 2031	8,517		9,378
Less: debt issuance costs	(946)		(913)
Total long-term debt	599,871		567,865
Less: current maturities	(21,483)		(17,962)
Total long-term debt, net of current maturities	$	578,388	$	549,903

Annual maturities and principal repayments of long-term debt are as follows:

The following table summarizes our shelf agreements at December 31, 2022:


(in thousands)	Total Borrowing Capacity		Less Amount of Debt Issued		Less Unfunded Commitments		Remaining Borrowing Capacity
Shelf Agreements (1)
Prudential Shelf Agreement (2)	$	370,000	$	(220,000)	$	(80,000)	$	70,000
MetLife Shelf Agreement	150,000		(50,000)		—		100,000
Total	$	520,000	$	(270,000)	$	(80,000)	$	170,000

(1) The amended Prudential and MetLife Shelf Agreements both expire in February 2026.

(2) Unfunded commitments of $80.0 million reflects Senior Notes expected to be issued on or before March 14, 2023.