Long-term debt consisted of borrowings outstanding under the Company’s revolving credit facility and accounts receivable securitization program, both of which are further described in Financing Arrangements within this Note, and notes payable and finance lease obligations related to the financing of revenue equipment (tractors and trailers used primarily in Asset-Based segment operations), certain other equipment, and software as follows:

(1)

The interest rate swap mitigates interest rate risk by effectively converting $50.0 million of borrowings under the Credit Facility from variable-rate interest to fixed-rate interest with a per annum rate of 2.98% and 3.10% based on the margin of the Credit Facility as of December 31, 2019 and 2018, respectively.

Scheduled maturities of long-term debt obligations as of December 31, 2019 were as follows:


					Accounts
					Receivable
			Credit		Securitization		Notes		Finance Lease
	Total		Facility⁽¹⁾		Program⁽¹⁾		Payable		Obligations
	(in thousands)
2020	$	66,398	$	1,947	$	1,021	$	63,423	$	7
2021		102,230		1,845		40,719		59,659		7
2022		52,850		1,885		—		50,964		1
2023		37,030		1,966		—		35,064		—
2024		90,084		71,515		—		18,569		—
Thereafter		203		—		—		203		—
Total payments		348,795		79,158		41,740		227,882		15
Less amounts representing interest		25,276		9,158		1,740		14,378		—
Long-term debt	$	323,519	$	70,000	$	40,000	$	213,504	$	15

(1)	The future interest payments included in the scheduled maturities due are calculated using variable interest rates based on the LIBOR swap curve, plus the anticipated applicable margin.

Assets securing notes payable or held under finance leases at December 31 were included in property, plant and equipment as follows:


	2019		2018
	(in thousands)
Revenue equipment	$	265,315	$	264,396
Land and structures (service centers)		—		1,794
Software		2,140		1,484
Service, office, and other equipment		26,344		5,941
Total assets securing notes payable or held under finance leases		293,799		273,615
Less accumulated depreciation and amortization⁽¹⁾		71,405		79,961
Net assets securing notes payable or held under finance leases	$	222,394	$	193,654

(1)	Amortization of assets held under finance leases and depreciation of assets securing notes payable are included in depreciation expense.

The Company’s long-term debt obligations have a weighted-average interest rate of 3.1% at December 31, 2019. The Company paid interest of $10.9 million, $8.7 million, and $5.8 million in 2019, 2018, and 2017, respectively, net of capitalized interest which totaled $0.2 million, $0.2 million, and $0.9 million for 2019, 2018 and 2017, respectively.

Financing Arrangements

Credit Facility

The Company has a revolving credit facility (the “Credit Facility”) under its Third Amended and Restated Credit Agreement which was amended and restated in September 2019 (the “Credit Agreement”) to increase the initial maximum credit amount from $200.0 million to $250.0 million, including a swing line facility of an aggregate amount of up to $25.0 million and a letter of credit sub-facility providing for the issuance of letters of credit up to an aggregate amount of $20.0 million. The Company’s option to request additional revolving commitments or incremental term loans thereunder increased from $100.0 million to $125.0 million, subject to certain additional conditions as provided in the Credit Agreement. As of December 31, 2019, the Company had available borrowing capacity of $180.0 million under the initial maximum credit amount of the Credit Facility.

Principal payments under the Credit Facility are due upon maturity of the facility on October 1, 2024; however, borrowings may be repaid, at the Company’s discretion, in whole or in part at any time, without penalty, subject to required notice periods and compliance with minimum prepayment amounts. Borrowings under the Credit Agreement can either be, at the Company’s election: (i) at an Alternate Base Rate (as defined in the Credit Agreement) plus a spread; or (ii) at a Eurodollar Rate (as defined in the Credit Agreement) plus a spread. The applicable spread is dependent upon the Company’s Adjusted Leverage Ratio (as defined in the Credit Agreement). The Credit Agreement contains conditions, representations and warranties, events of default, and indemnification provisions that are customary for financings of this type, including, but not limited to, a minimum interest coverage ratio, a maximum adjusted leverage ratio, and limitations on incurrence of debt, investments, liens on assets, certain sale and leaseback transactions, transactions with affiliates, mergers, consolidations, purchases and sales of assets, and certain restricted payments. The Company was in compliance with the covenants under the Credit Agreement at December 31, 2019.

Interest Rate Swaps

The Company has a five-year interest rate swap agreement with a $50.0 million notional amount maturing on January 2, 2020. The Company receives floating-rate interest amounts based on one-month LIBOR in exchange for fixed-rate interest payments of 1.85% over the life of the agreement. The interest rate swap mitigates interest rate risk by effectively converting $50.0 million of borrowings under the Credit Facility from variable-rate interest to fixed-rate interest with a per annum rate of 2.98% based on the margin of the Credit Facility as of December 31, 2019. The fair value of the interest rate swap of less than $0.1 million was recorded in other long-term liabilities in the consolidated balance sheet at December 31, 2019. At December 31, 2018, the fair value of the interest rate swap of $0.3 million was recorded in other long-term assets in the consolidated balance.

In June 2017, the Company entered into a forward-starting interest rate swap agreement with a $50.0 million notional amount beginning on January 2, 2020 upon maturity of the current interest rate swap agreement, and mature on June 30, 2022. The Company will receive floating-rate interest amounts based on one-month LIBOR in exchange for fixed-rate interest payments of 1.99% over the life of the agreement. The interest rate swap mitigates interest rate risk by effectively converting $50.0 million of borrowings under the Credit Facility from variable-rate interest to fixed-rate interest with a per annum rate of 3.12% based on the margin of the Credit Facility as of December 31, 2019. The fair value of the interest rate swap of $0.6 million was recorded in other long-term liabilities in the consolidated balance sheet at December 31, 2019. At December 31, 2018, the fair value of the interest rate swap of $0.5 million was recorded in other long-term assets in the consolidated balance.

The unrealized gain or loss on the interest rate swap instruments was reported as a component of accumulated other comprehensive loss, net of tax, in stockholders’ equity at December 31, 2019 and 2018, and the change in the unrealized income on the interest rate swaps for the years ended December 31, 2019 and 2018 was reported in other comprehensive income, net of tax, in the consolidated statements of comprehensive income. The interest rate swaps are subject to certain customary provisions that could allow the counterparty to request immediate settlement of the fair value liability or asset upon violation of any or all of the provisions. The Company was in compliance with all provisions of the interest rate swap agreements at December 31, 2019.

Accounts Receivable Securitization Program

The Company’s accounts receivable securitization program, which matures on October 1, 2021, allows for cash proceeds of $125.0 million to be provided under the program and has an accordion feature allowing the Company to request additional borrowings up to $25.0 million, subject to certain conditions. Under this program, certain subsidiaries of the Company continuously sell a designated pool of trade accounts receivables to a wholly owned subsidiary which, in turn, may borrow funds on a revolving basis. This wholly owned consolidated subsidiary is a separate bankruptcy-remote entity, and its assets would be available only to satisfy the claims related to the lender’s interest in the trade accounts receivables. Borrowings under the accounts receivable securitization program bear interest based upon LIBOR, plus a margin, and an annual facility fee. The securitization agreement contains representations and warranties, affirmative and negative covenants, and events of default that are customary for financings of this type, including a maximum adjusted leverage ratio covenant. As of December 31, 2019 and 2018, $40.0 million was borrowed under the program. The Company was in compliance with the covenants under the accounts receivable securitization program as of December 31, 2019.

The accounts receivable securitization program includes a provision under which the Company may request and the letter of credit issuer may issue standby letters of credit, primarily in support of workers’ compensation and third-party casualty claims liabilities in various states in which the Company is self-insured. The outstanding standby letters of credit reduce the availability of borrowings under the program. As of December 31, 2019, standby letters of credit of $12.2 million have been issued under the program, which reduced the available borrowing capacity to $72.8 million.

Letter of Credit Agreements and Surety Bond Programs

As of December 31, 2019 and 2018, the Company had letters of credit outstanding of $12.8 million and $17.2 million, respectively, (including $12.2 million and $16.6 million, respectively, issued under the accounts receivable securitization program). The Company has programs in place with multiple surety companies for the issuance of surety bonds in support of its self-insurance program. As of December 31, 2019 and 2018, surety bonds outstanding related to the self-insurance program totaled $62.3 million and $49.1 million, respectively.

Notes Payable

The Company has financed the purchase of certain revenue equipment, other equipment, and software through promissory note arrangements, including $90.8 million, $94.0 million, and $84.2 million for revenue equipment and other equipment during the year ended December 31, 2019, 2018, and 2017, respectively.