Debt

Long-term debt consists of the following at August 31:



	2017			2016
Class A-2 2016-1 senior secured fixed rate notes	$	422,521		$	423,938
Class A-1 2016-1 senior secured variable funding notes	60,000			—
Class A-2 2013-1 senior secured fixed rate notes	155,000			155,000
	637,521			578,938
Less unamortized debt issuance costs	(9,405		)	(11,334		)
Less long-term debt due within one year	—			(1,417		)
Long-term debt due after one year	$	628,116		$	566,187

At August 31, 2017, there were no future maturities of long-term debt for fiscal years 2018 and 2019, $155.0 million for fiscal year 2020, $60.0 million for fiscal year 2021 and no maturities for fiscal year 2022.

During fiscal year 2013, in a private transaction, various subsidiaries of the Company (the “Co-Issuers”) refinanced and paid $155.0 million of the Series 2011 Senior Secured Fixed Rate Notes, Class A-2 (the “2011 Fixed Rate Notes”) with the issuance of $155.0 million of Series 2013-1 Senior Secured Fixed Rate Notes, Class A-2 (the “2013 Fixed Rate Notes”), which bear interest at 3.75% per annum. The 2013 Fixed Rate Notes have an expected life of seven years, interest payable monthly, no scheduled principal amortization and an anticipated repayment date in July 2020.

On May 17, 2016, in a private transaction, the Co-Issuers issued $425.0 million of Series 2016-1 Senior Secured Fixed Rate Notes, Class A-2 (the “2016 Fixed Rate Notes”), which bear interest at 4.47% per annum. The 2016 Fixed Rate Notes have an expected life of seven years with an anticipated repayment date in May 2023.

The Co-Issuers also entered into a securitized financing facility of Series 2016-1 Senior Secured Variable Funding Notes, Class A-1 (the “2016 Variable Funding Notes” and, together with the 2016 Fixed Rate Notes, the “2016 Notes”) to replace the Series 2011-1 Senior Secured Variable Funding Notes, Class A-1 (the “2011 Variable Funding Notes”). The 2016 revolving credit facility provides access to a maximum of $150.0 million of 2016 Variable Funding Notes and certain other credit instruments, including letters of credit. Interest on the 2016 Variable Funding Notes is based on the one-month London Interbank Offered Rate or Commercial Paper, depending on the funding source, plus 2.0%, per annum. An annual commitment fee of 0.5% is payable monthly on the unused portion of the 2016 Variable Funding Notes facility. The 2016 Variable Funding Notes have an expected life of five years with an anticipated repayment date in May 2021 with two one-year extension options available upon certain conditions including meeting a minimum debt service coverage ratio threshold.

Sonic used a portion of the net proceeds from the issuance of the 2016 Fixed Rate Notes to repay its existing 2011 Fixed Rate Notes and 2011 Variable Funding Notes in full and to pay the costs associated with the securitized financing transaction, including prepayment premiums.

Loan origination costs associated with the Company’s 2016 transaction totaled $12.5 million and were allocated among the 2016 Notes. Loan costs are being amortized over each note's expected life, and the unamortized balance related to the 2016 Variable Funding Notes and the 2016 Fixed Rate Notes is included in other current assets and long-term debt, net, respectively, on the consolidated balance sheets.

In connection with the 2016 transaction described above, the Company recognized an $8.8 million loss from the early extinguishment of debt during the third quarter of fiscal year 2016, which primarily consisted of a $5.9 million prepayment premium and the $2.9 million write-off of unamortized deferred loan fees remaining from the refinanced debt.

As of August 31, 2017, the weighted-average interest cost of the 2013 Fixed Rate Notes and the 2016 Fixed Rate Notes was 4.1% and 4.8%, respectively. The weighted-average interest cost of the 2016 Variable Funding Notes 3.2%. The weighted-average interest cost includes the effect of the loan origination costs.

While the 2013 Fixed Rate Notes and the 2016 Fixed Rate Notes are structured to provide for seven-year lives from their original issuance dates, they have legal final maturity dates of July 2043 and May 2046, respectively. The 2016 Variable Funding Notes are structured to provide for a five-year life with two one-year options available under certain conditions and with a legal final maturity date of May 2046. The Company intends to repay or refinance the 2013 Fixed Rate Notes and the 2016 Notes on or before the end of their expected lives. If the Company prepays the debt prior to the anticipated repayment date the Company may be required to pay a prepayment penalty under certain circumstances. In the event the 2013 Fixed Rate Notes and the 2016 Notes are not paid in full by the end of their expected lives, they are subject to an upward adjustment in the annual interest rate of at least 5%. In addition, principal payments will accelerate by applying all of the royalties, lease revenues and other fees securing the debt, after deducting certain expenses, until the debt is paid in full. Also, any unfunded amount under the 2016 Variable Funding Notes will become unavailable.

The Co-Issuers and Sonic Franchising LLC (the “Guarantor”) are existing special purpose, bankruptcy remote, indirect subsidiaries of Sonic Corp. that hold substantially all of Sonic's franchising assets and real estate. As of August 31, 2017, assets for these combined indirect subsidiaries totaled $287.2 million, including receivables for royalties, certain Company and Franchise Drive-In real estate, intangible assets and restricted cash balances of $61.9 million. The 2013 Fixed Rate Notes and the 2016 Notes are secured by franchise fees, royalty payments and lease payments, and the repayment of the 2013 Fixed Rate Notes and the 2016 Notes is expected to be made solely from the income derived from the Co-Issuer's assets. In addition, the Guarantor, a Sonic Corp. subsidiary that acts as a franchisor, has guaranteed the obligations of the Co-Issuers under the 2013 Fixed Rate Notes and the 2016 Notes and pledged substantially all of its assets to secure those obligations.

Neither Sonic Corp., the ultimate parent of the Co-Issuers and the Guarantor, nor any other subsidiary of Sonic Corp., guarantees or is in any way liable for the obligations of the Co-Issuers under the 2013 Fixed Rate Notes and the 2016 Notes. The Company has, however, agreed to cause the performance of certain obligations of its subsidiaries, principally related to managing the assets included as collateral for the 2013 Fixed Rate Notes and the 2016 Notes and certain indemnity obligations relating to the transfer of the collateral assets to the Co-Issuers.

The 2013 Fixed Rate Notes and the 2016 Notes are subject to a series of covenants and restrictions customary for transactions of this type, including (i) required actions to better secure collateral upon the occurrence of certain performance-related events, (ii) application of certain disposition proceeds as note prepayments after a set time is allowed for reinvestment, (iii) maintenance of specified reserve accounts, (iv) maintenance of certain debt service coverage ratios, (v) optional and mandatory prepayments upon change in control, (vi) indemnification payments for defective or ineffective collateral, and (vii) covenants relating to recordkeeping, access to information and similar matters. If certain covenants or restrictions are not met, the 2013 Fixed Rate Notes and the 2016 Notes are subject to customary accelerated repayment events and events of default. Although management does not anticipate an event of default or any other event of noncompliance with the provisions of the debt, if such event occurred, the unpaid amounts outstanding could become immediately due and payable.