QL, as the borrower, and QLH, as the guarantor, entered into a new secured credit facility on February 26, 2019 with Monroe Capital. The credit facility was comprised of (a) a term loan in an initial principal amount of $100.0 million (“2019 Term Loan Facility”) and (b) a revolving line of credit of up to $5.0 million (“2019 Revolving Credit Facility” and, collectively with the 2019 Term Loan Facility, the “2019 Credit Facilities”). Proceeds from the $100.0 million 2019 Term Loan Facility were used to (i) repay the 2017 Term Loan Facility in full, (ii) pay a cash dividend to QLH Class A Unit Holders and certain QLH Class B Unit Holders, (iii) pay transaction expenses, and (iv) fund the redemption of certain QLH Class A and Class B Unit Holders for cash.

On June 12, 2019, QL, as the borrower, and QLH as the guarantor, executed an amendment to the 2019 Credit Facilities to bring City National Bank on as a lender. Monroe Capital assigned $25.0 million of the 2019 Term Loan Facility and the entire $5.0 million of the 2019 Revolving Credit Facility to City National Bank. In connection with the assignment of the debt, the applicable margin on borrowings was reduced from LIBOR plus 5.50% to LIBOR plus 4.85% and the Company incurred $0.2 million of debt issuance costs. This amendment was accounted for as a modification to the 2019 Credit Facilities.

As of December 31, 2019, the Company had no outstanding amount drawn on the 2019 Revolving Credit Facility and $97.5 million outstanding, net of deferred debt issuance costs of $1.7 million, on the 2019 Term Loan Facility, of which $0.9 million was classified within current portion of long-term debt and $96.7 million was classified within long-term debt, net of current portion.

On September 23, 2020, the Company entered into a new senior secured credit facility (“2020 Credit Facilities”) with a syndicate of banks and financial institutions, comprising of (a) $210.0 million term loan (“2020 Term Loan Facility”), which was fully drawn at close and (b) a revolving line of credit of $5.0 million (“2020 Revolving Credit Facility”), which was undrawn at close. Proceeds from the $210.0 million term loan were used to (i) repay the 2019 Term Loan Facilities in full, (ii) pay a $105.8 million cash distribution to QLH Class A Unit Holders and certain QLH Class B Unit Holders, and (iii) pay related transaction expenses.

The 2020 Credit Facilities are collateralized by substantially all of the Company’s assets and contain certain financial and non-financial covenants. The financial covenants include a minimum Fixed Charge Coverage Ratio and a maximum Total Net Leverage Ratio (in each case, as defined in the 2020 Credit Facilities). Non-financial covenants include restrictions on investments, dividends, asset sales, and the incurrence of additional debt and liens.

The 2020 Credit Facilities have a maturity date of September 22, 2023, subject to an extension of the termination date, at which time all outstanding borrowings and accrued interest are due. Under the 2020 Term Loan Facility, principal repayments of $2.625 million are made quarterly, due on the first business day following the last day of each March, June, September and December, beginning with December 31, 2020. Additionally, the 2020 Term Loan Facility requires a mandatory debt repayment based on an excess cash flow calculation performed annually. The percentage of excess cash flow to be repaid declines based on the Consolidated Total Net Leverage Ratio.

As of September 30, 2020, the Company had no outstanding amount drawn on the 2020 Revolving Credit Facility and $205.4 million outstanding on the 2020 Term Loan Facility, net of new deferred debt issuance costs of $4.3 million and $0.3 million of unamortized deferred financing costs on the portion of the 2019 Credit Facilities accounted for as a partial modification, of which $1.6 million was classified within current portion of long-term debt and $3.0 million was classified within long-term debt, net of current portion. Additionally, during the three and nine months ended September 30, 2020, the Company recognized a loss on extinguishment of the 2019 Credit Facilities of $2.0 million, which has been recorded within other expense.

The 2020 Credit Facilities bear interest at a rate equal to LIBOR plus an applicable margin on borrowings. The expected future principal payments for all borrowings as of September 30, 2020 is as follows (in thousands):

	Contractual maturity
Nine Months Ended September 30,
2020–Remaining Period	$	2,625
2021		10,500
2022		10,500
2023		186,375
Debt and issuance costs		210,000
Unamortized debt issuance costs		(4,592	)
Total long-term debt		205,408

The Company incurred interest expense of $1.6 million and $4.8 million, and $1.9 million and $5.3 million during the three and nine months ended September 30, 2020 and 2019, respectively. Included in interest expense is $0.1 million and $0.3 million, and $0.1 million and $0.6 million of amortization of debt issuance costs during the three months and nine months ended September 30, 2020 and 2019, respectively. As of September 30, 2020, unamortized deferred debt issuance costs amounted to $4.6 million and $1.8 million as of September 30, 2019. Accrued interest was less than $0.1 million as of September 30, 2020 and 2019, respectively.