	June 30,			December 31,
	2020			2019
	(In Thousands)
Working Capital Revolver Loan, with a current interest rate of 4.00% (A)	$	30,000		$	—
Senior Secured Notes due 2023 (B)		435,000			435,000
Secured Promissory Note due 2021, with an interest rate of 5.25% (C)		3,007			4,746
Unsecured Loan Agreement due 2022, with an interest rate of 1.00% (D)		10,000			—
Secured Promissory Note due 2023, with a current interest rate of 4.43% (E)		11,715			12,705
Secured Financing due 2023, with an interest rate of 8.32% (F)		12,120			13,476
Secured Loan Agreement due 2025, with an interest rate of 8.75% (G)		7,481			5,219
Other		141			159
Unamortized discount, net of premium and debt issuance costs		(10,420	)		(12,261	)
		499,044			459,044
Less current portion of long-term debt		11,492			9,410
Long-term debt due after one year, net	$	487,552		$	449,634

(A) Our revolving credit facility (the “Working Capital Revolver Loan”), as amended, provides for advances up to $65 million (the “Maximum Revolver Amount”), based on specific percentages of eligible accounts receivable and inventories and up to $10 million of letters of credit, the outstanding amount of which reduces the available for borrowing under the Working Capital Revolver Loan. At June 30, 2020, our available borrowings under our Working Capital Revolver Loan were approximately $12.6 million, based on our eligible collateral, less outstanding letters of credit and loan balance. The maturity date of the Working Capital Revolver Loan is on the earlier of (i) the date that is 90 days prior to the earliest stated maturity date of the Senior Secured Notes (unless refinanced or repaid) and (ii) February 26, 2024. Subject to certain conditions and subject to lender approval, the Maximum Revolver Amount may increase up to an additional $10 million, less the outstanding aggregate principal amount of the unforgiven portion (as defined in the agreement) of the PPP loan discussed below within footnote (D). The Working Capital Revolver Loan also provides for a springing financial covenant (the “Financial Covenant”), which requires that, if the borrowing availability is less than 10.0% of the total revolver commitments, then the borrowers must maintain a minimum fixed charge coverage ratio of not less than 1.00 to 1.00. The Financial Covenant, if triggered, is tested monthly.

(B) On April 25, 2018, LSB completed the issuance and sale of $400 million aggregate principal amount of its 9.625% Senior Secured Notes due 2023 (the “Notes”), pursuant to an indenture (the “Indenture”), dated as of April 25, 2018. The Notes were issued at a price equal to 99.509% of their face value.

On June 21, 2019, LSB completed the issuance and sale of $35 million aggregate principal amount of its 9.625% Senior Secured Notes due 2023 (the “New Notes”). The New Notes were issued pursuant to the Indenture (the Notes together with the New Notes, the “Senior Secured Notes”). The New Notes were issued at a price equal to 102.125% of their face value, plus accrued interest from May 1, 2019 to June 21, 2019.

The Senior Secured Notes mature on May 1, 2023. Interest is to be paid semiannually in arrears on May 1^st and November 1^st.

(C) EDC is party to a secured promissory note due in March 2021. Principal and interest are payable in monthly installments.

(D) In April 2020, LSB entered into a federally guaranteed loan agreement (“PPP loan”) for $10 million with a lender pursuant to a new loan program through the U.S. Small Business Administration (“SBA”) as the result of the Paycheck Protection Program (“PPP”) established by the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act and amended by the Paycheck Protection Program Flexibility Act of 2020. We applied ASC 470, Debt, to account for the PPP loan. We plan to use most, if not all, of the proceeds from the PPP loan for payroll, rent, utilities, and other specified costs that qualify for loan forgiveness. Under the current terms of the PPP loan, loan forgiveness applications are due within 10 months after the end of the loan forgiveness covered period which period began on the date the PPP loan was disbursed and ends either 8-weeks or 24-weeks after disbursement of the loan. Once the SBA notifies the lender the amount of approved loan forgiveness, the lender will determine the date that the equal monthly principal and interest payments will begin for the remaining loan balance, if any. Currently the loan matures in April 2022 which term may be extended to April 2025 if mutually agreed to by the parties. As for the potential loan forgiveness, once the PPP loan is, in part or wholly, forgiven and a legal release is received, the liability would be reduced by the amount forgiven and a gain on extinguishment would be recorded.

(E) El Dorado Ammonia L.L.C. (“EDA”), one of our subsidiaries, is party to a secured promissory note due in May 2023. Principal and interest are payable in equal monthly installments with a final balloon payment of approximately $6.1 million.

(F) EDC is party to a secured financing arrangement with an affiliate of LSB Funding L.L.C. (“LSB Funding”). Principal and interest are payable in 48 equal monthly installments with a final balloon payment of approximately $3 million due in June 2023.

(G) EDC is party to a secured loan agreement with an affiliate of LSB Funding, which provided for available borrowings (the “Interim Loan”) during the construction of certain equipment (the “Interim Loan Period”), subject to certain conditions. During the Interim Loan Period, interest only was payable in monthly installments. Effective February 28, 2020, the Interim Loan Period ended, and the Interim Loan was replaced by a secured promissory note due in March 2025. Under the terms of the note, principal and interest are payable in 60 equal monthly installments.