2020, including that we maintain a tangible net worth of at least $120,000,000 and that we maintain a ratio of debt to EBITDA of 4-to-1, or less.
Veritex Community Bank Revolver. In April 2016, we entered into an agreement with Veritex Community Bank to secure an additional revolving line of credit of $15,000,000 (“Revolver 2”). Revolver 2 accrues interest at one month LIBOR plus 2.50% and all unpaid principal and interest is due at maturity on April 4, 2021. Revolver 2 is secured by all finished goods inventory excluding repossessed homes. Amounts available under Revolver 2 are subject to a formula based on eligible inventory. The interest rates in effect as of March 31, 2020 and December 31, 2019 was 4.17% and 4.19%, respectively. On May 12, 2017, we entered into an agreement to increase the maximum borrowing availability under Revolver 2 to $20,000,000. On October 15, 2018, Revolver 2 was amended to extend the maturity date from April 4, 2019 to April 4, 2021. The amount of available credit under Revolver 2 was $12,028,000 and $11,262,000 at March 31, 2020 and December 31, 2019, respectively. For the nine months ended September 30, 2020 and 2019, interest expense was $17,000 and $111,000, respectively. The outstanding balance as of March 31, 2020 and December 31, 2019 was $2,001,000. We were in compliance with all financial covenants as of March 31, 2020, including that we maintain a tangible net worth of at least $80,000,000. In April 2020, this note was paid in full and the facility was terminated.
PPP Loan. On April 10, 2020, we Company entered into a loan with Peoples Bank as the lender in an aggregate principal amount of $6,545,700 (the “Loan”) pursuant to the Paycheck Protection Program under the Coronavirus Aid, Relief, and Economic Security Act. The Loan was evidenced by a promissory note (the “Note”) dated April 10, 2020 and had a maturity date of April 10, 2022. The Note had an interest rate of 1.000% per annum, with the first six months of interest deferred. Principal and interest were payable monthly commencing on November 10, 2020 and could be prepaid by us at any time prior to maturity with no prepayment penalties. On May 1, 2020, this loan was paid in full.
Notes Payable. We have a promissory note with Woodhaven Bank. The amount due under the promissory note accrued interest at an annual rate of 3.85% through February 2, 2017 and then at the prime interest rate plus 0.60% through maturity on April 7, 2018. The loan was subsequently renewed through April 7, 2033. The promissory note calls for an interest rate of 4.25% and monthly payments of $30,000 with a final payment due at maturity. The note is secured by certain of our real property. Interest expense was $113,000 for the nine months ended September 30, 2019. In October 2019, this note was paid in full.
On May 24, 2016, we signed a promissory note for $515,000 with Eagle One, LLC collateralized by the purchase of real property located in Oklahoma City, Oklahoma. The amount due under the promissory note accrues interest at an annual rate of 6.00%. The promissory note calls for monthly principal and interest payments of $6,000 until June 1, 2026. Interest expense was $1,000 for the nine months ended September 30, 2019. In January 2019, this note was paid in full.
PILOT Agreement. In December 2016, we entered into a Payment in Lieu of Taxes (“PILOT”) agreement commonly offered in Georgia by local community development programs to encourage industry development. The net effect of the PILOT agreement is to provide us with incentives through the abatement of local, city and county property taxes and to provide financing for improvements to our Georgia plant (the “Project”). In connection with the PILOT agreement, the Putman County Development Authority provides a credit facility for up to $10,000,000, which can be drawn upon to fund Project improvements and capital expenditures as defined in the agreement. If funds are drawn, we would pay transactions costs and debt service payments. The PILOT agreement requires interest payments of 6.00% per annum on outstanding balances, which are due each December 1 through maturity on December 1, 2021, at which time all unpaid principal and interest are due. The PILOT agreement is collateralized by the assets of the Project. As of September 30, 2020, we had not drawn down on this credit facility.