Interest on the revolving line of credit and Term Loan A is accrued at a rate equal to (i) the monthly LIBOR rate plus an applicable margin or, (ii) a base rate that is the highest of the U.S. prime rate, federal funds rate (plus ½ of 1 percent) and LIBOR (plus 1 percent), at our option. The applicable margin is adjusted quarterly based on our leverage ratio. At September 30, 2019, the applicable margin was 2.50 percent for LIBOR loans and 1.50 percent for base rate loans. Interest on the Term Loan B is accrued similarly to Term Loan A, except the applicable margin is fixed at 4.50 percent for LIBOR loans and 3.50 percent for base rate loans. The Term Loan A and Term Loan B interest rates were 4.55 percent and 6.55 percent, respectively, at September 30, 2019 and 4.78 percent and 7.03 percent, respectively, at December 31, 2018. The interest rate on the revolving line of credit was 4.55 percent and 5.19 percent at September 30, 2019 and December 31, 2018, respectively. We are charged a monthly unused commitment fee ranging from 0.3 percent to 0.4 percent on the average unused daily balance on our $200,000 revolving line of credit.
Our weighted average borrowings on the revolving line of credit was $137,521 and $163,380 and maximum borrowings on the revolving line of credit was $196,300 and $231,200 during the nine months ended September 30, 2019 and 2018, respectively. We had $95,000 and $73,700 available borrowing capacity on our revolving line of credit at September 30, 2019 and December 31, 2018, respectively. We had $455,875 and $464,500 in outstanding term loans as of September 30, 2019 and December 31, 2018, respectively. We also had $105,000 and $176,300 outstanding on our revolving line of credit as of September 30, 2019 and December 31, 2018, respectively.
The Term Loan A and Term Loan B requires quarterly principal payments of $1,875 and $1,000, plus accrued interest, respectively. During 2018, the Company made a voluntary prepayment of $74,000 on the Term Loan B.
Our credit facility contains certain financial and non-financial covenants, including covenants imposing (i) a maximum total net leverage ratio and (ii) a minimum interest coverage ratio limiting the amount of debt that the Company may have outstanding. Effective August 9, 2019, the Company amended its credit agreement and revised the total net leverage ratio covenant which is now set at 6.00 to 1.0 as of September 30, 2019, stepping up to 6.75 to 1.0 as of December 31, 2019 through March 31, 2020, with subsequent step downs thereafter to the ratios as originally issued. The minimum interest coverage ratio was also revised concurrently and set at 2.50 to 1.0 as of September 30, 2019, stepping down to 2.25 to 1.0 as of December 31, 2019 through March 31, 2020, and eventually stepping back up to 3.00 to 1.0 as of March 31, 2021 and thereafter. In order to effect the amendment, the Company permanently reduced its revolving line of credit from $250,000 to $200,000. In addition, the amendment to the credit agreement contained certain covenant trigger events that include: investments in or loans to non-guarantor parties, the incurrence of certain indebtedness, the creation of unrestricted subsidiaries and the making of certain distributions or prepayment of indebtedness, and failure to deliver quarterly projected financial statements and require the use of net cash proceeds realized from certain assets dispositions to prepay term loans. Should a covenant trigger event occur, the total net leverage ratio covenant level shall be reduced by 3.00 to 1.00 and the interest coverage ratio level will be increased by 3.00 to 1.00. As of September 30, 2019, the Company is in compliance with all such covenants. Although the Company was in compliance with its financial debt covenants at September 30, 2019, it was in compliance due to the modification of the financial debt covenants that became effective in August 2019. Management believes it is probable that the Company will be in violation of the less restrictive covenants at December 31, 2019. Therefore, the Company has classified the outstanding balances under Term Loan A and Term Loan B as of September 30, 2019 as current in the condensed consolidated balance sheet.
Based on our results for 2019 and future forecasts, however, the Company may breach its debt covenants for the period ending December 31, 2019. Despite this potential breach, the Company expects to continue to service its debt and other trade obligations in the ordinary course. Furthermore, the Company plans to alleviate the issues related to its debt covenants through the execution of strategic alternatives, actively working with its lenders to renegotiate its covenants or restructure its credit agreement, as appropriate, and continuing to pursue cost-cutting initiatives. While the Company currently believes that these actions should be completed prior to breaching the debt covenants and, if completed, could successfully mitigate the conditions that would give rise to the potential breach of its debt covenants, the execution of these plans is reliant upon third-parties and, therefore, outside the control of the Company, it cannot be considered probable that management will be able to effectively implement its plans and avoid the potential breach of its debt covenants. See “Liquidity and Capital Resources—Overview” for additional information.