Long-term debt of the Company at December 31, 2019 and 2018 is summarized as follows:

	2019			2018
Revolving line of credit	$	149,300		$	97,400
Less debt issuance costs		(534	)		(729	)
	$	148,766		$	96,671

Principal payments on long-term debt at December 31, 2019 of $149,300 are due in 2022.

As of June 30, 2017, AMVAC Chemical Corporation (“AMVAC”), the Company’s principal operating subsidiary, as borrower, and affiliates (including the Company, AMVAC CV and AMVAC BV), as guarantors and/or borrowers, entered into a Third Amendment to Second Amended and Restated Credit Agreement with a group of commercial lenders led by Bank of the West as agent, swing line lender and Letter of Credit issuer. As of November 27, 2019, AMVAC, as borrower and certain affiliates, on the one hand, entered into a Fourth Amendment to Second Amended and Restated Credit Agreement with a group of commercial lenders led by Bank of the West as agent, swing line lender and Letter of Credit under the terms of which the maximum limits for both Permitted Acquisitions and Investments in Foreign Subsidiaries were increased and new language was added with respect to Eurocurrency Rates, LIBOR Rates and ERISA. The Third and Fourth Amendments, taken together, constitute the Credit Agreement.

The Credit Agreement is a senior secured lending facility, consisting of a line of credit of up to $250,000, an accordion feature of up to $100,000 and a maturity date of June 30, 2022. The Credit Agreement contains two key financial covenants; namely, borrowers are required to maintain a Consolidated Funded Debt Ratio of no more than 3.25-to-1 and a Consolidated Fixed Charge Covenant Ratio of at least 1.25-to-1. The Company’s borrowing capacity varies with its financial performance, measured in terms of EBITDA as defined in the Credit Agreement, for the trailing twelve-month period. Under the Credit Agreement, revolving loans bear interest at a variable rate based, at borrower’s election with proper notice, on either (i) LIBOR plus the “Applicable Rate” which is based upon the Consolidated Funded Debt Ratio (“Eurocurrency Rate Loan”) or (ii) the greater of (x) the Prime Rate, (y) the Federal Funds Rate plus 0.5%, and (z) the Daily One-Month LIBOR Rate plus 1.00%, plus, in the case of (x), (y) or (z) the Applicable Rate (“Alternate Base Rate Loan”). Interest payments for Eurocurrency Rate Loans are payable on the last day of each interest period (either one, two, three or six months, as selected by the borrower) and the maturity date, while interest payments for Alternate Base Rate Loans are payable on the last business day of each month and the maturity date. The interest rate on December 31, 2019 was 3.74%.

At December 31, 2019, according to the terms of the Credit Agreement and based on our performance against the most restrictive covenant listed above, the Company had the capacity to increase its borrowings by up to $26,977. This compares to an available borrowing capacity of $112,150 as of December 31, 2018. The level of borrowing capacity is driven by three factors: (1) our financial performance, as measured in EBITDA for trailing twelve-month period, (2) the inclusion of proforma EBITDA related to acquisitions completed during the preceding twelve months and (3) the leverage covenant (being the number of times EBITDA the Company may borrow under its credit facility agreement). The Company was in compliance with all the debt covenants as of December 31, 2019.

Substantially all of the Company’s assets are pledged as collateral under the Credit Agreement.