(2) Long-Term Debt

Long-term debt of the Company at December 31, 2017 and 2016 is summarized as follows:

	2017			2016
Revolving line of credit(a)	$	78,425		$	41,400
Less debt issuance costs		(939	)		(449	)
	$	77,486		$	40,951

Principal payments on long-term debt at December 31, 2017 of $78,425 are due in 2022.

As of June 30, 2017, 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 (the “Credit Agreement”) with a group of commercial lenders led by Bank of the West (AMVAC’s primary bank) as agent, swing line lender and Letter of Credit (“L/C”) issuer. 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, 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.

At December 31, 2017, according to the terms of the Credit Agreement and based on our performance against the most restrictive covenants listed above, the Company had the capacity to increase its borrowings by up to $139,241. This compares to an available borrowing capacity of $104,853 as of December 31, 2016. The level of borrowing capacity is driven by three factors: (1) our financial performance, as measured in EBITDA for trailing twelve month period, which has improved, (2) the inclusion of proforma EBITDA related to acquisitions completed during 2017 and (3) the leverage covenant (being the number of times EBITDA the Company may borrow under its credit facility agreement).

Substantially all of the Company’s assets are pledged as collateral under the Credit Agreement. The Company was in compliance with all its debt covenants as of December 31, 2017.

The Company has various loans in place that together constitute the loan balances shown in the consolidated balance sheets at December 31, 2017 and December 31, 2016. The average amount outstanding on the senior secured revolving line of credit during the years ended December 31, 2017 and 2016 was $51,103 and $59,897, respectively. The weighted average interest rate on the revolving credit line during the years ended December 31, 2017, 2016, and 2015 was 3.0%, 2.3%, and 2.1% respectively.