Long-Term Debt

Long-term debt consisted of the following (in thousands):



	September 30,
	2019			2018
Industrial development revenue bonds	$	1,200		$	1,600
Less: current portion	(400		)	(400		)
Total long-term debt	$	800		$	1,200

The annual maturities of long-term debt as of September 30, 2019, were as follows (in thousands):



Year Ending September 30,	Long‑Term Debt Maturities
2020	$	400
2021	400
2022	—
2023	—
2024	—
Total long-term debt maturities	$	800

U.S. Revolver

On September 27, 2019, we entered into an Amended and Restated Credit Agreement with Bank of America, N.A. (the "U.S. Revolver"), which replaced our prior credit agreement. The U.S. Revolver is a $75.0 million revolving credit facility, which is available for both borrowings and letters of credit and expires September 2024. As of September 30, 2019, there were no amounts borrowed under this facility and letters of credit outstanding were $13.4 million. As of September 30, 2019, $61.6 million was available for the issuance of letters of credit and borrowing under the U.S. Revolver. In addition, the U.S. Revolver includes a right of the Company to request from time to time an increase in the revolving line of credit of up to $50.0 million, provided that (i) no default exists, (ii) each request must be in a minimum amount of $15.0 million (or, if less, the remaining portion of the increase), (iii) the Company may make a maximum of four such requests and (iv) each lender may agree whether or not to increase its revolving commitment.

We are required to maintain certain financial covenants, the most significant of which are a consolidated leverage ratio greater than 3.0 to 1.0 and a consolidated interest coverage ratio of less than 3.0 to 1.0. Additionally, we must maintain a consolidated cash balance of $30 million at all times. The U.S. Revolver also contains a "material adverse effect" clause which is a material change in our operations, business, properties, liabilities or condition (financial or otherwise) or a material impairment of our ability to perform our obligations under our credit agreements. As of September 30, 2019, we were in compliance with all of the financial covenants of the U.S. Revolver.

As of September 30, 2018, the balance in the cash collateral account was $25.1 million and was recorded as restricted cash in our Consolidated Balance Sheets, which was required by our prior credit agreement. The portion of the cash collateral account associated with the outstanding letters of credit that were due to expire beyond twelve months was classified as non-current restricted cash. Our U.S. Revolver removes the previous requirement for all letters of credit and borrowings to be collateralized at 102%.

The U.S. Revolver allows the Company to elect that any borrowing under the facility bear an interest rate based on either the base rate or the eurocurrency rate, in each case, plus the applicable rate. The base rate is generally the highest of (a) the federal funds rate plus 0.50%, (b) the Bank of America prime rate and (c) the London Interbank Offered Rate (“LIBOR”) plus 1.00%, subject to certain interest rate floors set forth in the U.S. Revolver. The eurocurrency rate is generally (i) LIBOR for credit extensions denominated in U.S. dollars, euros or pound sterling, (ii) the Canadian dollar offered rate for credit extensions denominated in Canadian dollars and (iii) the rate designated by Bank of America for credit extensions denominated in other currencies. The applicable rate is generally a range from (0.25)% to 0.25% for base rate loans and 1.25% to 1.75% for eurocurrency rate loans, in each case based on the Company's consolidated leverage ratio, provided that the applicable rate is initially (0.25)% for base rate loans and 1.25% for eurocurrency rate loans until January 1, 2020.

The U.S. Revolver is collateralized by a pledge of 100% of the voting capital stock of each of our domestic subsidiaries and 65% of the voting capital stock of each non-domestic subsidiary. The U.S. Revolver provides for customary events of default and carries cross-default provisions with other existing debt agreements. If an event of default (as defined in the U.S. Revolver) occurs and is continuing, on the terms and subject to the conditions set forth in the U.S. Revolver, amounts and letters of credit outstanding under the U.S. Revolver may be accelerated and may become immediately due and payable.

Industrial Development Revenue Bonds

We borrowed $8.0 million in October 2001 through a loan agreement funded with proceeds from tax-exempt industrial development revenue bonds (Bonds). These Bonds were issued by the Illinois Development Finance Authority and were used for the completion of our Northlake, Illinois facility. Pursuant to the Bond issuance, a reimbursement agreement between us and a major domestic bank required an issuance by the bank of an irrevocable direct-pay letter of credit (Bond LC), as collateral, to the Bonds’ trustee to guarantee payment of the Bonds’ principal and interest when due. The Bond LC is subject to both early termination and extension provisions customary to such agreements. While the Bonds mature in 2021, the reimbursement agreement requires annual redemptions of $0.4 million that commenced on October 25, 2002. A sinking fund is used for the annual principal payment. The Bonds bear interest at a floating rate determined weekly by the Bonds’ remarketing agent, which was the underwriter for the Bonds and is an affiliate of the bank. This interest rate was 1.69% as of September 30, 2019. As of September 30, 2019, we were in compliance with all of the covenants of the Bonds.