4. Debt

We had no debt outstanding as of December 31, 2019 and 2018.

On August 21, 2018, Cactus LLC entered into a five-year senior secured asset-based revolving credit facility with a syndicate of lenders and JPMorgan Chase Bank, N.A., as administrative agent for such lenders and as an issuing bank and swingline lender (the “ABL Credit Facility”). The ABL Credit Facility provides for $75.0 million in revolving commitments, up to $15.0 million of which is available for the issuance of letters of credit. The ABL Credit Facility matures on August 21, 2023. The maximum amount that Cactus LLC may borrow under the ABL Credit Facility is subject to a borrowing base, which is based on a percentage of eligible accounts receivable and eligible inventory, subject to reserves and other adjustments.

Borrowings under the ABL Credit Facility bear interest at Cactus LLC’s option at either (i) the Alternate Base Rate (as defined therein) (“ABR”), or (ii) the Adjusted LIBO Rate (as defined therein) (“Eurodollar”), plus, in each case, an applicable margin. Letters of credit issued under the ABL Credit Facility accrue fees at a rate equal to the applicable margin for Eurodollar borrowings. The applicable margin ranges from 0.50% to 1.00% per annum for ABR borrowings and 1.50% to 2.00% per annum for Eurodollar borrowings and, in each case, is based on the average quarterly availability under the ABL Credit Facility for the immediately preceding fiscal quarter. The unused portion of the ABL Credit Facility is subject to a commitment fee that varies from 0.250% to 0.375% per annum, according to the average quarterly availability under the ABL Credit Facility for the immediately preceding fiscal quarter.

The ABL Credit Facility contains various covenants and restrictive provisions that limit Cactus LLC’s and each of its subsidiaries’ ability to, among other things, incur additional indebtedness and create liens, make investments or loans, enter into asset sales, make certain restricted payments and distributions, and engage in transactions with affiliates.

The ABL Credit Facility also requires Cactus LLC to maintain a fixed charge coverage ratio of 1.0 to 1.0 based on the ratio of EBITDA (as defined therein) minus Unfinanced Capital Expenditures (as defined therein) to Fixed Charges (as defined therein) during certain periods, including when availability under the ABL Credit Facility is under certain levels. If Cactus LLC fails to perform its obligations under the ABL Credit Facility, (i) the commitments under the ABL Credit Facility could be terminated, (ii) any outstanding borrowings under the ABL Credit Facility may be declared immediately due and payable and (iii) the lenders may commence foreclosure or other actions against the collateral.

At December 31, 2019 and 2018, although there were no borrowings outstanding, the applicable margin on our Eurodollar borrowings was 1.5% plus an adjusted base rate of one or three month LIBOR. We were in compliance with all covenants under the ABL Credit Facility as of December 31, 2019.

The ABL Credit Facility replaced Cactus LLC’s prior credit agreement, dated as of July 31, 2014, with Credit Suisse AG, as administrative agent, collateral agent and issuing bank, and the other lenders party thereto (the “Prior Credit Agreement”). The Prior Credit Agreement provided for a term loan tranche in an aggregate principal amount of $275.0 million, the outstanding balance of which was repaid in full in February 2018 from the net proceeds of our IPO, and a revolving credit facility (the “Prior Revolving Credit Facility”) of up to $50.0 million with a $10.0 million sublimit for letters of credit. The Prior Credit Agreement was terminated concurrently with the effectiveness of, and as a condition of entering into, the ABL Credit Facility. No loans or letters of credit under the Prior Credit Agreement were outstanding at the time of, or were repaid in connection with, such termination.

Loss on Debt Extinguishment

We recorded a $4.3 million loss on early extinguishment of debt in conjunction with the repayment of the term loan portion of the Prior Credit Agreement with a portion of the net proceeds from our IPO. The loss consisted of the write-off of the unamortized balance of debt discount and deferred loan costs of $2.1 million and $2.2 million, respectively. The loss on debt extinguishment is included under other income (expense), net, in the consolidated statement of income for the year ended December 31, 2018.

Interest (Income) Expense, net

Interest (income) expense, net, including debt discount and deferred financing costs amortization, was comprised of the following:


	Year Ended December 31,
	2019		2018		2017
Interest under bank facilities	$	315	$	2,669	$	18,627
Debt discount and deferred financing costs amortization		168		275		1,752
Finance lease interest		877		734		311
Other		164		45		82
Interest income		(2,403)		(128)		(5)
Interest (income) expense, net	$	(879)	$	3,595	$	20,767