

	September 30, 2019									December 31, 2018
(In thousands)	Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt			Principal Amount			Unamortized Discount and Debt Issuance Costs			Total Debt
2021 Convertible Notes	$	100,000		$	(13,707	)	$	86,293		$	100,000		$	(17,752	)	$	82,248
ABL Facility	70,200			—			70,200			76,300			—			76,300
Other debt	5,865			—			5,865			3,199			—			3,199
Total debt	176,065			(13,707		)	162,358			179,499			(17,752		)	161,747
Less: Current portion	(5,003		)	—			(5,003		)	(2,522		)	—			(2,522		)
Long-term debt	$	171,062		$	(13,707	)	$	157,355		$	176,977		$	(17,752	)	$	159,225

2021 Convertible Notes. In December 2016, we issued $100.0 million of unsecured convertible senior notes (“2021 Convertible Notes”) that mature on December 1, 2021, unless earlier converted by the holders pursuant to the terms of the notes. The notes bear interest at a rate of 4.0% per year, payable semiannually in arrears on June 1 and December 1 of each year.

On or after June 1, 2021 until the close of business on the business day immediately preceding the maturity date, holders may convert their notes at any time, regardless of whether any of the foregoing conditions have been satisfied. As of October 28, 2019, the notes were not convertible.

The notes are convertible into, at our election, cash, shares of common stock, or a combination of both, subject to satisfaction of specified conditions and during specified periods, as described above. If converted, we currently intend to pay cash for the principal amount of the notes converted. The conversion rate is 107.1381 shares of our common stock per $1,000 principal amount of notes (equivalent to an initial conversion price of $9.33 per share of common stock), subject to adjustment in certain circumstances. We may not redeem the notes prior to their maturity date.

In accordance with accounting guidance for convertible debt with a cash conversion option, we separately accounted for the debt and equity components of the notes in a manner that reflected our estimated nonconvertible debt borrowing rate. As of September 30, 2019, the carrying amount of the debt component was $86.3 million, which is net of the unamortized debt discount and issuance costs of $12.3 million and $1.4 million, respectively. Including the impact of the debt discount and related deferred debt issuance costs, the effective interest rate on the notes is approximately 11.3%.

Asset-Based Loan Facility. In May 2016, we entered into an asset-based revolving credit agreement which replaced our previous credit agreement. In October 2017, we entered into an Amended and Restated Credit Agreement and in March 2019, we entered into a First Amendment to Amended and Restated Credit Agreement (as amended, the “ABL Facility”). The March 2019 amendment increased the amount available for borrowings, reduced applicable borrowing rates, and extended the term. The ABL Facility provides financing of up to $200.0 million available for borrowings (inclusive of letters of credit) and can be increased up to a maximum capacity of $275.0 million, subject to certain conditions. As of September 30, 2019, our total availability under the ABL Facility was $171.0 million, of which $70.2 million was drawn, resulting in remaining availability of $100.8 million.

The ABL Facility terminates in March 2024; however, the ABL Facility has a springing maturity date that will accelerate the maturity of the ABL Facility to September 1, 2021 if, prior to such date, the 2021 Convertible Notes have not been repurchased, redeemed, refinanced, exchanged or otherwise satisfied in full or we have not escrowed an amount of funds, that together with the amount that we establish as a reserve against our borrowing capacity, is sufficient for the future settlement of the 2021 Convertible Notes at their maturity. The ABL Facility requires compliance with a minimum fixed charge coverage ratio and minimum unused availability of $25.0 million to utilize borrowings or assignment of availability under the ABL Facility towards funding the repayment of the 2021 Convertible Notes.

Borrowing availability under the ABL Facility is calculated based on eligible accounts receivable, inventory, and, subject to satisfaction of certain financial covenants as described below, composite mats included in the rental fleet, net of reserves and limits on such assets included in the borrowing base calculation. To the extent pledged by us, the borrowing base calculation also includes the amount of eligible pledged cash. The lender may establish such reserves, in part based on appraisals of the asset base, and other limits at its discretion which could reduce the amounts otherwise available under the ABL Facility. Availability associated with eligible rental mats will also be subject to maintaining a minimum consolidated fixed charge coverage ratio and a minimum level of operating income for the Mats and Integrated Services segment.

Under the terms of the ABL Facility, we may elect to borrow at a variable interest rate plus an applicable margin based on either, (1) LIBOR subject to a floor of zero or (2) a base rate equal to the highest of: (a) the federal funds rate plus 50 basis points, (b) the prime rate of Bank of America, N.A. and (c) LIBOR, subject to a floor of zero, plus 100 basis points, plus, in each case, an applicable margin per annum. The applicable margin ranges from 150 to 200 basis points for LIBOR borrowings, and 50

to 100 basis points for base rate borrowings, based on the consolidated fixed charge coverage ratio as defined in the ABL Facility. As of September 30, 2019, the applicable margin for borrowings under our ABL Facility was 150 basis points with respect to LIBOR borrowings and 50 basis points with respect to base rate borrowings. The weighted average interest rate for the ABL Facility was 3.8% at September 30, 2019. In addition, we are required to pay a commitment fee on the unused portion of the ABL Facility ranging from 25 to 37.5 basis points, based on the level of outstanding borrowings, as defined in the ABL Facility. As of September 30, 2019, the applicable commitment fee was 37.5 basis points.

The ABL Facility is a senior secured obligation, secured by first liens on all of our U.S. tangible and intangible assets, and a portion of the capital stock of our non-U.S. subsidiaries has also been pledged as collateral. The ABL Facility contains customary operating covenants and certain restrictions including, among other things, the incurrence of additional debt, liens, dividends, asset sales, investments, mergers, acquisitions, affiliate transactions, stock repurchases and other restricted payments. The ABL Facility also requires compliance with a fixed charge coverage ratio if availability under the ABL Facility falls below $22.5 million. In addition, the ABL Facility contains customary events of default, including, without limitation, a failure to make payments under the facility, acceleration of more than $25.0 million of other indebtedness, certain bankruptcy events, and certain change of control events.

Other Debt. Our foreign subsidiaries in Italy, India, and Canada maintain local credit arrangements consisting primarily of lines of credit which are renewed on an annual basis. We utilize local financing arrangements in our foreign operations in order to provide short-term local liquidity needs. We had $2.0 million and $1.1 million outstanding under these arrangements at September 30, 2019 and December 31, 2018, respectively.

At September 30, 2019, we had $13.1 million in outstanding letters of credit and performance bonds, for which the letters of credit are collateralized by $6.1 million in restricted cash. We also have a performance bond issued and outstanding of $6.0 million related to the appeals process for an ongoing income tax audit for our Mexico subsidiary. Additionally, our foreign operations had $33.0 million in outstanding letters of credit, performance bonds and other guarantees, primarily issued under a credit arrangement in Italy as well as certain letters of credit that are collateralized by $2.0 million in restricted cash.

Our financial instruments include cash and cash equivalents, receivables, payables, and debt. We believe the carrying values of these instruments, with the exception of our 2021 Convertible Notes, approximated their fair values at September 30, 2019 and December 31, 2018. The estimated fair value of our 2021 Convertible Notes was $106.2 million at September 30, 2019 and $120.9 million at December 31, 2018, based on quoted market prices at these respective dates.