	March 31, 2021			December 31, 2020
2026 revolving credit facility (1)	$	225,000		$	75,000
2027 notes		695,000			777,500
2030 notes		550,000			550,000
Other finance obligations		211,167			216,072
Finance lease obligations		7,714			23,873
		1,688,881			1,642,445
Unamortized debt discount/premium and debt issuance costs		(16,638	)		(18,205	)
		1,672,243			1,624,240
Less: current maturities of long-term debt and lease obligations		14,134			27,335
Long-term debt, net of current maturities	$	1,658,109		$	1,596,905

On January 29, 2021, the Company amended its revolving credit facility to increase the total commitments by an aggregate amount of $500.0 million resulting in a new $1.4 billion amended credit facility (the “2026 revolving credit facility”), and to extend the maturity date from November 2023 to January 2026. In connection with this amendment, we expensed approximately $1.0 million of unamortized debt issuance costs related to exiting lenders to interest expense in the accompanying condensed consolidated statement of operations during the three months ended March 31, 2021. Approximately $4.3 million of new debt issuance costs related to the amendment will be deferred through January 2026. The 2026 revolving credit facility is discussed in more detail below.

On March 3, 2021, pursuant to the optional call feature in the indenture governing our 6.75% senior secured notes due 2027 (the “2027 notes”), $82.5 million of 2027 notes were redeemed at a redemption price equal to 103% of the principal amount of the notes, plus accrued and unpaid interest. In connection with this redemption, we recognized a loss on extinguishment of $3.6 million, which was recorded to interest expense in the accompanying condensed consolidated statement of operations during the three months ended March 31, 2021. Of this loss, approximately $2.5 million was attributable to the payment of redemption premiums on the extinguished notes and $1.1 million was attributable to the write-off of unamortized net debt discount and debt issuance costs.

The 2026 revolving credit facility provides for a $1.4 billion revolving credit line to be used for working capital, general corporate purposes and funding capital expenditures and growth opportunities. In addition, we may use borrowings under the 2026 revolving credit facility to facilitate debt repayment and consolidation. The available borrowing capacity, or borrowing base, is derived from a percentage of the Company’s eligible receivables and inventory, as defined by the agreement, subject to certain reserves. As of March 31, 2021, we had $225.0 million in outstanding borrowings under our 2026 revolving credit facility and our net excess borrowing availability was $1.0 billion after being reduced by outstanding letters of credit of approximately $136.7 million.

Borrowings under the 2026 revolving credit facility bear interest, at our option, at either a eurodollar rate or a base rate, plus, in each case, an applicable margin. The applicable margin ranges from 1.50% to 2.00% per annum in the case of eurodollar rate loans and 0.50% to 1.00% per annum in the case of base rate loans. The margin in either case is based on a measure of availability under the 2026 revolving credit facility. A variable commitment fee, currently 0.375% per annum, is charged on the unused amount of the revolver based on quarterly average loan utilization. Letters of credit under the 2026 revolving credit facility are assessed at a rate equal to the applicable eurodollar margin, currently 1.50%, as well as a fronting fee at a rate of 0.125% per annum. These fees are payable quarterly in arrears at the end of March, June, September, and December.

All obligations under the 2026 revolving credit facility are guaranteed jointly and severally by the Company and all other subsidiaries that guarantee the 2027 notes and our 5.00% unsecured senior notes due 2030 (the “2030 notes”). All obligations and the guarantees of those obligations are secured by substantially all of the assets of the Company and the guarantors subject to certain exceptions and permitted liens, including with respect to the 2026 revolving credit facility, a first-priority security interest in such assets that constitute ABL Collateral (as defined below) and a second-priority security interest in such assets that constitute Notes Collateral (as defined below).

“ABL Collateral” includes substantially all presently owned and after-acquired accounts receivable, inventory, rights of unpaid vendors with respect to inventory, deposit accounts, commodity accounts, securities accounts and lock boxes, investment property, cash and cash equivalents, and general intangibles, books and records, supporting obligations and documents and related letters of credit, commercial tort claims or other claims related to and proceeds of each of the foregoing. “Notes Collateral” includes all collateral that is not ABL Collateral.

The 2026 revolving credit facility contains restrictive covenants which, among other things, limit the Company’s ability to incur additional indebtedness, incur liens, engage in mergers or other fundamental changes, sell certain assets, pay dividends, make acquisitions or investments, prepay certain indebtedness, change the nature of our business, and engage in certain transactions with affiliates. In addition, the 2026 revolving credit facility also contains a financial covenant requiring the satisfaction of a minimum fixed charge ratio of 1.00 to 1.00 if our excess availability falls below the greater of $80.0 million or 10% of the maximum borrowing amount, which was $140.0 million as of March 31, 2021.

As of March 31, 2021 and December 31, 2020, the Company does not have any financial instruments that are measured at fair value on a recurring basis. We have elected to report the value of our 2027 notes, 2030 notes and 2026 revolving credit facility at amortized cost. The fair values of the 2027 notes and 2030 notes at March 31, 2021 were approximately $749.9 million and $576.3 million, respectively, and were determined using Level 2 inputs based on market prices. The carrying value of the 2026 revolving credit facility at March 31, 2021 approximates fair value as the rates are comparable to those at which we could currently borrow under similar terms, are variable and incorporate a measure of our credit risk. As such, the fair value of the 2026 revolving credit facility was also classified as Level 2 in the hierarchy.

We were not in violation of any covenants or restrictions imposed by any of our debt agreements at March 31, 2021.