(11) LONG‑TERM DEBT

Long-term debt was as follows (in thousands):


	June 30,		December 31,
	2020		2019
Revolving credit facility due in 2022	$	349,000	$	350,700
6.125% senior notes due in 2026		299,900		300,000
Senior notes unamortized deferred issuance costs, net of accumulated amortization of $1,986 and $1,544, respectively		(6,096)		(6,538)
	$	642,804	$	644,162

On February 12, 2018, the Company and TLP Finance Corp., our wholly owned subsidiary, issued at par $300 million of 6.125% senior notes. Net proceeds, after $8.1 million of issuance costs, were used to repay indebtedness under our revolving credit facility. The senior notes are due in 2026 and are guaranteed on a senior unsecured basis by each of our 100% owned domestic subsidiaries that guarantee obligations under our revolving credit facility. TransMontaigne Partners LLC has no independent assets or operations unrelated to its investments in its consolidated subsidiaries. TLP Finance Corp. has no assets or operations. Our operations are conducted by subsidiaries of TransMontaigne Partners LLC through our 100% owned operating company subsidiary, TransMontaigne Operating Company L.P. None of the assets of TransMontaigne Partners LLC or a guarantor represent restricted net assets pursuant to the guidelines established by the SEC.

Our revolving credit facility provides for a maximum borrowing line of credit equal to $850 million. The terms of our revolving credit facility include covenants that restrict our ability to make cash distributions, acquisitions and investments, including investments in joint ventures. We may make distributions of cash to the extent of our “available cash” as defined in our LLC agreement. We may make acquisitions and investments that meet the definition of “permitted acquisitions”; “other investments” which may not exceed 5% of “consolidated net tangible assets”; and additional future “permitted JV investments” up to $175 million, which may include additional investments in BOSTCO. The primary financial covenants contained in our revolving credit facility are (i) a total leverage ratio test (not to exceed 5.25 to 1.0), (ii) a senior secured leverage ratio test (not to exceed 3.75 to 1.0), and (iii) a minimum interest coverage ratio test (not less than 2.75 to 1.0). The principal balance of loans and any accrued and unpaid interest are due and payable in full on the maturity date, March 13, 2022. We were in compliance with all financial covenants as of and during the six months ended June 30, 2020 and the year ended December 31, 2019.

We may elect to have loans under our revolving credit facility bear interest either (i) at a rate of LIBOR plus a margin ranging from 1.75% to 2.75% depending on the total leverage ratio then in effect, or (ii) at the base rate plus a margin ranging from 0.75% to 1.75% depending on the total leverage ratio then in effect. We also pay a commitment fee on the unused amount of commitments, ranging from 0.375% to 0.5% per annum, depending on the total leverage ratio then in effect. Our obligations under our revolving credit facility are secured by a first priority security interest in favor of the lenders in the majority of our assets, including our investments in unconsolidated affiliates. For the six months ended June 30, 2020 and 2019, the weighted average interest rate on borrowings under our revolving credit facility was approximately 5.2% and 5.8%, respectively. At June 30, 2020 and December 31, 2019, our outstanding borrowings under our revolving credit facility were $349.0 million and $350.7 million, respectively. At both June 30, 2020 and December 31, 2019 our outstanding letters of credit were $1.3 million.