Long-Term Debt



(In thousands)	March 31, 2018		December 31, 2017
2006 Senior Notes payable through 2021, 5.41%, net of debt issuance costs	$	26,667	$	26,667
2010 Senior Notes payable through 2021, 4.00%, net of debt issuance costs	80,000		80,000
2016 Senior Notes payable through 2031, 3.40%, net of debt issuance costs	76,898		74,139
Senior revolving credit facility maturing in 2020, net of debt issuance costs	284,528		293,693
Total	468,093		474,499
Amounts due within one year, net of debt issuance costs	26,667		26,667
Long-term debt, net of debt issuance costs	$	441,426	$	447,832

Under the 2015 Amended and Restated Credit Agreement associated with our senior revolving credit facility, the Company may elect either a Base rate of interest (“BASE”) or an interest rate based on the London Interbank Offered Rate (“LIBOR”). The BASE is a daily fluctuating per annum rate equal to the highest of (i) the Prime Rate, (ii) the Federal Funds Open Rate plus one half of one percent (0.5%) or (iii) the Daily Libor Rate plus one percent (1.00%). The Company pays a credit spread of 0 to 175 basis points based on the Company’s net EBITDA leverage ratio and elected rate (BASE or LIBOR). The Company has a weighted average revolver interest rate of 3.08% as of March 31, 2018. At March 31, 2018, $282.6 million of the existing $575.0 million senior revolving credit facility was unused, including letters of credit.

On January 22, 2016, the Company entered into a multi-currency note purchase and private shelf agreement, pursuant to which MSA issued notes in an aggregate original principal amount of £54.9 million (approximately $77.0 million at March 31, 2018). The notes are repayable in annual installments of £6.1 million (approximately $8.5 million at March 31, 2018), commencing January 22, 2023, with a final payment of any remaining amount outstanding on January 22, 2031. The interest rate on these notes is fixed at 3.4%. The note purchase agreement requires MSA to comply with specified financial covenants including a requirement to maintain a minimum fixed charges coverage ratio of not less than 1.50 to 1.00 and a consolidated leverage ratio not to exceed 3.25 to 1.00; in each case calculated on the basis of the trailing four fiscal quarters. In addition, the note purchase agreement contains negative covenants limiting the ability of MSA and its subsidiaries to incur additional indebtedness or issue guarantees, create or incur liens, make loans and investments, make acquisitions, transfer or sell assets, enter into transactions with affiliated parties, make changes in its organizational documents that are materially adverse to lenders or modify the nature of MSA's or its subsidiaries' business.

The revolving credit facilities and note purchase agreements require the Company to comply with specified financial covenants. In addition, the credit facilities and the note purchase agreements contain negative covenants limiting the ability of the Company and its subsidiaries to enter into specified transactions. The Company was in compliance with all covenants at March 31, 2018.

The Company had outstanding bank guarantees and standby letters of credit with banks as of March 31, 2018 totaling $13.4 million, of which $6.7 million relate to the senior revolving credit facility. The letters of credit serve to cover customer requirements in connection with certain sales orders and insurance companies. The full amount of the letters of credit remains unused and available at of March 31, 2018. The Company is also required to provide cash collateral in connection with certain arrangements. At March 31, 2018, the Company has $3.9 million of restricted cash in support of these arrangements.