Debt

Outstanding long-term debt was as follows:



	September 30, 2018		December 31, 2017
Senior long-term debt:
Senior Secured Credit Facility (stated maturity dates April 2022 and April 2024), net of discount	$	1,227,730	$	1,625,344
Senior Notes (stated maturity dates May 2025)	800,000		800,000
Total senior long-term debt	2,027,730		2,425,344
Other debt:
Lines of credit	52,226		42,195
Notes payable and other debt	512,537		593,268
Total senior and other debt	2,592,493		3,060,807
Capital lease obligations and sale-leaseback financings	108,691		139,758
Total long-term debt	2,701,184		3,200,565
Less: total unamortized deferred financing costs	91,184		105,299
Less: current portion of long-term debt	104,502		121,870
Long-term debt, less current portion	$	2,505,498	$	2,973,396

Estimated Fair Value of Debt

The estimated fair value of our debt was determined using observable market prices, as the majority of our securities, including the Senior Secured Credit Facility and the Senior Notes due 2025, are traded in a brokered market. The fair value of our remaining debt instruments approximates carrying value based on their terms. As of September 30, 2018 and December 31, 2017, our long-term debt was classified as Level 2 within the fair value hierarchy, based on the frequency and volume of trading in the brokered market. The estimated fair value of our debt was as follows:



	September 30, 2018				December 31, 2017
	Carrying amount		Estimated fair value		Carrying amount		Estimated fair value
Total senior and other debt	$	2,592,493	$	2,654,632	$	3,060,807	$	3,117,437

Amendment to Senior Secured Credit Facility - 2024 Term Loan

On February 1, 2018, we amended our Senior Secured Credit Facility to reduce the interest rate on our 2024 Term Loan. In connection with this transaction, we also prepaid $350,000 of the principal balance of the 2024 Term Loan in addition to $1,239 of accrued interest using the proceeds from the sale of our Cyprus and Italy operations, along with borrowings on our revolving credit facility that were subsequently repaid with the China sale proceeds. As a result of the $350,000 prepayment, there will be no further quarterly principal payments required and the remaining balance will be due at maturity.

Pursuant to this amendment, the interest rate margins applicable to the 2024 Term Loan were amended to 3.50% for LIBOR term loans and 2.50% for ABR term loans and such interest rate margins will no longer be based upon the Company’s consolidated total debt to consolidated EBITDA ratio. The amendment effectively reduces the current interest rate margins applicable to the outstanding term loans, which prior to the amendment was based on the Company’s consolidated total debt to consolidated EBITDA ratio, by 100 basis points, from 4.50% to 3.50% for LIBOR term loans, and 3.50% to 2.50% for ABR term loans. The amended credit agreement also provided for a prepayment premium with respect to the outstanding term loans. The prepayment premium equaled one percent (1%) of the amount of any term loans that were subject to certain repricing transactions occurring on or prior to August 1, 2018, of which there were none.

Certain Covenants

As of September 30, 2018, our senior long-term debt contained certain negative covenants including, among others: (1) limitations on additional indebtedness; (2) limitations on dividends; (3) limitations on asset sales, including the sale of ownership interests in subsidiaries and sale-leaseback transactions; and (4) limitations on liens, guarantees, loans or investments. The Second Amended and Restated Credit Agreement provides, solely with respect to the Revolving Credit Facility, that the Company shall not permit its Consolidated Senior Secured Debt to Consolidated EBITDA ratio, as defined in the Second Amended and Restated Credit Agreement, to exceed 3.50x as of the last day of each quarter ending June 30, 2018 and thereafter. However, the agreement also provides that if (i) the Company’s Consolidated Total Debt to Consolidated EBITDA ratio, as defined in the Second Amended and Restated Credit Agreement, is not greater than 4.75x as of such date and (ii) less than 25% of the Revolving Credit Facility is utilized as of that date, then such financial covenant shall not apply. As of September 30, 2018, these conditions were satisfied and, therefore, we were not subject to the leverage ratio covenant. In addition, notes payable at some of our locations contain financial maintenance covenants.