Debt

On September 25, 2015, the Company and certain of its subsidiaries entered into an unsecured $300,000 multi-currency revolving loan agreement with a group of six banks. Under this revolving loan agreement, which has a final maturity date of September 25, 2020, the Company has the option to select either a base interest rate (based upon the higher of the federal funds rate plus one-half of 1%, the prime rate of Bank of America plus a margin based on the Company’s consolidated leverage ratio, or the one-month LIBOR rate plus 1%) or a Eurocurrency interest rate (at the LIBOR rate plus a margin based on the Company’s consolidated leverage ratio). At the Company’s option, and subject to certain conditions, the available amount under the revolving loan agreement may be increased from $300,000 up to $450,000. During fiscal 2017, the Company repaid $60,666 of its revolving loan agreement and the maximum amount outstanding throughout the year was $112,000. As of July 31, 2017, the outstanding balance on the credit facility was $51,334 and the Company had outstanding letters of credit under the revolving loan agreement of $4,067. There was $244,599 available for future borrowing under the credit facility, which can be increased to $394,599 at the Company's option, subject to certain conditions. The revolving loan agreement has a final maturity date of September 25, 2020. As such, the borrowing is included in "Long-term obligations" on the Consolidated Balance Sheets.

The Company has a multi-currency line of credit in China with capacity of $10,000. This line of credit supports USD-denominated or CNY-denominated borrowing to fund working capital and operations for the Company's Chinese entities and is due on demand. The borrowings under this facility may be made for a period up to one year from the date of borrowing with interest on the USD-denominated borrowings incurred equal to U.S. dollar LIBOR on the date of borrowing plus a margin based upon duration and on the CNY-denominated borrowings incurred equal to the local China rate based upon duration. There is no ultimate maturity on the facility and it is subject to periodic review and repricing. The Company is not required to comply with any financial covenants as part of this agreement. The maximum amount outstanding on this facility was $5,691 and the Company repaid $1,700 during fiscal 2017. As of July 31, 2017, the aggregate outstanding balance on this line of credit in China was $3,228 and there was $6,772 available for future borrowings. Due to the short-term nature of this credit facility, the borrowings are classified as "Notes payable" within current liabilities in the accompanying Consolidated Balance Sheets.

On May 13, 2010, the Company completed a private placement of €75.0 million aggregate principal amount of senior unsecured notes to accredited institutional investors. The €75.0 million of senior notes consisted of €30.0 million aggregate principal amount of 3.71% Series 2010-A Senior Notes, which were repaid during fiscal 2017, and €45.0 million aggregate principal amount of 4.24% Series 2010-A Senior Notes, due May 13, 2020, with interest payable on the notes semiannually. This private placement was exempt from the registration requirements of the Securities Act of 1933. The notes have been fully and unconditionally guaranteed on an unsecured basis by the Company’s domestic subsidiaries.

During fiscal 2006 and 2007, the Company completed two private placement note issuances totaling $350 million in ten-year fixed rate notes with varying maturity dates to institutional investors at interest rates varying from 5.30% to 5.33%. The notes must be repaid equally over seven years, with interest payable on the notes due semiannually on various dates throughout the year. The private placements were exempt from the registration requirements of the Securities Act of 1933. The notes were not registered for resale and may not be resold absent such registration or an applicable exemption from the registration requirements of the Securities Act of 1933 and applicable state securities laws. The notes have certain prepayment penalties for repaying them prior to the maturity date. Under the debt agreement, the Company made scheduled principal payments of $42.5 million in fiscal years 2016 and 2015, respectively. The final principal payment for the 2006 series of notes was made during fiscal 2016, while the final principal payment for the 2007 series of notes was made during fiscal 2017.

The Company’s debt agreements require it to maintain certain financial covenants, including a ratio of debt to the trailing twelve months EBITDA, as defined in the debt agreements, of not more than a 3.25 to 1.0 ratio (leverage ratio) and the trailing twelve months EBITDA to interest expense of not less than a 3.0 to 1.0 ratio (interest expense coverage). As of July 31, 2017, the Company was in compliance with these financial covenants, with the ratio of debt to EBITDA, as defined by the agreements, equal to 0.7 to 1.0 and the interest expense coverage ratio equal to 30.6 to 1.0.

Total debt consists of the following as of July 31:



	2017			2016
Euro-denominated notes payable in 2017 at a fixed rate of 3.71%	$	—		$	33,459
Euro-denominated notes payable in 2020 at a fixed rate of 4.24%	53,202			50,188
USD-denominated notes payable through 2017 at a fixed rate of 5.33%	—			16,335
USD-denominated borrowing on revolving loan agreement at a weighted average rate of 1.94% and 1.31% as of July 31, 2017 and 2016, respectively	16,998			112,000
EUR-denominated borrowing on revolving loan agreement at a weighted average rate of 0.75% as of July 31, 2017	34,336			—
CNY-denominated borrowing on China revolving loan agreement at a weighted average rate of 3.92% and 4.00% as of July 31, 2017 and 2016, respectively	2,228			4,928
USD-denominated borrowing on China revolving loan agreement at a weighted average rate of 2.63% as of July 31, 2017	1,000			—
	$	107,764		$	216,910
Less notes payable	(3,228		)	(4,928		)
Total long-term debt	$	104,536		$	211,982

The Company had outstanding letters of credit of $4,067 and $4,261 at July 31, 2017 and 2016, respectively.

The estimated fair value of the Company’s long-term obligations was $109,303 and $218,977 at July 31, 2017 and 2016, respectively, as compared to the carrying value of $104,536 and $211,982 at July 31, 2017 and 2016, respectively. The fair value of the long-term obligations, which was determined using the market approach based upon the interest rates available to the Company for borrowings with similar terms and maturities, was determined to be Level 2 under the fair value hierarchy. Due to the short-term nature and variable interest rate pricing of the Company's revolving debt in China, it is determined that the carrying value of the debt equals the fair value of the debt.

Maturities on long-term debt are as follows:



Years Ending July 31,
2018	$	—
2019	—
2020	53,202
2021	51,334
2022	—
Total	$	104,536