Long-Term Obligations

Long-term obligations consisted of the following at September 30, 2015 and December 31, 2014 (in thousands):



		September 30, 2015			December 31, 2014
Senior term notes	Notes payable, maturing in 2019, secured by assets, variable interest rate (1.69% and 1.67% at September 30, 2015 and December 31, 2014, respectively)	592,500			600,000
Revolving credit	Revolving line of credit, maturing in 2019, secured by assets, variable interest rate (1.69% and 1.67% at September 30, 2015 and December 31, 2014, respectively)	232,000			135,000
Secured seller notes	Notes payable matures in 2015, secured by assets and stock of certain subsidiaries, with interest rate of 10.0%	230			230
	Total debt obligations	824,730			735,230
	Capital lease obligations and other debt	56,425			59,538
		881,155			794,768
	Less — current portion	(34,043		)	(19,356		)
		$	847,112		$	775,412

Interest Rate. In general, borrowings under the Senior Credit Facility (including swing line borrowings) bear interest, at our option, on either:


•	the base rate (as defined below) plus the applicable margin of 0.50% (Pricing Tier 4, see table below) per annum; or


•	the Eurodollar rate (as defined below), plus a margin of 1.50% (Pricing Tier 4, see table below) per annum


6.	Long-Term Obligations, continued

Each of the aforementioned margins remain applicable until the date of delivery of the compliance certificate and the financial statements, for the period ended September 30, 2015, at which time the applicable margin will be determined by reference to the leverage ratio in effect from time to time as set forth in the following table:



Pricing Tier	Consolidated Leverage Ratio	Applicable Margin for Eurodollar Loans/Letter of Credit Fees		Applicable Margin for Base Rate Loans		Commitment Fee
1	≥ 4.00:1.00	2.25	%	1.25	%	0.45	%
2	< 4.00:1.00 and ≥ 3.25:1.00	2.00	%	1.00	%	0.40	%
3	< 3.25:1.00 and ≥ 2.50:1.00	1.75	%	0.75	%	0.35	%
4	< 2.50:1.00 and ≥ 1.75:1.00	1.50	%	0.50	%	0.30	%
5	< 1.75:1.00 and ≥ 1.00:1.00	1.25	%	0.25	%	0.25	%
6	< 1.00:1.00	1.00	%	—	%	0.25	%

The base rate for the senior term notes is a rate per annum equal to the highest of the (a) Federal Funds Rate plus 0.5%, (b) Bank of America, N.A.'s ("Bank of America") prime rate in effect on such day, and (c) the Eurodollar rate plus 1.0%. The Eurodollar rate is defined as the rate per annum equal to the London Interbank Offered Rate ("LIBOR"), or a comparable or successor rate which is approved by Bank of America.

Maturity and Principal Payments. The senior term notes mature on August 27, 2019. Principal payments on the senior term notes of $7.5 million are due each calendar quarter from December 31, 2015 to and including June 30, 2017, $11.3 million are due each calendar quarter from September 30, 2017 to and including June 30, 2018 and $15.0 million are due each calendar quarter thereafter with a final payment of the outstanding principal balance due upon maturity.

The revolving credit facility has a per annum commitment fee determined by reference to the Leverage Ratio in effect from time to time as set forth in the table above and is applied to the unused portion of the commitment. The revolving credit facility matures on August 27, 2019. Principal payments on the revolving credit facility are made at our discretion with the entire unpaid amount due at maturity. At September 30, 2015, we had borrowings of $232.0 million under our revolving credit facility.

The following table sets forth the scheduled principal payments for the Senior Credit Facility (in thousands):



	2015		2016		2017		2018		2019
Senior term notes	$	7,500	$	30,000	$	37,500	$	52,500	$	465,000
Revolving loans	—		—		—		—		232,000
	$	7,500	$	30,000	$	37,500	$	52,500	$	697,000

Guarantees and Security. We and each of our wholly-owned domestic subsidiaries guarantee the outstanding indebtedness under the Senior Credit Facility. Any borrowings, along with the guarantees of the domestic subsidiaries, are further secured by a pledge of substantially all of our consolidated assets, including 65% of the voting equity and 100% of the non-voting equity interest in each of our foreign subsidiaries.