6.	Long-Term Debt

The Company's long-term debt instruments and balances outstanding at September 30, 2011 and 2010, and December 31, 2010 were as follows (in thousands):


	Balance at
	September 30,				December 31,
	2011		2010		2010
Domestic and multi-currency line of credit up to $280,000 due 2015	$	224,000	$	-	$	-
USD line of credit up to $300,000 due 2012		-		173,358		215,025
6.21% senior unsecured notes due 2021		25,000		25,000		25,000
6.09% senior unsecured notes due 2016		35,000		35,000		35,000
6.12% senior unsecured notes due 2012		26,667		40,000		26,667
7.26% senior unsecured notes due 2017		25,000		25,000		25,000
Variable rate senior unsecured note due 2015		50,000		-		-
Variable rate senior unsecured note due 2012		-		28,880		25,840
5.25% convertible senior unsecured notes due 2029		106,313		103,488		104,172
Total debt	$	491,980	$	430,726	$	456,704
Less current portion		21,856		25,493		24,433
Total long-term debt	$	470,124	$	405,233	$	432,271

On March 30, 2011, the Company entered into a new credit agreement for up to $330.0 million of credit with a group of commercial banks (the "Credit Agreement"). The Credit Agreement matures on March 31, 2015 and consists of a $280.0 million line of credit, which includes the ability to borrow up to $50.0 million in specified foreign currencies or U.S. dollars (the "Domestic and Multi-currency Line"), and a $50.0 million term loan facility (the "2015 Variable Rate Notes"). Interest on the Domestic and Multi-currency Line is charged, at the Company's option, at either the London Interbank Offered Rate ("LIBOR") plus a margin varying from 2.00% to 3.25%, or at the agent's base rate plus a margin varying from 0.50% to 1.75%. Interest on the 2015 Variable Rate Notes is charged, at the Company's option, at either LIBOR plus a margin of 3.50% or at the agent's base rate plus a margin of 2.00%. The margin for the Domestic and Multi-currency Line is dependent on the Company's cash flow leverage ratios as defined in the Credit Agreement. The Company also pays a fee on the unused portion of the Domestic and Multi-currency Line ranging from 0.25% to 0.50% (0.38% at September 30, 2011) based on the Company's cash flow leverage ratios. The weighted average interest rate (including margin) on the Domestic and Multi-currency Line and the 2015 Variable Rate Notes, respectively, was 2.75% and 3.75% at September 30, 2011. Beginning on March 31, 2012, the 2015 Variable Rate Notes require quarterly principal payments of $2.1 million with any outstanding principal remaining due at maturity on March 31, 2015.

In conjunction with the entry into the Credit Agreement, the Company repaid all outstanding revolving credit loans under its $300.0 million domestic line of credit due 2012 (the "USD Line of Credit") and its variable rate senior unsecured note due 2012 (the "2012 Variable Rate Notes") with proceeds of the Credit Agreement.

At September 30, 2011, borrowings under the Company's Domestic and Multi-currency Line consisted of multiple pricing tranches with maturity dates ranging from four to 31 days, and at September 30, 2010, borrowings under the Company's USD Line of Credit consisted of three pricing tranches with maturity dates ranging from one to 30 days. However, the Company routinely refinances borrowings pursuant to the terms of its Domestic and Multi-currency Line, and it also routinely refinanced borrowings under its USD Line of Credit before it was repaid on March 30, 2011. Therefore, these borrowings are reported as part of the applicable line of credit and as long-term debt.

In connection with the Domestic and Multi-currency Line and the 2015 Variable Rate Notes, the Company incurred approximately $2.6 million for issuance costs, which primarily consisted of underwriting fees, legal and other professional expenses. These costs are being amortized over a period of three years and are included in "Other assets" in the Company's consolidated balance sheets.

On March 30, 2011, in conjunction with the establishment of the Credit Agreement, the Company entered into a separate credit agreement for the issuance of $20.0 million in letters of credit (the "Letter of Credit Facility"). The Company had standby letters of credit of $18.6 million issued under the Letter of Credit Facility at September 30, 2011. Previously, these letters of credit were provided under the USD Line of Credit by reducing the amount available to the Company.

See Note 10 for a discussion of the Company's interest rate cap agreements.

Each of the Company's credit agreements and senior unsecured notes require the Company to maintain certain financial ratios. As of September 30, 2011, the Company was in compliance with all covenants or other requirements set forth in its debt agreements.