Debt and Credit Facilities (Tables)

3 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Borrowing Obligations and Applicable Margin for Borrowings

The applicable margin for the borrowings at December 31, 2014 is as follows:

Description	Base Rate Margin	LIBOR Margin
Term loans maturing August 2019	1.75%	2.75%
Revolving facility due August 2018	0.50% - 0.75% (a)	1.50% - 1.75% (a)

(a) The margin is determined based on our net leverage ratio at the date the interest rates are reset on the revolving credit line.

At December 31, 2014 and September 30, 2014, we had the following borrowing obligations (dollars in thousands):

	December 31, 2014		September 30, 2014
5.375% Senior Notes due 2020, net of unamortized premium of $4.4 million and $4.6 million, respectively. Effective interest rate 5.28%.	$	1,054,406	$	1,054,601
2.75% Convertible Debentures due 2031, net of unamortized discount of $82.3 million and $88.8 million, respectively. Effective interest rate 7.43%.	607,694		601,226
Credit Facility, net of unamortized original issue discount of $0.9 million and $1.0 million respectively.	475,241		476,399
Total long-term debt	$	2,137,341	$	2,132,226
Less: current portion	4,834		4,834
Non-current portion of long-term debt	$	2,132,507	$	2,127,392