LONG-TERM DEBT (Tables)

9 Months Ended

Oct. 31, 2014

Long-term Debt, Unclassified [Abstract]

Summary of long-term debt

The following table summarizes our long-term debt at October 31, 2014 and January 31, 2014: 

	October 31,			January 31,
(in thousands)	2014			2014
1.50% Convertible Senior Notes:
Principal amount	$	400,000		$	—
Unamortized debt discount	(76,535		)	—
1.50% Convertible Senior Notes, net	323,465			—
February 2014 Term Loans:
Gross amount	130,729			—
Unamortized debt discount	(289		)	—
February 2014 Term Loans, net	130,440			—
March 2014 Term Loans	280,413			—
March 2013 Term Loans:
Gross amount	—			645,125
Unamortized debt discount	—			(2,827		)
March 2013 Term Loans, net	—			642,298
Other debt	34			87
Total debt	734,352			642,385
Less: current maturities	36			6,555
Long-term debt	$	734,316		$	635,830

Summary of future scheduled principal payments on term loans

(in thousands)	February 2014		March 2014
Years Ending January 31,	Term Loans		Term Loans
2015 (remainder of year)	$	—	$	—
2016	—		—
2017	669		1,434
2018	1,337		2,869
2019	1,337		2,869
2020	127,386		273,241
Total	$	130,729	$	280,413

Schedule of components of interest expense

The following table presents the components of interest expense incurred on the Notes and on borrowings under our Credit Agreement for the three and nine months ended October 31, 2014 and 2013:

	Three Months Ended October 31,				Nine Months Ended October 31,
(in thousands)	2014		2013		2014		2013
1.50% Convertible Senior Notes:
Interest expense at 1.50% coupon rate	$	1,500	$	—	$	2,217	$	—
Amortization of debt discount	2,417		—		3,565		—
Amortization of deferred debt issuance costs	335		—		442		—
Total - 1.50% Convertible Senior Notes	$	4,252	$	—	$	6,224	$	—
Borrowings under Credit Agreement:
Interest expense at contractual rates	$	3,677	$	6,628	$	19,559	$	19,659
Amortization of debt discounts	14		115		102		341
Amortization of deferred debt issuance costs	538		529		1,895		1,627
Total - Borrowings under Credit Agreement	$	4,229	$	7,272	$	21,556	$	21,627