LONG-TERM DEBT (Tables)

12 Months Ended

Jan. 31, 2018

Long-term Debt, Unclassified [Abstract]

Summary of long-term debt

The following table summarizes our long-term debt at January 31, 2018 and 2017: 

	January 31,
(in thousands)	2018			2017
1.50% Convertible Senior Notes	$	400,000		$	400,000
February 2014 Term Loans	—			130,060
March 2014 Term Loans	—			278,978
June 2017 Term Loan	422,875			—
Other debt	250			404
Less: Unamortized debt discounts and issuance costs	(50,141		)	(60,571		)
Total debt	772,984			748,871
Less: current maturities	4,500			4,611
Long-term debt	$	768,484		$	744,260

Summary of future scheduled principal payments on term loans

As of January 31, 2018, future scheduled principal payments on the 2017 Term Loan were as follows:

(in thousands)
Years Ending January 31,	Amount
2019	$	4,250
2020	4,250
2021	4,250
2022	4,250
2023	4,250
2024 and thereafter	401,625
Total	$	422,875

Schedule of components of interest expense

The following table presents the components of interest expense incurred on the Notes and on borrowings under our respective Credit Agreements for the years ended January 31, 2018, 2017, and 2016:

	Year Ended January 31,
(in thousands)	2018		2017		2016
1.50% Convertible Senior Notes:
Interest expense at 1.50% coupon rate	$	6,000	$	6,000	$	6,000
Amortization of debt discount	11,244		10,669		10,123
Amortization of deferred debt issuance costs	1,060		1,007		955
Total - 1.50% Convertible Senior Notes	$	18,304	$	17,676	$	17,078
Borrowings under Credit Agreements:
Interest expense at contractual rates	$	15,412	$	14,682	$	14,590
Impact of interest rate swap agreement	254		259		—
Amortization of debt discounts	65		58		56
Amortization of deferred debt issuance costs	1,839		2,211		2,166
Total - Borrowings under Credit Agreements	$	17,570	$	17,210	$	16,812