Accounting Policies and Basis of Presentation (Tables)

6 Months Ended

Jul. 31, 2016

Accounting Policies [Abstract]

Schedule of Supplemental Cash Flow Information

Supplemental Cash Flow Information—The amounts paid for income taxes, interest and noncash investing and financing activities were as follows:

	Six Months Ended July 31,
(in thousands)	2016			2015
Income taxes paid	$	514		$	1,109
Income tax refunds		(171	)		(3,976	)
Interest paid		6,086			4,683
Noncash investing and financing activities:
Exchange of 4.25% convertible notes for 8.0% convertible notes		—			55,500
Accrued capital additions		2,772			1,442