Earnings Per Share ("EPS") (Tables)

9 Months Ended

Oct. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Share Basic And Diluted

	Three months ended October 31,				Nine months ended October 31,
	2014		2013		2014		2013
	(In thousands, except per share data)
Net income	$	41,700	$	37,716	$	94,495	$	70,171
Weighted-average common shares - basic	38,253		38,060		38,212		38,004
Effect of dilutive securities:
Equity-based awards	180		168		164		202
Weighted-average common shares - diluted	38,433		38,228		38,376		38,206
Net income per share:
Basic	$	1.09	$	0.99	$	2.47	$	1.85
Diluted	$	1.09	$	0.99	$	2.46	$	1.84