CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings	Common Stock Held in Treasury	Cumulative Effect, Period of Adoption, Adjustment	Total
Balance at beginning of period at Jan. 31, 2020	$ 264	$ 452,142	$ (18,008)		$ 893,138	$ (36,864)		$ 1,290,672
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(1,185)				1,185
Share-based compensation expense		(811)						(811)
Taxes paid for net share settlements		(306)						(306)
Other comprehensive income, net			(4,026)					(4,026)
Net income					(39,295)			(39,295)
Balance at end of period at Apr. 30, 2020	264	449,840	(22,034)		853,843	(35,679)		1,246,234
Balance at beginning of period at Jan. 31, 2021	264	448,417	(2,094)	$ (271)	916,683	(27,029)	$ (271)	1,336,241
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(4)				4
Share-based compensation expense		2,548						2,548
Other comprehensive income, net			(6,963)					(6,963)
Net income					26,321			26,321
Balance at end of period at Apr. 30, 2021	$ 264	$ 450,961	$ (9,057)		$ 942,733	$ (27,025)		$ 1,357,876