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		(9,178)				9,358		180
Share-based compensation expense		4,015						4,015
Taxes paid for net share settlements		(317)						(317)
Other comprehensive income (loss), net			6,814					6,814
Net income (loss)					8,903			8,903
Balance at end of period at Oct. 31, 2020	264	446,662	(11,194)		902,041	(27,506)		1,310,267
Balance at beginning of period at Jul. 31, 2020	264	444,384	(18,260)		838,867	(27,506)		1,237,749
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense		2,278						2,278
Other comprehensive income (loss), net			7,066					7,066
Net income (loss)					63,174			63,174
Balance at end of period at Oct. 31, 2020	264	446,662	(11,194)		902,041	(27,506)		1,310,267
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		(5,089)				5,089
Share-based compensation expense		11,773						11,773
Taxes paid for net share settlements		(4,333)						(4,333)
Other comprehensive income (loss), net			(9,334)					(9,334)
Net income (loss)					152,163			152,163
Balance at end of period at Oct. 31, 2021	264	450,768	(11,428)		1,068,575	(21,940)		1,486,239
Balance at beginning of period at Jul. 31, 2021	264	447,476	(7,026)		961,901	(22,003)		1,380,612
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(63)				63
Share-based compensation expense		3,354						3,354
Taxes paid for net share settlements		1						1
Other comprehensive income (loss), net			(4,402)					(4,402)
Net income (loss)					106,674			106,674
Balance at end of period at Oct. 31, 2021	$ 264	$ 450,768	$ (11,428)		$ 1,068,575	$ (21,940)		$ 1,486,239