Earnings per Share - Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	May 01, 2019	Apr. 30, 2019	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Earnings Per Share [Abstract]
Net earnings attributable to Guess, Inc.			$ 25,322	$ 25,530	$ 3,948	$ 4,309
Less net earnings attributable to nonvested restricted stockholders			233	268	235	390
Net earnings attributable to common stockholders			$ 25,089	$ 25,262	$ 3,713	$ 3,919
Weighted average common shares used in basic computations (in shares)			70,508,000	80,110,000	75,216,000	80,006,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)			848,000	1,440,000	939,000	1,242,000
Weighted average common shares used in diluted computations (in shares)			71,356,000	81,550,000	76,155,000	81,248,000
Net earnings per common share attributable to common stockholders:
Basic (in dollars per share)			$ 0.36	$ 0.32	$ 0.05	$ 0.05
Diluted (in dollars per share)			$ 0.35	$ 0.31	$ 0.05	$ 0.05
Antidilutive securities excluded from computation of earnings (loss) per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)			3,258,910	1,385,422	2,899,760	2,116,751
Conversion price of convertible senior notes (in dollars per share)	$ 46.88	$ 25.78			$ 25.78
Warrants outstanding (in shares)		11,600,000	11,600,000		11,600,000
Strike price of warrants (in dollars per share)		$ 46.88	$ 46.88		$ 46.88
Performance-based units
Antidilutive securities excluded from computation of earnings (loss) per share
Performance or market awards excluded from computation of EPS (in shares)			1,228,017	1,361,550	1,228,017	1,361,550