Earnings (Loss) per Share - Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018
Earnings Per Share [Abstract]
Net earnings (loss) attributable to Guess, Inc.	$ 12,423	$ (13,442)	$ 16,371	$ (9,133)
Less net earnings attributable to nonvested restricted stockholders	118	187	306	577
Net earnings (loss) attributable to common stockholders	$ 12,305	$ (13,629)	$ 16,065	$ (9,710)
Weighted average common shares used in basic computations (in shares)	66,393,000	80,189,000	72,275,000	80,067,000
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	921,000	0	936,000	0
Weighted average common shares used in diluted computations (in shares)	67,314,000	80,189,000	73,211,000	80,067,000
Net earnings (loss) per common share attributable to common stockholders:
Basic (in dollars per share)	$ 0.19	$ (0.17)	$ 0.22	$ (0.12)
Diluted (in dollars per share)	$ 0.18	$ (0.17)	$ 0.22	$ (0.12)
Antidilutive securities excluded from computation of earnings (loss) per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)	3,277,923	1,310,933	3,067,758	1,610,091
Potentially Dilutive Shares
Antidilutive securities excluded from computation of earnings (loss) per share
Antidilutive equity awards excluded from computation of diluted weighted average common shares (in shares)		1,499,247		1,312,054
Performance Shares
Antidilutive securities excluded from computation of earnings (loss) per share
Performance or market awards excluded from computation of EPS (in shares)	1,182,805	1,336,679	1,182,805	1,336,679