Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Total Verint Systems Inc. Stockholders’ Equity	Total Verint Systems Inc. Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Non-controlling Interests
Balances (in shares) at Jan. 31, 2018			63,836
Balances at Jan. 31, 2018	$ 1,132,336	$ 38,047	$ 65	$ 1,519,724	$ (57,425)	$ (238,312)	$ 38,047	$ (103,460)	$ 1,120,592	$ 38,047	$ 11,744
Increase (Decrease) in Stockholders' Equity
Net (loss) income	70,220					65,991			65,991		4,229
Other comprehensive (loss) income	(41,821)							(41,765)	(41,765)		(56)
Stock-based compensation - equity-classified awards	57,659			57,659					57,659
Common stock issued for stock awards and stock bonuses (in shares)			1,501
Common stock issued for stock awards and stock bonuses	$ 8,885		$ 2	8,883					8,885
Treasury stock acquired (in shares)	(4)		(4)
Treasury stock acquired	$ (173)				(173)				(173)
Capital contributions by noncontrolling interest	60										60
Dividends to noncontrolling interest	(4,409)										(4,409)
Balances (in shares) at Jan. 31, 2019			65,333
Balances at Jan. 31, 2019	1,260,804		$ 67	1,586,266	(57,598)	(134,274)		(145,225)	1,249,236		11,568
Increase (Decrease) in Stockholders' Equity
Net (loss) income	35,683					28,684			28,684		6,999
Other comprehensive (loss) income	(6,650)							(6,640)	(6,640)		(10)
Stock-based compensation - equity-classified awards	65,080			65,080					65,080
Common stock issued for stock awards and stock bonuses (in shares)			1,531
Common stock issued for stock awards and stock bonuses	$ 9,544		$ 1	9,543					9,544
Treasury stock acquired (in shares)	(2,126)		(2,126)
Treasury stock acquired	$ (116,536)				(116,536)				(116,536)
Dividends to noncontrolling interest	$ (5,488)										(5,488)
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Balances (in shares) at Jan. 31, 2020			64,738
Balances at Jan. 31, 2020	$ 1,242,437	$ (940)	$ 68	1,660,889	(174,134)	(105,590)	$ (940)	(151,865)	1,229,368	$ (940)	13,069
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(107)					(7,267)			(7,267)		7,160
Other comprehensive (loss) income	15,299							14,987	14,987		312
Stock-based compensation - equity-classified awards	63,005			63,005					63,005
Common stock issued for stock awards and stock bonuses (in shares)			1,646
Common stock issued for stock awards and stock bonuses	14,110		$ 2	14,108					14,110
Exercises of stock options (in shares)			2
Exercises of stock options	$ 12			12					12
Treasury stock acquired (in shares)	(613)		(613)
Treasury stock acquired	$ (33,990)				(33,990)				(33,990)
Dividends to noncontrolling interest	(5,414)										(5,414)
Preferred stock dividends	(6,789)			(6,789)					(6,789)
Reacquisition of equity component from convertible notes repurchases, net of taxes	(218)			(218)					(218)
Temporary equity reclassification	(4,841)			(4,841)					(4,841)
Balances (in shares) at Jan. 31, 2021			65,773
Balances at Jan. 31, 2021	$ 1,282,564		$ 70	$ 1,726,166	$ (208,124)	$ (113,797)		$ (136,878)	$ 1,267,437		$ 15,127