Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Total Verint Systems Inc. Stockholders’ Equity	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss	Non-controlling Interests	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjustment Total Verint Systems Inc. Stockholders’ Equity	Cumulative Effect, Period of Adoption, Adjustment Additional Paid-in Capital	Cumulative Effect, Period of Adoption, Adjustment Accumulated Deficit
Beginning balances (in shares) at Jan. 31, 2020			64,738,000
Beginning balances at Jan. 31, 2020	$ 1,242,437	$ 1,229,368	$ 68	$ 1,660,889	$ (174,134)	$ (105,590)	$ (151,865)	$ 13,069	$ (940)	$ (940)		$ (940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(3,975)	(6,014)				(6,014)		2,039
Other comprehensive income (loss)	(27,268)	(26,909)					(26,909)	(359)
Stock-based compensation - equity-classified awards	15,029	15,029		15,029
Common stock issued, or to be issued, for stock awards and stock bonuses (in shares)			399,000
Common stock issued for stock awards and stock bonuses	1,846	1,846	$ 1	1,845
Exercises of stock options (in shares)			2,000
Exercises of stock options	12	12		12
Treasury stock acquired (in shares)			(613,000)
Treasury stock acquired	(33,990)	(33,990)			(33,990)
Distribution to noncontrolling interest	(245)							(245)
Ending balances (in shares) at Apr. 30, 2020			64,526,000
Ending balances at Apr. 30, 2020	1,192,906	1,178,402	$ 69	1,677,775	(208,124)	(112,544)	(178,774)	14,504
Beginning balances (in shares) at Jan. 31, 2020			64,738,000
Beginning balances at Jan. 31, 2020	1,242,437	1,229,368	$ 68	1,660,889	(174,134)	(105,590)	(151,865)	13,069	(940)	(940)		(940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	6,612
Other comprehensive income (loss)	$ (6,469)
Treasury stock acquired (in shares)	(613,000)
Treasury stock acquired	$ (34,000)
Ending balances (in shares) at Jul. 31, 2020			65,400,000
Ending balances at Jul. 31, 2020	1,235,502	1,218,989	$ 70	1,689,388	(208,124)	(104,050)	(158,295)	16,513
Beginning balances (in shares) at Jan. 31, 2020			64,738,000
Beginning balances at Jan. 31, 2020	$ 1,242,437	1,229,368	$ 68	1,660,889	(174,134)	(105,590)	(151,865)	13,069	(940)	(940)		(940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	us-gaap:AccountingStandardsUpdate202006Member
Ending balances (in shares) at Jan. 31, 2021			65,773,000
Ending balances at Jan. 31, 2021	$ 1,282,564	1,267,437	$ 70	1,726,166	(208,124)	(113,797)	(136,878)	15,127	1,430	1,430	$ (43,445)	44,875
Beginning balances (in shares) at Apr. 30, 2020			64,526,000
Beginning balances at Apr. 30, 2020	1,192,906	1,178,402	$ 69	1,677,775	(208,124)	(112,544)	(178,774)	14,504
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	10,587	8,494				8,494		2,093
Other comprehensive income (loss)	20,799	20,479					20,479	320
Stock-based compensation - equity-classified awards	13,420	13,420		13,420
Common stock issued, or to be issued, for stock awards and stock bonuses (in shares)			874,000
Common stock issued for stock awards and stock bonuses	1	1	$ 1
Preferred stock dividends	(1,589)	(1,589)		(1,589)
Reacquisition of equity component from convertible notes repurchases, net of taxes	(218)	(218)		(218)
Distribution to noncontrolling interest	(404)							(404)
Ending balances (in shares) at Jul. 31, 2020			65,400,000
Ending balances at Jul. 31, 2020	1,235,502	1,218,989	$ 70	1,689,388	(208,124)	(104,050)	(158,295)	16,513
Beginning balances (in shares) at Jan. 31, 2021			65,773,000
Beginning balances at Jan. 31, 2021	1,282,564	1,267,437	$ 70	1,726,166	(208,124)	(113,797)	(136,878)	15,127	1,430	1,430	(43,445)	44,875
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	1,094	799				799		295
Other comprehensive income, excluding the distribution of Cognyte Software Ltd.	15,584	15,584					15,584
Distribution of Cognyte Software Ltd.	(277,412)	(264,542)		(281,665)			17,123	(12,870)
Stock-based compensation - equity-classified awards	14,253	14,253		14,253
Common stock issued, or to be issued, for stock awards and stock bonuses (in shares)			827,000
Common stock issued for stock awards and stock bonuses	0		$ 1	(1)
Common stock repurchased and retired (in shares)			(1,058,000)
Common stock repurchased and retired	(49,581)	(49,581)	$ (1)	(49,580)
Treasury stock acquired (in shares)			(543,000)
Treasury stock acquired	(25,868)	(25,868)			(25,868)
Purchases of capped calls, net of taxes	(32,416)	(32,416)		(32,416)
Ending balances (in shares) at Apr. 30, 2021			64,999,000
Ending balances at Apr. 30, 2021	929,648	927,096	$ 70	1,333,312	(233,992)	(68,123)	(104,171)	2,552
Beginning balances (in shares) at Jan. 31, 2021			65,773,000
Beginning balances at Jan. 31, 2021	1,282,564	1,267,437	$ 70	1,726,166	(208,124)	(113,797)	(136,878)	15,127	$ 1,430	$ 1,430	$ (43,445)	$ 44,875
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	6,410
Distribution of Cognyte Software Ltd.							17,123
Other comprehensive income (loss)	$ 34,370						34,370
Common stock repurchased and retired (in shares)	(1,058,300)
Common stock repurchased and retired	$ (49,600)
Ending balances (in shares) at Jul. 31, 2021			65,412,000
Ending balances at Jul. 31, 2021	944,668	942,045	$ 70	1,342,130	(234,524)	(63,123)	(102,508)	2,623
Beginning balances (in shares) at Apr. 30, 2021			64,999,000
Beginning balances at Apr. 30, 2021	929,648	927,096	$ 70	1,333,312	(233,992)	(68,123)	(104,171)	2,552
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	5,316	5,000				5,000		316
Other comprehensive income (loss)	1,663	1,663					1,663
Stock-based compensation - equity-classified awards	15,984	15,984		15,984
Common stock issued, or to be issued, for stock awards and stock bonuses (in shares)			456,000
Settlement of conversion premium upon maturity of 2014 Notes (in shares)			1,250,000
Settlement of conversion premium upon maturity of 2014 Notes	(8)	(8)		(59,139)	59,131
Common stock received from exercise of Note Hedges (in shares)			(1,250,000)
Common stock received from exercise of Note Hedges	3	3		57,695	(57,692)
Common stock received from exercise of Note Hedges related to repurchased 2014 Notes (in shares)			(42,000)
Common stock received from exercise of Note Hedges related to repurchased 2014 Notes	0			1,959	(1,959)
Treasury stock acquired (in shares)			(1,000)
Treasury stock acquired	(12)	(12)			(12)
Purchases of capped calls, net of taxes	(25)	(25)		(25)
Preferred stock dividends	(7,656)	(7,656)		(7,656)
Distribution to noncontrolling interest	(245)							(245)
Ending balances (in shares) at Jul. 31, 2021			65,412,000
Ending balances at Jul. 31, 2021	$ 944,668	$ 942,045	$ 70	$ 1,342,130	$ (234,524)	$ (63,123)	$ (102,508)	$ 2,623