SELECTED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) SELECTED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) - QUARTERLY DATA (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Selected Quarterly Financial Information [Abstract]
Revenues	$ 255,745	$ 224,314	$ 222,447	$ 204,786	$ 228,961	$ 201,520	$ 212,426	$ 196,635	$ 907,292	$ 839,542	$ 782,648
Gross Profit	167,397	152,157	149,840	131,478	156,547	136,238	136,446	128,307	600,872	557,538	514,287
Income (loss) before provision for (benefit from) income taxes	16,824	30,011	21,314	(4,834)	26,840	8,858	18,037	14,029	63,315	67,764	46,157
Net income (loss)	24,154	24,054	18,505	(7,937)	27,294	6,615	13,265	11,630	58,776	58,804	40,625
Net income (loss) attributable to Verint Systems Inc.	22,887	22,487	17,536	(9,153)	25,889	5,471	12,607	10,035	53,757	54,002	36,993
Net income (loss) attributable to Verint Systems Inc. for basic net income (loss) per common share	22,887	22,487	17,536	(9,327)	21,938	1,562	8,739	6,291	53,583	38,530	22,203
Net income (loss) attributable to Verint Systems Inc. for diluted net income (loss) per common share	$ 22,887	$ 22,487	$ 17,536	$ (9,327)	$ 25,889	$ 1,562	$ 8,739	$ 6,291	$ 53,583	$ 38,530	$ 22,203
Basic (in dollars per share)	$ 0.43	$ 0.42	$ 0.33	$ (0.18)	$ 0.55	$ 0.04	$ 0.22	$ 0.16	$ 1.01	$ 0.97	$ 0.58
Diluted (in dollars per share)	$ 0.42	$ 0.42	$ 0.33	$ (0.18)	$ 0.50	$ 0.04	$ 0.22	$ 0.16	$ 0.99	$ 0.96	$ 0.56