NET (LOSS) INCOME PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. NET INCOME PER COMMON SHARE ATTRIBUTABLE TO VERINT SYSTEMS INC. - ANTIDILUTIVE SECURITIES (Details) - shares shares in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Stock options and restricted stock-based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive Securities Excluded from Computation of Earnings Per Share, (in shares)	1,491	606
1.50% convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive Securities Excluded from Computation of Earnings Per Share, (in shares)	6,205	6,205
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive Securities Excluded from Computation of Earnings Per Share, (in shares)	6,205	6,205