Business Segment Information (Schedule of Total Assets by Segment) (Details) (Verint [Member], USD $) In Thousands, unless otherwise specified	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Verint [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information, Net Assets	$ 1,564,923	$ 1,441,424	$ 1,461,818

Amount of net assets (total assets less total liabilities) attributed to the reportable segment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_SegmentReportingInformationNetAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant