Note 2. Basis of Presentation (Details Textual)	6 Months Ended
Jun. 30, 2016
Number of Instruments Held For Trading Purposes	0

Represents the number of instruments held for trading purposes.

No definition available.

Name:	intz_NumberOfInstrumentsHeldForTradingPurposes
Namespace Prefix:	intz_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration