Retail Access and Distribution Agreement (Details) (Valassis, USD $)	3 Months Ended		1 Months Ended
Mar. 31, 2014	Feb. 21, 2014	Apr. 30, 2014 Forecast
Retail access and distribution agreement
Payment made for marketing and service agreement	$ 188,000
Marketing and service agreement amortization period			4 years
Total consideration to be paid for marketing and service agreement		$ 500,000

Represents the amortization period for a marketing and service agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	isig_MarketingAndServiceAgreementAmortizationPeriod
Namespace Prefix:	isig_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration