CONDENSED BALANCE SHEETS - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 3,649,000	$ 7,128,000
Restricted cash	85,000	0
Accounts receivable, net	4,203,000	5,857,000
Inventories	87,000	85,000
Income tax receivable	242,000	241,000
Prepaid expenses and other	837,000	711,000
Total Current Assets	9,103,000	14,022,000
Other Assets:
Property and equipment, net	114,000	75,000
Operating lease right-of-use assets	202,000	37,000
Other, net	37,000	155,000
Total Assets	9,456,000	14,289,000
Current Liabilities:
Accounts payable	1,506,000	3,148,000
Accrued liabilities:
Compensation	395,000	424,000
Sales tax	1,275,000	1,011,000
Other	842,000	1,071,000
Current portion of long-term debt	0	464,000
Current portion of operating lease liabilities	75,000	56,000
Deferred revenue	211,000	180,000
Total Current Liabilities	4,304,000	6,354,000
Long-Term Liabilities:
Accrued income taxes	703,000	677,000
Long-term debt, net of current portion	0	590,000
Operating lease liabilities	127,000	0
Total Long-Term Liabilities	830,000	1,267,000
Commitments and Contingencies	0	0
Shareholders' Equity:
Common stock, par value $.01: Authorized shares - 5,714,000, Issued and outstanding shares - 1,768,000 at September 30, 2021 and 1,748,000 at December 31, 2020, respectively	18,000	17,000
Additional paid-in capital	16,443,000	16,238,000
Accumulated deficit	(12,139,000)	(9,587,000)
Total Shareholders' Equity	4,322,000	6,668,000
Total Liabilities and Shareholders' Equity	$ 9,456,000	$ 14,289,000

No definition available.

Name:	isig_SalesTax
Namespace Prefix:	isig_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).