Note 9 - Payroll Tax Deferral (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Social Security Tax Payment Deferred		$ 1,158
Tax Credit Receivable	$ 785

The amount of social security tax payment deferred.

No definition available.

Name:	nsys_SocialSecurityTaxPaymentDeferred
Namespace Prefix:	nsys_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant