Represents the maximum daily amount of consulting fee per hour for services rendered to the related party by the company.

No definition available.

+ Details

Name:	nsys_MaximumDailyConsultingFeeRelatedPartyTransactions
Namespace Prefix:	nsys_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Term of the consulting arrangement, in 'PnYnMnDTnHnMnS' format.

+ References

No definition available.

+ Details

Name:	nsys_TermOfConsultingAgreementRelatedPartyTransactions
Namespace Prefix:	nsys_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

Name:	us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=nsys_ConsultingArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_ChiefOperatingOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=nsys_IndependentDirectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

RELATED PARTY TRANSACTIONS (Details) - Consulting arrangement - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Feb. 22, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Matt Mahmood
RELATED PARTY TRANSACTIONS
Expenses incurred		$ 17	$ 30	$ 29	$ 75
William Murray
RELATED PARTY TRANSACTIONS
Term of consulting agreement	3 months
Maximum daily consulting fee	$ 2
Expenses incurred		$ 32		$ 68