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Revenue in Excess of Billings - Long Term - Schedule of Revenue in Excess of Billings (Details) - USD ($) | Jun. 30, 2018 | Jun. 30, 2017
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Contractors [Abstract] |  |
Revenue in excess of billing - long term | $ 1,445,245 | $ 5,483,869
Present value discount | (238,576) | (310,331)
Net Balance | $ 1,206,669 | $ 5,173,538

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- Definition Revenue in excess of billing - long term. + References No definition available. + Details
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Namespace Prefix: | NTWK_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Fair value adjustment of revenue in excess of billings - long term to subsequent period. + References No definition available. + Details
Name: | NTWK_FairValueAdjustmentOfRevenueInExcessOfBillingsLongTermToSubsequentPeriod
Namespace Prefix: | NTWK_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_ContractorsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(c)(3),(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedAfterOneYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant