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Note 11 - Investment Under Equity Method (Details) - Company's investment in equity: (Parentheticals) | 12 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012
Note 11 - Investment Under Equity Method (Details) - Company's investment in equity: (Parentheticals) [Line Items] |  |
| 50.10% | 50.10%

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- Definition Percentage ownership in joint venture. + References No definition available. + Details
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Namespace Prefix: | ntwk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: | ntwk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration