XML 24 R32.htm IDEA: XBRL DOCUMENT v2.4.1.9
SHAREHOLDERS' EQUITY (Details Textual) (USD $)
3 Months Ended 9 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Apr. 30, 2015
Apr. 30, 2014
Subsidiary, Sale of Stock [Line Items]        
Conversion of Stock, Shares Converted     13us-gaap_ConversionOfStockSharesConverted1  
Dividends, Preferred Stock $ 0us-gaap_DividendsPreferredStock $ 0us-gaap_DividendsPreferredStock $ 0us-gaap_DividendsPreferredStock $ 0us-gaap_DividendsPreferredStock
Common Stock [Member]        
Subsidiary, Sale of Stock [Line Items]        
Convertible Preferred Stock, Shares Issued upon Conversion 65,000us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
  65,000us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
 
Series B Preferred Stock [Member]        
Subsidiary, Sale of Stock [Line Items]        
Preferred stock, liquidation preference $ 100us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
  $ 100us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
 
Dividends Payable, Amount Per Share $ 10us-gaap_DividendsPayableAmountPerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
  $ 10us-gaap_DividendsPayableAmountPerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
 
Series C Preferred Stock [Member]        
Subsidiary, Sale of Stock [Line Items]        
Convertible Preferred Stock, Shares Issued upon Conversion 25us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  25us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
 
Preferred stock, liquidation preference $ 1.00us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  $ 1.00us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
 
Dividends Payable, Amount Per Share $ 0.10us-gaap_DividendsPayableAmountPerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  $ 0.10us-gaap_DividendsPayableAmountPerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
 
Preferred Stock, Redemption Price Per Share $ 0.10us-gaap_PreferredStockRedemptionPricePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  $ 0.10us-gaap_PreferredStockRedemptionPricePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
 
Preferred Stock Conversion Premium $ 4.20nimu_PreferredStockConversionPremium
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  $ 4.20nimu_PreferredStockConversionPremium
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
 
Series D Preferred Stock [Member]        
Subsidiary, Sale of Stock [Line Items]        
Convertible Preferred Stock, Shares Issued upon Conversion 5,000us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
  5,000us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
 
Preferred stock, liquidation preference $ 1,500us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
  $ 1,500us-gaap_PreferredStockLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
 
Stock Issued During Period, Shares, New Issues     0us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
0us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember