| Summary of Net Revenue, Cost of Sales, Operating Profit, Depreciation and Amortization, Interest Expense and Assets by Segment | 
 The following table shows, by segment: net revenue, cost of sales, operating profit, depreciation and amortization, interest expense, and assets for the years ended November 30, 2022 and November 30, 2021: 
  
      
       
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
        
       
           | 
           | 
        For the years ended November 30,  | 
           | 
        
       
           | 
           | 
        2022  | 
           | 
           | 
        2021  | 
           | 
        
       
        Net revenue:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        29,771,123  | 
           | 
           | 
        $  | 
        28,397,401  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        104,000  | 
           | 
           | 
           | 
        111,400  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        461,626  | 
           | 
           | 
           | 
        376,101  | 
           | 
        
       
        Total net revenue  | 
           | 
        $  | 
        30,336,749  | 
           | 
           | 
        $  | 
        28,884,902  | 
           | 
        
       
        Cost of sales:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        7,095,113  | 
           | 
           | 
        $  | 
        7,351,410  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        100,715  | 
           | 
           | 
           | 
        154,140  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        1,596,530  | 
           | 
           | 
           | 
        1,484,186  | 
           | 
        
       
        Total cost of sales  | 
           | 
        $  | 
        8,792,358  | 
           | 
           | 
        $  | 
        8,989,736  | 
           | 
        
       
        Operating profit:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        5,185,305  | 
           | 
           | 
        $  | 
        6,362,172  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        (24,493  | 
        )  | 
           | 
           | 
        (70,335  | 
        )  | 
        
       
        Public cord blood banking  | 
           | 
           | 
        (1,136,345  | 
        )  | 
           | 
           | 
        (2,273,604  | 
        )  | 
        
       
        Total operating profit  | 
           | 
        $  | 
        4,024,467  | 
           | 
           | 
        $  | 
        4,018,233  | 
           | 
        
       
        Depreciation and amortization:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        1,090,309  | 
           | 
           | 
        $  | 
        806,230  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        27,778  | 
           | 
           | 
           | 
        27,595  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        1,441  | 
           | 
           | 
           | 
        1,020  | 
           | 
        
       
        Total depreciation and amortization  | 
           | 
        $  | 
        1,119,528  | 
           | 
           | 
        $  | 
        834,845  | 
           | 
        
       
        Interest expense:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        1,521,767  | 
           | 
           | 
        $  | 
        1,378,926  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Total interest expense  | 
           | 
        $  | 
        1,521,767  | 
           | 
           | 
        $  | 
        1,378,926  | 
           | 
        
       
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
  
The following table shows the assets by segment as of November 30, 2022 and November 30, 2021: 
  
      
       
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
        
       
           | 
           | 
        2022  | 
           | 
           | 
        2021  | 
           | 
        
       
        Assets:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell    service  | 
           | 
        $  | 
        54,849,697  | 
           | 
           | 
        $  | 
        50,170,887  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        176,546  | 
           | 
           | 
           | 
        250,591  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        9,861,811  | 
           | 
           | 
           | 
        10,240,598  | 
           | 
        
       
        Total assets  | 
           | 
        $  | 
        64,888,054  | 
           | 
           | 
        $  | 
        60,662,076  | 
           | 
        
       
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