| Summary of Net Revenue, Cost of Sales, Depreciation and Amortization, Operating Profit, and Interest Expense and Assets by Segment | 
 The following table shows, by segment: net revenue, cost of sales, depreciation and amortization, operating profit, and interest expense for the three and nine months ended August 31, 2024 and 2023: 
      
       
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
        
       
           | 
           | 
        For the three months ended August 31,  | 
           | 
        
       
           | 
           | 
        2024  | 
           | 
           | 
        2023  | 
           | 
        
       
        Net revenue:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        7,945,470  | 
           | 
           | 
        $  | 
        7,862,949  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        636  | 
           | 
           | 
           | 
        2,543  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        120,609  | 
           | 
           | 
           | 
        4,383  | 
           | 
        
       
        Total net revenue  | 
           | 
        $  | 
        8,066,715  | 
           | 
           | 
        $  | 
        7,869,875  | 
           | 
        
       
        Cost of sales:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        1,859,090  | 
           | 
           | 
        $  | 
        1,976,278  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        1,220  | 
           | 
           | 
           | 
        982  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        265,536  | 
           | 
           | 
           | 
        178,927  | 
           | 
        
       
        Total cost of sales  | 
           | 
        $  | 
        2,125,846  | 
           | 
           | 
        $  | 
        2,156,187  | 
           | 
        
       
        Operating profit:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        1,542,346  | 
           | 
           | 
        $  | 
        1,341,332  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        (7,529  | 
        )  | 
           | 
           | 
        (5,384  | 
        )  | 
        
       
        Public cord blood banking  | 
           | 
           | 
        (144,927  | 
        )  | 
           | 
           | 
        (174,904  | 
        )  | 
        
       
        Total operating profit  | 
           | 
        $  | 
        1,389,890  | 
           | 
           | 
        $  | 
        1,161,044  | 
           | 
        
       
        Depreciation and amortization:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        187,614  | 
           | 
           | 
        $  | 
        273,972  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        6,945  | 
           | 
           | 
           | 
        6,945  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        360  | 
           | 
        
       
        Total depreciation and amortization  | 
           | 
        $  | 
        194,559  | 
           | 
           | 
        $  | 
        281,277  | 
           | 
        
       
        Interest expense:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        533,464  | 
           | 
           | 
        $  | 
        469,642  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Total interest expense  | 
           | 
        $  | 
        533,464  | 
           | 
           | 
        $  | 
        469,642  | 
           | 
        
       
           | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
           | 
           | 
        For the nine months ended August 31,  | 
           | 
        
       
           | 
           | 
        2024  | 
           | 
           | 
        2023  | 
           | 
        
       
        Net revenue:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        23,716,492  | 
           | 
           | 
        $  | 
        23,006,164  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        39,470  | 
           | 
           | 
           | 
        61,920  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        205,799  | 
           | 
           | 
           | 
        398,896  | 
           | 
        
       
        Total net revenue  | 
           | 
        $  | 
        23,961,761  | 
           | 
           | 
        $  | 
        23,466,980  | 
           | 
        
       
        Cost of sales:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        5,574,109  | 
           | 
           | 
        $  | 
        5,466,410  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        37,083  | 
           | 
           | 
           | 
        27,432  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        699,872  | 
           | 
           | 
           | 
        872,895  | 
           | 
        
       
        Total cost of sales  | 
           | 
        $  | 
        6,311,064  | 
           | 
           | 
        $  | 
        6,366,737  | 
           | 
        
       
        Operating profit:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        4,115,571  | 
           | 
           | 
        $  | 
        4,333,538  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        (18,447  | 
        )  | 
           | 
           | 
        13,654  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        (494,493  | 
        )  | 
           | 
           | 
        (475,079  | 
        )  | 
        
       
        Total operating profit  | 
           | 
        $  | 
        3,602,631  | 
           | 
           | 
        $  | 
        3,872,113  | 
           | 
        
       
        Depreciation and amortization:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        266,289  | 
           | 
           | 
        $  | 
        821,287  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        20,834  | 
           | 
           | 
           | 
        20,834  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        420  | 
           | 
           | 
           | 
        1,080  | 
           | 
        
       
        Total depreciation and amortization  | 
           | 
        $  | 
        287,543  | 
           | 
           | 
        $  | 
        843,201  | 
           | 
        
       
        Interest expense:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell service  | 
           | 
        $  | 
        1,119,196  | 
           | 
           | 
        $  | 
        1,405,825  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        —  | 
           | 
           | 
           | 
        —  | 
           | 
        
       
        Total interest expense  | 
           | 
        $  | 
        1,119,196  | 
           | 
           | 
        $  | 
        1,405,825  | 
           | 
        
       
  
  
The following table shows the assets by segment as of August 31, 2024 and November 30, 2023: 
  
      
       
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
         | 
        
       
           | 
           | 
        As of  | 
           | 
           | 
        As of  | 
           | 
        
       
           | 
           | 
        August 31, 2024  | 
           | 
           | 
        November 30, 2023  | 
           | 
        
       
        Assets:  | 
           | 
           | 
           | 
           | 
           | 
           | 
        
       
        Umbilical cord blood and cord tissue stem cell    service  | 
           | 
        $  | 
        57,318,175  | 
           | 
           | 
        $  | 
        55,471,149  | 
           | 
        
       
        PrepaCyte CB  | 
           | 
           | 
        149,112  | 
           | 
           | 
           | 
        148,040  | 
           | 
        
       
        Public cord blood banking  | 
           | 
           | 
        5,467,186  | 
           | 
           | 
           | 
        5,601,581  | 
           | 
        
       
        Total assets  | 
           | 
        $  | 
        62,934,473  | 
           | 
           | 
        $  | 
        61,220,770  | 
           | 
        
       
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