Quarterly report pursuant to Section 13 or 15(d)

Segment Reporting - Summary of Net Revenue, Cost of Sales, Depreciation and Amortization, Operating Profit, and Interest Expense and Assets by Segment (Detail)

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Segment Reporting - Summary of Net Revenue, Cost of Sales, Depreciation and Amortization, Operating Profit, and Interest Expense and Assets by Segment (Detail) - USD ($)
 3 Months Ended
Feb. 29, 2024
Feb. 28, 2023
Nov. 30, 2023
Segment Reporting Information [Line Items]      
Total net revenue $ 7,852,235 $ 7,824,415  
Total cost of sales 2,160,468 2,067,364  
Total operating profit 821,223 1,683,171  
Total depreciation and amortization 33,186 280,844  
Total interest expense 256,459 466,231  
Total assets 61,710,774   $ 61,220,770
Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization 33,186 280,844  
Umbilical Cord Blood and Cord Tissue Stem Cell Service [Member]      
Segment Reporting Information [Line Items]      
Total net revenue 7,805,522 7,561,518  
Total cost of sales 1,884,566 1,687,250  
Total operating profit 1,057,719 1,807,693  
Total assets 56,017,726   55,471,149
Umbilical Cord Blood and Cord Tissue Stem Cell Service [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization 25,879 273,539  
Total interest expense 256,459 466,231  
PrepaCyte CB [Member]      
Segment Reporting Information [Line Items]      
Total net revenue 3,000 32,200  
Total cost of sales 25,483 17,122  
Total operating profit (29,428) 8,133  
Total assets 125,757   148,040
PrepaCyte CB [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization 6,945 6,945  
Public Cord Blood Banking [Member]      
Segment Reporting Information [Line Items]      
Total net revenue 43,713 230,697  
Total cost of sales 250,419 362,992  
Total operating profit (207,068) (132,655)  
Total assets 5,567,291   $ 5,601,581
Public Cord Blood Banking [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization $ 362 $ 360