Quarterly report [Sections 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)

v3.26.1
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. 28, 2026
Feb. 28, 2025
Nov. 30, 2025
Segment Reporting Information [Line Items]      
Total net revenue $ 7,683,117 $ 7,968,880  
Total cost of sales 1,656,488 1,984,588  
Total operating profit 765,134 1,056,011  
Total depreciation and amortization 183,887 191,853  
Total interest expense 462,709 494,962  
Total assets 60,884,986   $ 61,728,514
Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization 183,887 191,853  
Umbilical Cord Blood and Cord Tissue Stem Cell Service [Member]      
Segment Reporting Information [Line Items]      
Total net revenue 7,643,113 7,865,888  
Total cost of sales 1,544,001 1,701,635  
Total operating profit 837,865 1,242,917  
Total assets 59,940,047   60,788,322
Umbilical Cord Blood and Cord Tissue Stem Cell Service [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization 183,639 184,908  
Total interest expense 462,709 494,962  
PrepaCyte CB [Member]      
Segment Reporting Information [Line Items]      
Total net revenue 38,594 20,913  
Total cost of sales 12,187 6,959  
Total operating profit 26,159 7,009  
Total assets 140,900   135,379
PrepaCyte CB [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization 248 6,945  
Public Cord Blood Banking [Member]      
Segment Reporting Information [Line Items]      
Total net revenue 1,410 82,079  
Total cost of sales 100,300 275,994  
Total operating profit (98,890) (193,915)  
Total assets $ 804,039   $ 804,813
Public Cord Blood Banking [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Total depreciation and amortization   $ 0