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)

v3.25.3
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 9 Months Ended
Aug. 31, 2025
Aug. 31, 2024
Aug. 31, 2025
Aug. 31, 2024
Nov. 30, 2024
Segment Reporting Information [Line Items]          
Total net revenue $ 7,825,432 $ 8,066,715 $ 23,723,155 $ 23,961,761  
Total cost of sales 1,801,419 2,125,846 5,642,546 6,311,064  
Total operating profit 1,900,536 1,389,890 4,449,181 3,602,631  
Total depreciation and amortization 185,693 194,559 567,648 287,543  
Total interest expense 538,219 533,464 1,584,307 1,119,196  
Total assets 63,169,129   63,169,129   $ 64,677,633
Operating Segments [Member]          
Segment Reporting Information [Line Items]          
Total depreciation and amortization 185,693 194,559 567,648 287,543  
Umbilical Cord Blood and Cord Tissue Stem Cell Service [Member]          
Segment Reporting Information [Line Items]          
Total net revenue 7,820,877 7,945,470 23,558,484 23,716,492  
Total cost of sales 1,666,952 1,859,090 5,020,695 5,574,109  
Total operating profit 2,032,929 1,542,346 4,922,731 4,115,571  
Total assets 57,911,818   57,911,818   59,259,451
Umbilical Cord Blood and Cord Tissue Stem Cell Service [Member] | Operating Segments [Member]          
Segment Reporting Information [Line Items]          
Total depreciation and amortization 183,212 187,614 551,278 266,289  
Total interest expense 538,219 533,464 1,584,307 1,119,196  
PrepaCyte CB [Member]          
Segment Reporting Information [Line Items]          
Total net revenue 436 636 35,785 39,470  
Total cost of sales 2,295 1,220 13,537 37,083  
Total operating profit (4,340) (7,529) 5,878 (18,447)  
Total assets 92,684   92,684   138,169
PrepaCyte CB [Member] | Operating Segments [Member]          
Segment Reporting Information [Line Items]          
Total depreciation and amortization 2,481 6,945 16,370 20,834  
Public Cord Blood Banking [Member]          
Segment Reporting Information [Line Items]          
Total net revenue 4,119 120,609 128,886 205,799  
Total cost of sales 132,172 265,536 608,314 699,872  
Total operating profit (128,053) $ (144,927) (479,428) (494,493)  
Total assets $ 5,164,627   $ 5,164,627   $ 5,280,013
Public Cord Blood Banking [Member] | Operating Segments [Member]          
Segment Reporting Information [Line Items]          
Total depreciation and amortization       $ 420