Quarterly report [Sections 13 or 15(d)]

Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)

v3.26.1
Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 01, 2017
USD ($)
Feb. 01, 2012
USD ($)
Dec. 31, 2005
USD ($)
May 31, 2026
USD ($)
May 31, 2025
USD ($)
May 31, 2026
USD ($)
Unit
Segment
May 31, 2025
USD ($)
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Number of reportable segments | Segment           3  
Deferred revenue       $ 62,767,907   $ 62,767,907  
Warranty payment $ 100,000 $ 75,000 $ 50,000        
Offset personal expenses 10,000            
Commission paid       6,375 $ 9,132 13,619 $ 18,483
Additional capitalized contract acquisition costs, net of amortization expense       29,789 29,391 60,875 60,841
Impairment of contract assets       0 0 0 0
Uncertain tax provisions       0   0  
Provisions for interest or penalties related to uncertain tax positions           0 0
Impairment on long lived assets       0 0 0 0
Stock-based option compensation expense       64,000 40,000 223,000 337,000
Unrealized holding (losses) gains, marketable securities       72,019 (379,332) (168,439) (410,733)
Payment warranty     $ 50,000        
Increased payment warranty $ 100,000 $ 75,000          
Other Nonoperating Income (Expense) [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Unrealized holding (losses) gains, marketable securities       $ 72,000 $ (380,000) $ (168,000) $ (411,000)
Duke University [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period       16 years   16 years  
Umbilical Cord Blood and Cord Tissue Stem Cell Service and PrepaCyte-CB [Member] | Duke University [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Inventory, in units | Unit           6,000  
Number of units, per month | Unit           36  
Maximum [Member] | Umbilical Cord Blood and Cord Tissue Stem Cell Service and PrepaCyte-CB [Member] | Duke University [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Inventory, in units | Unit           36  
Accounts Receivables [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Period of doubtful for accounts receivable due from client           30 days  
Option One [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period       1 year   1 year  
Option Two [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period       21 years   21 years  
Option Three [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period           life-time  
Contracted storage amortization description           The life-time storage plan is based on a life expectancy of 81 years, which is the current estimate by the Center for Disease Control for United States women’s life expectancy and the Company concluded that additional data analysis would result in an immaterial difference in revenue recognition.