Quarterly report pursuant to Section 13 or 15(d)

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

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Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended
Jun. 01, 2017
USD ($)
Feb. 01, 2012
USD ($)
Dec. 31, 2005
USD ($)
Feb. 29, 2024
USD ($)
Unit
Segment
Feb. 28, 2023
USD ($)
Feb. 22, 2024
shares
Business, Basis of Presentation and Significant Accounting Policies [Line Items]            
Number of reportable segments | Segment       3    
Deferred revenue       $ 51,998,482    
Warranty payment $ 100,000 $ 75,000 $ 50,000      
Offset personal expenses 10,000          
Commission paid       11,052 $ 10,432  
Additional capitalized contract acquisition costs, net of amortization expense       30,179 26,436  
Impairment of contract assets       0 0  
Uncertain tax provisions       0    
Provisions for interest or penalties related to uncertain tax positions       0 0  
Impairment on long lived assets       0 0  
Stock-based option compensation expense       307,000 313,000  
Unrealized holding (losses) gains, marketable securities       275,000 (4,000)  
Loss on interest rate swap       $ (45,288) $ 0  
Payment warranty     $ 50,000      
Increased payment warranty $ 100,000 $ 75,000        
Celle Corp [Member]            
Business, Basis of Presentation and Significant Accounting Policies [Line Items]            
Number of shares issued | shares           0
Duke University [Member]            
Business, Basis of Presentation and Significant Accounting Policies [Line Items]            
Contracted storage amortization period       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]            
Agreement expiration date       Jan. 31, 2025    
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    
Option Two [Member]            
Business, Basis of Presentation and Significant Accounting Policies [Line Items]            
Contracted storage amortization period       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 concluded that additional data analysis would result in an immaterial difference in revenue.