Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.2
Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 11, 2018
Jun. 01, 2017
USD ($)
Feb. 01, 2012
USD ($)
Dec. 31, 2005
USD ($)
May 31, 2023
USD ($)
May 31, 2022
USD ($)
May 31, 2023
USD ($)
Unit
May 31, 2022
USD ($)
Business, Basis of Presentation and Significant Accounting Policies [Line Items]                
Deferred revenue         $ 48,108,050   $ 48,108,050  
Warranty payment   $ 100,000 $ 75,000 $ 50,000        
Commission paid         10,958 $ 12,169 21,390 $ 27,321
Additional capitalized contract acquisition costs, net of amortization expense         28,512 27,170 54,948 51,759
Impairment of contract assets         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         157,000 117,000 470,000 149,000
Unrealized holding (losses) gains, marketable securities         11,000 (18,000) 7,000 (27,000)
Payment warranty       $ 50,000        
Increased payment warranty   $ 100,000 $ 75,000          
Loss on interest rate swap         $ (223,974) $ 0 $ (223,974) $ 0
Cord:Use [Member]                
Business, Basis of Presentation and Significant Accounting Policies [Line Items]                
Acquisition date Jun. 11, 2018              
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]                
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           21 years   21 years
Option Two [Member]                
Business, Basis of Presentation and Significant Accounting Policies [Line Items]                
Contracted storage amortization period         1 year   1 year  
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.