Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.2
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 ($)
May 31, 2022
USD ($)
Nov. 30, 2021
USD ($)
May 31, 2021
USD ($)
May 31, 2022
USD ($)
Unit
Segment
May 31, 2021
USD ($)
Apr. 08, 2022
shares
Feb. 28, 2022
Business, Basis of Presentation and Significant Accounting Policies [Line Items]                      
Number of reportable segments | Segment               3      
Deferred revenue         $ 42,664,189     $ 42,664,189      
Warranty payment   $ 100,000 $ 75,000 $ 50,000              
Commission paid         12,169   $ 8,198 27,321 $ 21,705    
Additional capitalized contract acquisition costs, net of amortization expense         27,170   27,672 51,759 45,934    
Impairment of contract assets         0     0      
Impairment of public inventory           $ 1,164,499          
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      
Stock-based option compensation expense         117,000   68,000 149,000 153,000    
Unrealized Gain Loss on Marketable Securities         $ 18,000   $ 13,000 $ 27,000 $ 15,000    
Payment warranty       $ 50,000              
Increased payment warranty   $ 100,000 $ 75,000                
Common Stock Issued | shares                   1,500,000  
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
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               12      
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               144      
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.