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. 11, 2018
Jun. 01, 2017
USD ($)
Feb. 01, 2012
USD ($)
Dec. 31, 2005
USD ($)
Feb. 28, 2022
USD ($)
Unit
Segment
Nov. 30, 2021
USD ($)
Feb. 28, 2021
USD ($)
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Number of reportable segments | Segment         3    
Deferred revenue         $ 41,210,138    
Warranty payment   $ 100,000 $ 75,000 $ 50,000      
Offset personal expenses   10,000          
Commission paid         15,152   $ 13,507
Additional capitalized contract acquisition costs, net of amortization expense         24,589   18,262
Impairment of contract assets         0   0
Impairment of public inventory           $ 1,164,499  
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         32,000   85,000
Unrealized holding (losses) gains, marketable securities         $ (9,000)   $ (3,000)
Payment warranty       $ 50,000      
Increased payment warranty   $ 100,000 $ 75,000        
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    
Option Two [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period         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.