Annual report pursuant to Section 13 and 15(d)

Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail)

v3.22.0.1
Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 01, 2017
USD ($)
Feb. 01, 2012
USD ($)
Dec. 31, 2005
USD ($)
Nov. 30, 2021
USD ($)
Nov. 30, 2020
USD ($)
Nov. 30, 2021
USD ($)
Unit
Segment
shares
Nov. 30, 2020
USD ($)
shares
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Number of reportable segments | Segment           3  
Concentration risk related to supplier           The Company depends on one supplier for the source of its collection kits  
Deferred revenue       $ 40,632,910   $ 40,632,910  
Warranty payment $ 100,000 $ 75,000 $ 50,000        
Commission paid           49,378 $ 49,609
Additional capitalized contract acquisition costs, net of amortization expense           95,168 89,471
Impairment of contract assets           0 0
Impairment of public inventory       1,164,499 $ 1,284,238 1,164,499 1,284,238
Impairment on long lived assets           0 0
Uncertain tax provisions       $ 0 $ 0 0 0
Provisions for interest or penalties related to uncertain tax positions           0 0
Advertising cost included in selling, general and administrative expenses           841,514 845,454
Losses on marketable securities           (13,000) (8,000)
Payment warranty     $ 50,000        
Increased payment warranty $ 100,000 $ 75,000          
Stock-based option compensation expense           $ 302,000 $ 622,000
Employee Stock Incentive Plan [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Number of outstanding options excluded from computation of diluted earnings per share | shares           15,900 249,301
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           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       1 year   1 year  
Option Two [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period       18 years   18 years  
Option Three [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period       21 years   21 years  
Option Four [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Contracted storage amortization period           lifetime  
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.  
ASU 2016-02 [Member]              
Business, Basis of Presentation and Significant Accounting Policies [Line Items]              
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]       true   true  
Change in Accounting Principle, Accounting Standards Update, Adoption Date       Dec. 01, 2019   Dec. 01, 2019  
Change In Accounting Principle Accounting Standards Update Transition Option Elected [Extensible List]           us-gaap:AccountingStandardsUpdate201602RetrospectiveMember