Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 01, 2017
USD ($)
Feb. 01, 2012
USD ($)
Dec. 31, 2005
USD ($)
May 31, 2020
USD ($)
CompensationPlan
May 31, 2019
USD ($)
Feb. 28, 2019
USD ($)
May 31, 2020
USD ($)
Segments
CompensationPlan
Unit
May 31, 2019
USD ($)
Dec. 01, 2018
USD ($)
Debt Securities, Available-for-sale [Line Items]                  
Number of reportable segments | Segments             3    
Deferred revenue       $ 34,152,100     $ 34,152,100    
Deferred revenue current       8,839,718     8,839,718    
Warranty payment $ 100,000 $ 75,000 $ 50,000            
Offset personal expenses 10,000                
Commission paid       11,609 $ 7,826   23,144 $ 14,469  
Capitalized contract acquisition costs, net of amortization expense                 $ 329,231
Cumulative amortization expense                 $ 66,533
Additional capitalized contract acquisition costs, net of amortization expense       22,481 23,534   45,801 44,488  
Provisions for interest or penalties related to uncertain tax positions       0 0   0 0  
Uncertain tax provisions       0 0   0 0  
Impairment on long lived assets       $ 0 0   $ 0 0  
Number of employee stock based compensation plan | CompensationPlan       2     2    
Cumulative-effect adjustment from accumulated other comprehensive income to retained earnings           $ 341,000      
Unrealized holding gain (losses), marketable securities       $ 54,000 31,000   $ 1,000 36,000  
Payment warranty     $ 50,000            
Increased payment warranty $ 100,000 75,000              
Additional payment warranty   $ 10,000              
Impairment charges       2,332,763 2,332,763     2,332,763  
Stock-based option compensation expense       $ 64,000 $ 87,000   $ 289,000 $ 226,000  
Deferred revenue recognition period             12 months    
Option One [Member]                  
Debt Securities, Available-for-sale [Line Items]                  
Contracted storage amortization period       20 months     20 months    
Option Two [Member]                  
Debt Securities, Available-for-sale [Line Items]                  
Contracted storage amortization period       1 year     1 year    
Option Three [Member]                  
Debt Securities, Available-for-sale [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.    
Accounts Receivables [Member]                  
Debt Securities, Available-for-sale [Line Items]                  
Period of doubtful for accounts receivable due from client             30 days    
Umbilical Cord Blood and Cord Tissue Stem Cell Service and PrepaCyte-CB [Member]                  
Debt Securities, Available-for-sale [Line Items]                  
Number of reportable segments | Segments             3    
Umbilical Cord Blood and Cord Tissue Stem Cell Service and PrepaCyte-CB [Member] | Duke University [Member]                  
Debt Securities, Available-for-sale [Line Items]                  
Inventory, in units | Unit             6,000    
Number of units, per month | Unit             12    
Umbilical Cord Blood and Cord Tissue Stem Cell Service and PrepaCyte-CB [Member] | Duke University [Member] | Maximum [Member]                  
Debt Securities, Available-for-sale [Line Items]                  
Inventory, in units | Unit             144