Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
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 ($)
Feb. 29, 2020
USD ($)
Segments
CompensationPlan
Unit
Feb. 28, 2019
USD ($)
May 31, 2019
USD ($)
Dec. 01, 2018
USD ($)
Debt Securities, Available-for-sale [Line Items]              
Deferred revenue       $ 33,065,271      
Deferred revenue current       8,610,304      
Warranty payment $ 100,000 $ 75,000 $ 50,000        
Offset personal expenses 10,000            
Commission paid       11,535 $ 6,643    
Capitalized contract acquisition costs, net of amortization expense             $ 329,231
Cumulative amortization expense             $ 66,533
Additional capitalized contract acquisition costs, net of amortization expense       23,320 20,954    
Provisions for interest or penalties related to uncertain tax positions       0 0    
Uncertain tax provisions       0 0    
Impairment on long lived assets       $ 0 0    
Number of employee stock based compensation plan | CompensationPlan       2      
Cumulative-effect adjustment from accumulated other comprehensive income to retained earnings         341,000    
Unrealized holding gain (losses), marketable securities       $ 55,000 67,000    
Payment warranty     $ 50,000        
Increased payment warranty $ 100,000 75,000          
Additional payment warranty   $ 10,000          
Impairment charges           $ 2,332,763  
Stock-based option compensation expense       $ 224,000 $ 139,000    
Deferred revenue recognition period       12 months      
Option One [Member]              
Debt Securities, Available-for-sale [Line Items]              
Contracted storage amortization period       20 years      
Option Two [Member]              
Debt Securities, Available-for-sale [Line Items]              
Contracted storage amortization period       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