Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 6 Months Ended
Dec. 01, 2018
USD ($)
Jun. 01, 2017
USD ($)
Feb. 01, 2012
USD ($)
Dec. 31, 2005
USD ($)
May 31, 2019
USD ($)
CompensationPlan
Feb. 28, 2019
USD ($)
May 31, 2018
USD ($)
May 31, 2019
USD ($)
Segments
CompensationPlan
Unit
shares
May 31, 2018
USD ($)
Nov. 30, 2018
USD ($)
Debt Securities, Available-for-sale [Line Items]                    
Deferred revenue         $ 30,500,610     $ 30,500,610    
Deferred revenue current         8,516,593     8,516,593    
Warranty payment   $ 100,000 $ 75,000 $ 50,000            
Offset personal expenses   10,000                
Commission paid         7,826     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         20,954     23,534    
Valuation allowance         1,634,000     1,634,000   $ 1,634,000
U.S. Income tax expense (benefit)         29,000   $ 294,000 134,000 $ 3,497,000  
Income tax expense related to the reduction of the federal tax               $ 2,985,000    
Federal tax rate               21.00%    
Foreign Income Tax Expense         22,000   22,000 $ 22,000 22,000  
Minimum percentage probability of realized tax benefit on settlement               50.00%    
Provisions for interest or penalties related to uncertain tax positions         0       0  
Uncertain tax provisions         0   0 $ 0 0  
Impairment on long lived assets               0 0  
Goodwill         $ 1,941,411     $ 1,941,411   $ 1,941,411
Number of employee stock based compensation plan | CompensationPlan         2     2    
Stock-based option compensation expense         $ 87,000   156,000 $ 226,000 268,000  
Unrealized holding losses, trading securities             9,016 25,208 (25,208)  
Unrealized (loss) gain on marketable securities, net of tax             1,254   120,000  
Cumulative-effect adjustment from accumulated other comprehensive income to retained earnings           $ 341,000        
Unrealized holding losses, marketable securities         31,000     $ (36,000)    
Payment warranty       $ 50,000            
Increased payment warranty   $ 100,000 75,000              
Additional payment warranty     $ 10,000              
Stock compensation expense reversed             $ 444,000      
Stock compensation, number of shares opted to lump sum cash payment | shares               30,000    
Impairment charges         2,332,763     $ 2,332,763    
Duke University [Member]                    
Debt Securities, Available-for-sale [Line Items]                    
Asset purchase agrrement closing date               Jan. 31, 2020    
Accounting Standards Update 2014-09 [Member]                    
Debt Securities, Available-for-sale [Line Items]                    
Incremental contract acquisition cost 329,231                  
Reversed incremental acquisition cost 18,408                  
ASC 606 adoption adjustment, net of tax 253,447           $ 253,447    
Cumulative effect on retained earnings, tax $ 94,192                  
Option One [Member]                    
Debt Securities, Available-for-sale [Line Items]                    
Contracted storage amortization period         21 years     21 years    
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    
Previously Reported [Member]                    
Debt Securities, Available-for-sale [Line Items]                    
Unrealized (loss) gain on marketable securities, net of tax                 $ 120,000  
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               5,977    
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