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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 ($) | Nov. 30, 2023 USD ($) | Nov. 30, 2022 USD ($) | Nov. 30, 2023 USD ($) Unit Segment | Nov. 30, 2022 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 |  |  |  | $ 50,891,353 |  | $ 50,891,353 |
Warranty payment | $ 100,000 | $ 75,000 | $ 50,000 |  |  |  |
Commission paid |  |  |  |  |  | 41,056 | $ 50,977
Additional capitalized contract acquisition costs, net of amortization expense |  |  |  |  |  | 114,139 | 109,673
Impairment of contract assets |  |  |  |  |  | 0 | 0
Impairment of public inventory |  |  |  | 3,737,133 | $ 0 | 3,737,133 | 0
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 |  |  |  |  |  | 952,586 | 755,921
Losses on marketable securities |  |  |  |  |  | 51,000 | (39,000)
Gain on interest rate swap |  |  |  |  |  | 122,113 | 446,200
Payment warranty |  |  | $ 50,000 |  |  |  |
Increased payment warranty | $ 100,000 | $ 75,000 |  |  |  |  |
Stock-based option compensation expense |  |  |  |  |  | $ 817,000 | $ 461,000
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 |  |  |  |  |  |  | 635,301
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 |  |  |  |  |  | 36 |
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 |  |  |  |  |  | 36 |
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. |

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