Stockholders' Equity - Additional Information (Detail) - USD ($)			1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 23, 2022	Apr. 08, 2022	May 30, 2012	May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024	Nov. 30, 2024	Mar. 26, 2024	Dec. 01, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares						103,000
Weighted average grant date fair value of options granted						$ 2.58	$ 3.13
Service-Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares						103,000
Exercised, Weighted Average Exercise Price						$ 0
Number of share issued to option holder				0	0	0	0
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted				$ 298,000		$ 298,000
Performance and Market-Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted				$ 0		0
Market Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period		7 years
Market Based Vesting Condition Options [Member] \| Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation options fair value						$ 80,000	$ 196,000
O 2025 Q1 Dividends [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date declared						Jan. 24, 2025
Dividends declared						$ 0.25
Date of record						Feb. 14, 2025
Dividend payable date						Feb. 28, 2025
O 2025 Q2 Dividends [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Date declared				May 07, 2025
Dividends declared				$ 0.15
Date of record				May 21, 2025
Dividend payable date				May 30, 2025
2006 Plan [Member] \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock for issuance pursuant to stock options or restricted stock				1,000,000		1,000,000
Option issued				15,000		15,000		15,000
Shares issued under stock incentive plan				0		0
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock for issuance pursuant to stock options or restricted stock										1,500,000
Shares issued under stock incentive plan				0		0
2012 Plan [Member] \| Service Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares							188,578	188,578
2012 Plan [Member] \| Service Based Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares						129,729		129,729
2012 Plan [Member] \| Performance Based Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares						530,851		530,851
2012 Plan [Member] \| Market Based Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares						116,218		116,218
2012 Plan [Member] \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in common stock reserved for issuance			2,500,000
2022 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock for issuance pursuant to stock options or restricted stock		1,500,000
Shares issued under stock incentive plan				621,700		621,700
2022 Equity Incentive Plan [Member] \| Service Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares						348,300		290,300
2022 Equity Incentive Plan [Member] \| Market Based Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares						475,000		475,000
Employment Agreements [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee agreements period	2 years
Employment Agreements [Member] \| Performance and Market-Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted				$ 0		$ 0
Employment Agreements [Member] \| Market Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period	5 years
Employment Agreements [Member] \| Market Based Vesting Condition Options [Member] \| Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation options fair value						$ 0	$ 52,000
Stock Option [Member] \| Service-Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares				0	0	103,000	103,000
Weighted-average period						2 years 7 days
Total fair value of shares vested						$ 319,000
Stock Option [Member] \| Market Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares		400,000
Exercised, Weighted Average Exercise Price		$ 12.27
Weighted average grant date fair value of options granted		2.79
Price per share		$ 25
Stock Option [Member] \| Market Based Vesting Condition Options [Member] \| David Portnoy [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares		280,000
Stock Option [Member] \| Market Based Vesting Condition Options [Member] \| Mark Portnoy [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares		100,000
Stock Option [Member] \| Market Based Vesting Condition Options [Member] \| Oleg Mikulinksy [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares		20,000
Stock Option [Member] \| Employment Agreements [Member] \| Market Based Vesting Condition Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised, Weighted Average Exercise Price	$ 4.3
Weighted average grant date fair value of options granted	1.76
Price per share	$ 8								$ 8
Stock Option [Member] \| Employment Agreements [Member] \| Market Based Vesting Condition Options [Member] \| David Portnoy [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares	50,000
Stock Option [Member] \| Employment Agreements [Member] \| Market Based Vesting Condition Options [Member] \| Mark Portnoy [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares	25,000

CRYO CELL INTERNATIONAL INC 10-Q