Crown Electrokinetics Corp. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation, Restricted Stock and Stock Options: (Details)

Stock-Based Compensation, Restricted Stock and Stock Options: (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Mar. 31, 2021	Dec. 16, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jan. 31, 2021
Stock-Based Compensation, Restricted Stock and Stock Options: (Details) [Line Items]
Common stock shares issued (in Shares)		5,333,333
Expire term		10 years
Equity compensation plan information, description		The available shares in the 2020 Plan will automatically increase on the first trading day in January of each calendar year during the term of this Plan, commencing with January 2021, by an amount equal to the lesser of (i) five percent (5%) of the total number of shares of common stock issued and outstanding on December 31 of the immediately preceding calendar year, (ii) 1,000,000 shares of common stock or (iii) such number of shares of common stock as may be established by the Company’s Board of Directors.
Number of shares allocated (in Shares)			7,333,333		7,333,333
Fair value			$ 4.1		$ 4.1		$ 4.7
Granted restricted stock shares (in Shares)					800,000
Rrestricted stock shares issued (in Shares)					800,000
Restricted stock awards vested (in Shares)			66,666		66,666
Vested restricted stock awards (in Shares)					88,888
Unvested restricted stock awards (in Shares)			711,112		711,112
Options purchase shares (in Shares)	66,667
Stock-based compensation					$ 0.2
Common stock warrants shares (in Shares)					550,724
Fair value of warrants					$ 0.7
Chief Executive Officer [Member]
Stock-Based Compensation, Restricted Stock and Stock Options: (Details) [Line Items]
Common stock shares issued (in Shares)							1,061,905
Chief Financial Officer [Member]
Stock-Based Compensation, Restricted Stock and Stock Options: (Details) [Line Items]
Fair value			$ 1.3		$ 1.3
Granted restricted stock shares (in Shares)					400,000
Board of Directors Chairman [Member]
Stock-Based Compensation, Restricted Stock and Stock Options: (Details) [Line Items]
Fair value			1.9		$ 1.9
Options granted (in Shares)					1,227,204
Restricted stock units [Member]
Stock-Based Compensation, Restricted Stock and Stock Options: (Details) [Line Items]
Stock-based compensation			2.0	$ 0.2		$ 4.5
Unrecognized stock-based compensation			4.4		$ 4.4
Restricted stock units [Member]
Stock-Based Compensation, Restricted Stock and Stock Options: (Details) [Line Items]
Stock-based compensation					3.8
Restricted Stock Awards [Member]
Stock-Based Compensation, Restricted Stock and Stock Options: (Details) [Line Items]
Stock-based compensation			0.3	$ 0.6	0.9	$ 4.4
Unrecognized stock-based compensation			$ 1.4		$ 1.4
Vesting period					1 year 8 months 12 days