STOCK-BASED COMPENSATION - Weighted-average Assumption to Estimate Fair Value of Stock Options Granted (Details) - OLD PlayStudios, Inc. - Stock options - $ / shares	3 Months Ended	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	5 years 10 months 10 days	5 years 10 months 6 days
Expected volatility	51.24%	58.45%
Risk-free interest rate range, minimum	0.54%	0.41%
Risk-free interest rate range, maximum	0.60%	0.47%
Dividend yield	0.00%	0.00%
Grant-date fair value	$ 0.52	$ 0.29
Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)			5 years 11 months 16 days	5 years 11 months 5 days	5 years 11 months 27 days
Expected volatility			59.56%	70.00%	63.12%
Risk-free interest rate range, minimum			0.24%	1.54%	2.77%
Risk-free interest rate range, maximum			0.51%	2.59%	3.13%
Dividend yield			0.00%	0.00%	0.00%
Grant-date fair value			$ 0.60	$ 0.27	$ 0.19

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

No definition available.

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- Definition

The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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