STOCK-BASED COMPENSATION - 2017 MANAGEMENT AGREEMENT (Details) - shares	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Time-based
Stock-based compensation
Granted (in shares)	668,000
2017 Management Agreement | Zelnick Media Corporation
Stock-based compensation
Granted (in shares)	316,000	297,000
2017 Management Agreement | Zelnick Media Corporation | Time-based
Stock-based compensation
Granted (in shares)	92,000	86,000
2017 Management Agreement | Zelnick Media Corporation | Market-based
Stock-based compensation
Granted (in shares)	168,000	158,000
2017 Management Agreement | Zelnick Media Corporation | Total-Performance-based
Stock-based compensation
Granted (in shares)	56,000	53,000
2017 Management Agreement | Zelnick Media Corporation | IP
Stock-based compensation
Granted (in shares)	28,000	27,000
2017 Management Agreement | Zelnick Media Corporation | Recurrent Consumer Spending ("RCS")
Stock-based compensation
Granted (in shares)	28,000	26,000