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LOANS PAYABLE - Narrative (Details)			3 Months Ended		6 Months Ended
	Aug. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)	Aug. 23, 2019 USD ($)	May 31, 2018 USD ($)	Apr. 30, 2018 GBP (£)
Bank of America | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity								$ 100,000,000
Outstanding line of credit			$ 0		$ 0
2019 Line of Credit, Expansion Option | Bank of America | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity								$ 200,000,000
Loans Payable | Non Interest Bearing Unsecured Convertible Loan
Debt Instrument [Line Items]
Interest on debt			1,000	$ 35,000	22,000	$ 94,000
Loans payable, face amount	$ 4,500,000		20,300,000		20,300,000					£ 10,500,000
Debt instrument, exchange period	3 years
Loans Payable | 2.88% Loans Payable
Debt Instrument [Line Items]
Interest on debt			0	27,000	18,000	53,000
Stated interest rate (as a percent)									2.88%
Loans payable, face amount									$ 2,800,000
Loans Payable | 2.75% Loans Payable
Debt Instrument [Line Items]
Interest on debt			21,000	$ 20,000	41,000	$ 39,000
Stated interest rate (as a percent)		2.75%
Loans payable, face amount		$ 4,000,000
Debt instrument, exchange period		4 years
Baylor Klein, Ltd
Debt Instrument [Line Items]
Contingent consideration			$ 17,100,000		$ 17,100,000		$ 17,600,000

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