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LOANS PAYABLE - Narrative (Details)			1 Months Ended	3 Months Ended
	Aug. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Aug. 31, 2015	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	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
LIBOR | Bank of America | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.00%
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				21,000	$ 59,000
Loans payable, face amount	$ 4,500,000			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				18,000	26,000
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				20,000	$ 19,000
Stated interest rate (as a percent)		2.75%
Loans payable, face amount		$ 4,000,000
Debt instrument, exchange period		4 years
Loans Payable | Former Shareholders
Debt Instrument [Line Items]
Interest on debt				$ 3,000
Stated interest rate (as a percent)				2.25%	1.41%
Baylor Klein, Ltd
Debt Instrument [Line Items]
Contingent consideration				$ 16,700,000

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