REVENUE - Schedule of Revenue by (Details) - USD ($) $ in Thousands	3 Months Ended					9 Months Ended		12 Months Ended
	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 50,300	$ 49,017	$ 42,760	$ 38,285	$ 36,877	$ 147,171	$ 117,921	$ 166,939
Subscription and transaction fees
Disaggregation of Revenue [Line Items]
Revenue	42,143	38,234	34,686	33,214	33,108	123,956	101,008	139,242
Transaction fees
Disaggregation of Revenue [Line Items]
Revenue	27,509	24,365	21,002	20,454	19,677	80,704	61,133	85,498
Subscription fees
Disaggregation of Revenue [Line Items]
Revenue	14,634	13,869	13,684	12,760	13,431	43,252	39,875	53,744
Equipment sales
Disaggregation of Revenue [Line Items]
Revenue	$ 8,157	$ 10,783	$ 8,074	$ 5,071	$ 3,769	$ 23,215	$ 16,913	$ 27,697