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SIGNIFICANT ACCOUNTING POLICIES - Breakdown of net revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
SIGNIFICANT ACCOUNTING POLICIES
Total revenue	$ 48,805	$ 41,520	$ 36,759	$ 31,083	$ 40,367	$ 34,785	$ 31,022	$ 24,127	$ 158,167	$ 130,301
Device revenue
SIGNIFICANT ACCOUNTING POLICIES
Purchased									14,393	9,240
Leased									29,104	27,373
Total revenue									43,497	36,613
Supplies revenue
SIGNIFICANT ACCOUNTING POLICIES
Total revenue									$ 114,670	$ 93,688

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