SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)		12 Months Ended
	Jul. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2022	Aug. 14, 2021	Apr. 30, 2020	Mar. 27, 2018
Property, Plant and Equipment [Line Items]
Impairment charges		$ 0	$ 0
Instrument warranty term		1 year
Kits and accessories warranty term		60 days
Gross margin percentage		26.00%	(3.00%)	40.00%
Inventory write-down		$ 0	$ 4,500,000	$ 0
Pre-launch inventory expenses		$ 600,000	200,000	100,000
Restructuring expenses				$ 400,000
Lease extension		1 year
Finance lease term		3 years
Lessor term of contract		5 years
Dividend yield (percent)		0.00%
Decrease in accumulated deficit		$ (607,239,000)	(570,668,000)
Cumulative impact of accounting change | Accounting Standards Update 2020-06
Property, Plant and Equipment [Line Items]
Total convertible notes					$ 11,500,000
Decrease in additional-paid-in-capital					37,400,000
Decrease in accumulated deficit					$ 25,900,000
2.50% Convertible Notes due 2023 | Convertible Notes
Property, Plant and Equipment [Line Items]
Interest rate								2.50%
Aggregate principal amount								$ 150,000,000
Total convertible notes		$ 56,413,000	$ 107,984,000
PPP loan | PPP Loan
Property, Plant and Equipment [Line Items]
Interest rate						1.00%
Aggregate principal amount							$ 4,800,000
Full loan forgiveness	$ 4,800,000
Diagnostic instruments
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		5 years
Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		1 year
Operating leases term		2 years
Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life		7 years
Operating leases term		6 years