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LEASES - Narrative (Details) $ in Thousands			3 Months Ended
	Jan. 01, 2021 USD ($)	Aug. 01, 2014 renewal_option	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020	Jun. 16, 2016	Apr. 01, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets			$ 4,979	$ 5,246
Lease liabilities			$ 5,555
Renewal term			3 years
Weighted-average remaining lease term			4 years 7 months 6 days
Weighted-average discount rate			3.74%
Office space and manufacturing space location 1
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Renewal term			5 years
Lease term							10 years
Base rent			$ 324
Lease escalation factor			3.00%
Office space and manufacturing space location 2
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Renewal term		2 years			3 years
Lease term		4 years
Base rent			$ 106
Lease escalation factor			3.00%
Number of renewal options | renewal_option		2
Office space and manufacturing space location 3
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease term						10 years
Base rent			$ 825
Lease escalation factor			3.00%
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease terms			1 year
Renewal term			1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease terms			5 years
Renewal term			5 years
Line of Credit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basis spread on variable interest rate	3.00%
Interest rate	3.40%
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 6,298
Lease liabilities	$ 6,875

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