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4. REVENUE RECOGNITION (Tables)

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table provides information about disaggregated revenue by timing of revenue recognition (in thousands):

		Three Months Ended March 31, 2023
		Product				Royalty				Contract
		revenue				revenue				revenue				Total
Timing of revenue recognition:
Products transferred at a point in time		$	590			$	—			$	—			$	590
Product and services transferred over time			—				—				192				192
Total		$	590			$	—			$	192			$	782
		Three Months Ended March 31, 2022
		Product				Royalty				Contract
		revenue				revenue				revenue				Total
Timing of revenue recognition:
Products transferred at a point in time		$	—			$	350			$	—			$	350
Product and services transferred over time			—				—				—				—
Total		$	—			$	350			$	—			$	350

Significant Changes in Contract Assets and Contract Liabilities

Significant changes in the contract assets and the contract liabilities balances during the period are as follows (in thousands, except percentages):    

		March 31, 2023				December 31, 2022				$ Change				% Change
Contract assets		$	192			$	—			$	192				—
Contract liabilities			(5,676	)			(4,601	)			(1,075	)			23.4
Net contract assets (liabilities)		$	(5,484	)		$	(4,601	)		$	(883	)			19.2

Estimated Timing of Revenue Recognition

The following table provides information about the estimated timing of revenue recognition (in thousands):

		Remainder of 2023				2024
Revenue		$	1,075			$	—

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045

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X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045

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- References

No definition available.

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X

- Definition

Tabular disclosure of expected timing for satisfying remaining performance obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045

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