Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

Revenue Recognition

Schedule of disaggregation of revenues

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

		Three Months Ended March 31, 2021
		Product		Royalty		Contract
		revenue		revenue		revenue		Total
Timing of revenue recognition:
Products transferred at a point in time	$	-	$	479	$	-	$	479
Product and services transferred over time		-		-		-		-
Total	$	-	$	479	$	-	$	479

		Three Months Ended March 31, 2020
		Product		Royalty		Contract
		revenue		revenue		revenue		Total
Timing of revenue recognition:
Products transferred at a point in time	$	1,247	$	212	$	4	$	1,463
Product and services transferred over time		-		-		6		6
Total	$	1,247	$	212	$	10	$	1,469

Schedule of contract assets and liabilities

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

		March 31,		December 31,
		2021		2020		$ Change	% Change
Contract assets	$	-	$	-	$	-	-
Contract liabilities		(7,286)		(7,765)		479	(6.2)
Net contract assets (liabilities)	$	(7,286)	$	(7,765)	$	479	(6.2)

Transaction price allocated to the remaining performance obligations, expected timing

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

		Remainder of 2021		2022
License and royalty revenue	$	2,743	$	-