Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2019

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, 2019
		Product		Royalty		Contract
		revenue		revenue		revenue		Total
Timing of revenue recognition:
Products transferred at a point in time	$	199	$	-	$	16	$	215
Product and services transferred over time		-		-		1,636		1,636
Total	$	199	$	-	$	1,652	$	1,851

		Three Months Ended March 31, 2018
		Product		Royalty		Contract
		revenue		revenue		revenue		Total
Timing of revenue recognition:
Products transferred at a point in time	$	-	$	11	$	99	$	110
Product and services transferred over time		-		-		2,078		2,078
Total	$	-	$	11	$	2,177	$	2,188

Costs in excess of billings and billings in excess of costs

The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers (in thousands):

		March 31,		December 31,
		2019		2018
Accounts receivable, net	$	274	$	476
Costs and estimated earnings in excess of billings on uncompleted contracts		1,199		987
Billings on uncompleted contracts in excess of related costs		5		-
Other current liabilities		10,000		10,000

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,
		2019		2018		$ Change	% Change
Contract assets	$	1,199	$	987	$	212	21.5
Contract liabilities		(5)		-		(5)	-
Net contract assets (liabilities)	$	1,194	$	987	$	207	21.0

Transaction price allocated to the remaining performance obligations, expected timing

Additionally, the estimated revenue does not include amounts of variable consideration attributable to royalties or unexercised contract renewals (in thousands):

		Remainder of 2019		2020
Product revenue	$	-	$	-
License and royalty revenue		-		-
Contract revenue		1,301		-