Revenue (Tables)

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

The following table presents the disaggregation of our revenue for the three months ended March 31, 2020 and 2019 (in thousands):

	Three months ended March 31,
	2020		2019			Increase/(Decrease)
Variable patent royalty revenue	$	5,946	$	9,280		$	(3,334	)	(36	)%
Fixed-fee royalty revenue	66,347		62,873			3,474			6	%
Current patent royalties a	72,293		72,153			140			—	%
Non-current patent royalties b	705		(5,775		)	6,480			112	%
Total patent royalties	72,998		66,378			6,620			10	%
Current technology solutions revenue a	3,212		2,028			1,184			58	%
Patent sales b	—		225			(225		)	—	%
Total revenue	$	76,210	$	68,631		$	7,579		11	%

a. Recurring revenues are comprised of current patent royalties, inclusive of Dynamic Fixed-Fee Agreement royalties, and current technology solutions revenue.

b.

Non-recurring revenues are comprised of non-current patent royalties, which primarily include past patent royalties and royalties from static agreements, as well as patent sales.

Schedule of contracted revenue

Based on contracts signed and committed as of March 31, 2020, we expect to recognize the following revenue from Dynamic Fixed-Fee Agreement payments over the term of such contracts (in thousands):

	Revenue
Remainder 2020	$	194,989
2021	191,401
2022	86,728
2023	—
2024	—