CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues:
Revenue	$ 14,006	$ 7,173	$ 29,297	$ 25,342
Costs and expenses:
Cost of revenues	0	8	4	78
Sales and marketing	282	443	986	2,743
Research and development	254	803	1,118	3,442
General and administrative	2,540	2,246	8,550	7,106
Total costs and expenses	3,076	3,500	10,658	13,369
Operating income	10,930	3,673	18,639	11,973
Interest and other income (loss), net	(2,348)	438	(6,413)	162
Income before provision for income taxes	8,582	4,111	12,226	12,135
Provision for income taxes	(877)	(340)	(1,264)	(987)
Net income	$ 7,705	$ 3,771	$ 10,962	$ 11,148
Basic net income (loss) per share (in dollars per share)	$ 0.23	$ 0.12	$ 0.33	$ 0.36
Shares used in calculating basic net income (loss) per share (in shares)	33,201	32,474	33,601	30,693
Diluted net income (loss) per share (in dollars per share)	$ 0.23	$ 0.12	$ 0.32	$ 0.36
Shares used in calculating diluted net income (loss) per share (in shares)	33,682	32,612	34,035	31,065
Other comprehensive income, net of tax
Change in unrealized gains (losses) on available-for-sale securities	$ 344	$ 531	$ (469)	$ 531
Total comprehensive income	8,049	4,302	10,493	11,679
Royalty and license
Revenues:
Revenue	13,931	7,068	29,079	25,017
Development, services, and other
Revenues:
Revenue	$ 75	$ 105	$ 218	$ 325