CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Revenue	$ 38,461	$ 35,089
Costs and expenses:
Cost of revenues	4	88
Sales and marketing	1,215	3,241
Research and development	1,380	4,150
General and administrative	11,442	9,835
Total costs and expenses	14,041	17,314
Operating income	24,420	17,775
Interest and other income (loss), net	2,838	374
Other income (expense), net	(293)	(859)
Income before benefit from (provision for) income taxes	26,965	17,290
Benefit from (provision for) income taxes	3,699	(4,806)
Net income	$ 30,664	$ 12,484
Basic net income (loss) per share (in dollars per share)	$ 0.92	$ 0.40
Shares used in calculating basic net income (loss) per share (in shares)	33,280	31,459
Diluted net income (loss) per share (in dollars per share)	$ 0.92	$ 0.39
Shares used in calculating diluted net income (loss) per share (in shares)	33,508	31,769
Deferred gains (losses) on available-for-sale marketable debt securities	$ (944)	$ 290
Realized gains on available-for-sale marketable debt securities reclassified to net income	734	0
Total comprehensive income	30,454	12,774
Accumulated Deficit
Costs and expenses:
Net income	30,664	12,484
Royalty and license
Revenues:
Revenue	38,178	34,689
Development, services, and other
Revenues:
Revenue	$ 283	$ 400