Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income (Loss)
Net income	$ 4,971	$ 15,166
Other comprehensive income (loss):
Unrealized gain (loss) on marketable securities	82	(51)
Total other comprehensive income (loss)	82	(51)
Total comprehensive income	$ 5,053	$ 15,115