CONSOLIDATED STATEMENTS OF COMPRHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Consolidated net income attributable to common stockholders	$ 3,586	$ 7,004
Other comprehensive (loss)/income:
Net unrealized (loss)/income on investments in available-for-sale debt securities	(9,778)	1,306
Income tax expense related to items of other comprehensive income	0	0
Comprehensive (loss)/income	$ (6,192)	$ 8,310