Organization and Summary of Significant Accounting Policies - Schedule of Distributions Paid to Shareholders (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Component Of Operating Cost And Expense [Line Items]
Ordinary income	$ 0	$ 0
Non-dividend distributions	0	0.23
Per-share distributions	0	0.23
Series B Preferred Stock
Component Of Operating Cost And Expense [Line Items]
Ordinary income	0	0
Non-dividend distributions	0	0.92
Per-share distributions	0	0.92
Series C Preferred Stock
Component Of Operating Cost And Expense [Line Items]
Ordinary income	0	0
Non-dividend distributions	0	0.90
Per-share distributions	0	0.90
Series D Preferred Stock
Component Of Operating Cost And Expense [Line Items]
Ordinary income	0	0
Non-dividend distributions	0	0.86
Per-share distributions	$ 0	$ 0.86