Organization and Summary of Significant Accounting Policies - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	$ 12,211	$ 18,084	$ 15,348
Restricted cash included in other assets	7,417	14,361	18,605
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 19,628	$ 32,445	$ 33,953	$ 29,865
Additional cash and cash equivalent related text	Our restricted cash consists of cash held in escrow by banks for real estate taxes and other purposes.