Organization and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Cash and cash equivalents	$ 62,582	$ 34,598
Restricted cash	71,648	54,106
Total cash, cash equivalents, and restricted cash shown on consolidated statement of cash flows	$ 134,230	$ 88,704	$ 87,200	$ 98,889