Organization and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Cash	$ 382,796	$ 295,602
Cash collateral posted to counterparties	16,639	14,758
Total cash including cash posted to counterparties shown on consolidated statement of cash flows	399,435	$ 310,360	$ 187,245	$ 136,230
Prior Period Reclassification Adjustment	$ 7,681
Share-based incentive plan, number of shares authorized for issuance	2,300,000