Organization and Summary of Significant Accounting Policies (Changes in AOCI) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	$ 4,154,605
Other comprehensive income	116
Reclassifications from accumulated other comprehensive income to net earnings	(1,008)
Net current period other comprehensive income (loss)	(892)
Balance	4,152,887
Gain or Loss on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(6,911)
Other comprehensive income	0
Reclassifications from accumulated other comprehensive income to net earnings	323
Net current period other comprehensive income (loss)	323
Balance	(6,588)
Gains and Losses on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	1,215
Other comprehensive income	116
Reclassifications from accumulated other comprehensive income to net earnings	(1,331)
Net current period other comprehensive income (loss)	(1,215)
Balance	0
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(5,696)
Balance	$ (6,588)