Organization and Summary of Significant Accounting Policies (Changes in AOCI) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	$ 3,840,910
Other comprehensive income	4,145
Reclassifications from accumulated other comprehensive income to net earnings	1,581
Net current period other comprehensive income	5,726
Ending balance, September 30, 2018	4,077,220
Gains or (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	(14,655)
Other comprehensive income	4,080
Reclassifications from accumulated other comprehensive income to net earnings	1,581
Net current period other comprehensive income	5,661
Ending balance, September 30, 2018	(8,994)
Gains on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	917
Other comprehensive income	65
Reclassifications from accumulated other comprehensive income to net earnings	0
Net current period other comprehensive income	65
Ending balance, September 30, 2018	982
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	(13,738)
Ending balance, September 30, 2018	$ (8,012)

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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