Organization and Summary of Significant Accounting Policies (Changes in AOCI) (Details) $ in Thousands	6 Months Ended
Jun. 30, 2018 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	$ 3,840,910
Other comprehensive income	1,147
Reclassifications from accumulated other comprehensive income to net earnings	1,056
Net current period other comprehensive income	2,203
Ending balance, June 30, 2018	3,989,111
Gains or (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	(14,655)
Other comprehensive income	1,095
Reclassifications from accumulated other comprehensive income to net earnings	1,056
Net current period other comprehensive income	2,151
Ending balance, June 30, 2018	(12,504)
Gains on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	917
Other comprehensive income	52
Reclassifications from accumulated other comprehensive income to net earnings	0
Net current period other comprehensive income	52
Ending balance, June 30, 2018	969
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2017	(13,738)
Ending balance, June 30, 2018	$ (11,535)

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

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