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Other Income (Expense), Net Other Income (Expense), Net (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Other Nonoperating Income (Expense), Net - Total $ (37,934,000) $ 4,272,000 $ (63,898,000) $ 28,508,000
Gain (Loss) on Disposition of Assets     0 (6,328,000)
Other Nonrecurring Expense (1,130,000) 0 (1,130,000) 0
Other Nonoperating Income (Expense), Net - Other (110,000) (28,000) (174,000) 26,000
Other Nonoperating Expense (494,000) 0 (1,594,000) 0
kaleo [Member]        
Other Interest and Dividend Income   17,600,000   (17,600,000)
Unrealized Gain (Loss) on Investments - kaleo $ (36,200,000) $ 4,300,000 $ (61,000,000) $ 28,482,000