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Other Income (Expense), Net Other Income (Expense), Net (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Other Nonoperating Income (Expense), Net - Total $ 17,110 $ 8,233
Other Nonoperating Income (Expense), Net - Other 28 33
kaleo [Member]    
Other Interest and Dividend Income 17,582  
Unrealized Gain (Loss) on Investments - kaleo $ 17,082 $ 8,200