Other Income (Expense), Net Other Income (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other Nonoperating Income (Expense), Net - Total	$ 5,857	$ 34,735	$ 14,089	$ 38,022
Other Nonoperating Income (Expense), Net - Other	57	1,379	89	1,366
kaleo [Member]
Unrealized Gain (Loss) on Investments - kaleo	$ 5,800	$ 21,500	$ 14,000	$ 24,800