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Other Income (Expense), Net Other Income (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Nonoperating Income (Expense), Net - Total	$ (2,557)	$ 34	$ 11,532	$ 38,055
Other Nonoperating Income (Expense), Net - Other	(457)	34	(368)	1,399
kaleo [Member]
Unrealized Gain (Loss) on Investments - kaleo	$ (2,100)	$ 0	$ 11,900	$ 24,800