Earnings Per Share (Schedule of Dilutive Impact of Equity Method Investee Stock Options) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net (loss) income per share:
Net income (loss)	$ 73,566	$ 38,227	$ (47,777)	$ 76,743
Less: Adjustment for dilutive effect of Telesat stock options	(398)	(230)		(484)
Income from continuing operations - diluted	$ 73,168	$ 37,997		$ 76,259