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, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Income from continuing operations — basic	$ 38,227	$ 484	$ 76,743	$ 4,778
Less: Adjustment for dilutive effect of Telesat stock options	(230)		(484)	(10)
Income from continuing operations — diluted	$ 37,997		$ 76,259	$ 4,768

Amount after tax of income (loss) from continuing operations attributable to the parent.

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