Earnings Per Share (Schedule of Dilutive Impact of Equity Method Investee Stock Options) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net income per share:
Net income - basic	$ 93,093	$ 89,755
Less: Adjustment for dilutive effect of Telesat stock options	(522)	(528)
Net income - diluted	$ 92,571	$ 89,227