CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Adoption of ASC 326 Increase (Decrease)	Balance at January 1, 2020	Class A and B Common Stock	Class A and B Common Stock Balance at January 1, 2020	Additional Paid-In Capital	Additional Paid-In Capital Balance at January 1, 2020	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Balance at January 1, 2020	Accumulated Earnings (Losses)	Accumulated Earnings (Losses) Adoption of ASC 326 Increase (Decrease)	Accumulated Earnings (Losses) Balance at January 1, 2020	Treasury Stock, at cost	Treasury Stock, at cost Balance at January 1, 2020	Non-controlling Interests	Non-controlling Interests Adoption of ASC 326 Increase (Decrease)	Non-controlling Interests Balance at January 1, 2020
Beginning balance at Dec. 31, 2018	$ 4,155,474			$ 102		$ 3,702,522		$ (125,100)		$ 694,129			$ (131,454)		$ 15,275
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	61,503			2		61,501
Employee benefits	6,654					6,654
Employee Stock Purchase Plan	5,074					5,074
Stock-based compensation	4,833					4,833
Purchase of non-controlling interest	(7,313)					(2,666)									(4,647)
Other comprehensive income (loss)	5,600							5,600
Net income (loss)	9,948									8,510					1,438
Other, net	1,178					(419)				1,597
Ending balance at Jun. 30, 2019	4,242,951			104		3,777,499		(119,500)		704,236			(131,454)		12,066
Beginning balance at Mar. 31, 2019	4,179,536			102		3,713,777		(124,251)		709,928			(131,454)		11,434
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	59,457			2		59,455
Employee Stock Purchase Plan	2,325					2,325
Stock-based compensation	2,205					2,205
Other comprehensive income (loss)	4,751							4,751
Net income (loss)	(5,060)									(5,692)					632
Other, net	(263)					(263)				0
Ending balance at Jun. 30, 2019	4,242,951			104		3,777,499		(119,500)		704,236			(131,454)		12,066
Beginning balance at Dec. 31, 2019	3,745,553	$ (9,308)	$ 3,736,245	105	$ 105	3,290,483	$ 3,290,483	(122,138)	$ (122,138)	632,809	$ (9,068)	$ 623,741	(131,454)	$ (131,454)	75,748	$ (240)	$ 75,508
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	506					506
Employee benefits	6,920					6,920
Employee Stock Purchase Plan	5,300					5,300
Stock-based compensation	4,509					4,509
Issuance of equity and contribution of assets pursuant to the Yahsat JV formation	2,824					4,338									(1,514)
Contribution by non-controlling interest holder	10,000														10,000
Other comprehensive income (loss)	(103,368)							(84,672)							(18,696)
Net income (loss)	(72,580)									(65,707)					(6,873)
Treasury share repurchase	(5,893)												(5,893)
Other, net	(195)					(195)
Ending balance at Jun. 30, 2020	3,584,268			105		3,311,861		(206,810)		558,034			(137,347)		58,425
Beginning balance at Mar. 31, 2020	3,605,575			105		3,307,360		(192,218)		569,446			(137,347)		58,229
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	328					328
Employee Stock Purchase Plan	2,376					2,376
Stock-based compensation	2,125					2,125
Contribution by non-controlling interest holder	6,000														6,000
Other comprehensive income (loss)	(16,965)							(14,592)							(2,373)
Net income (loss)	(14,843)									(11,412)					(3,431)
Other, net	(328)					(328)				0					0
Ending balance at Jun. 30, 2020	$ 3,584,268			$ 105		$ 3,311,861		$ (206,810)		$ 558,034			$ (137,347)		$ 58,425