Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities (Tables)

12 Months Ended

Dec. 31, 2017

Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities

Schedule of marketable investment securities, restricted cash and cash equivalents, and other investment securities

	As of December 31,
	2017		2016
	(In thousands)
Marketable investment securities:
Current marketable investment securities:
Trading	$	93,367	$	—
Other		92,146		3,833
Total current marketable investment securities		185,513		3,833
Restricted marketable investment securities (1)		72,014		81,679
Total marketable investment securities		257,527		85,512
Restricted cash and cash equivalents (1)		393		681
Other investment securities:
Other investment securities - equity method		113,460		25,098
Other investment securities - cost method		—		8,150
Total other investment securities		113,460		33,248
Total marketable investment securities, restricted cash and cash equivalents, and other investment securities	$	371,380	$	119,441

(1) Restricted marketable investment securities and restricted cash and cash equivalents are included in “Restricted cash, cash equivalents and marketable investment securities” on our Consolidated Balance Sheets.

Schedule of components of available-for-sale investments

	As of December 31,
	2017								2016
	Marketable								Marketable
	Investment		Unrealized						Investment		Unrealized
	Securities		Gains		Losses		Net		Securities		Gains		Losses		Net
	(In thousands)
Debt securities (including restricted):
U.S. Treasury and agency securities	$	74,788	$	22	$	(141)	$	(119)	$	81,982	$	13	$	(132)	$	(119)
Commercial paper		24,407		—		(2)		(2)		—		—		—		—
Corporate securities		63,809		—		(29)		(29)		3,530		3		—		3
Other		1,156		—		—		—		—		—		—		—
Total	$	164,160	$	22	$	(172)	$	(150)	$	85,512	$	16	$	(132)	$	(116)

Schedule of available-for-sale securities in continuous unrealized loss position by length of time and their fair value

	As of December 31,
	2017				2016
	Fair		Unrealized		Fair		Unrealized
	Value		Loss		Value		Loss
	(In thousands)
Debt Securities:
Less than 12 months	$	109,853	$	(53)	$	51,796	$	(131)
12 months or more		34,203		(119)		1,410		(1)
Total	$	144,056	$	(172)	$	53,206	$	(132)

Schedule of investments measured at fair value on a recurring basis

	As of December 31,
	2017								2016
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
	(In thousands)
Cash equivalents (including restricted)	$	315,030	$	140	$	314,890	$	—	$	702,331	$	4,126	$	698,205	$	—
Debt securities (including restricted):
U.S. Treasury and agency securities	$	74,788	$	74,788	$	—	$	—	$	81,982	$	81,982	$	—	$	—
Commercial paper		24,407		—		24,407		—		—		—		—		—
Corporate securities		63,809		—		63,809		—		3,530		—		3,530		—
Other		1,156		—		1,156		—		—		—		—		—
Equity Securities		93,367		93,367		—		—		—		—		—		—
Total	$	257,527	$	168,155	$	89,372	$	—	$	85,512	$	81,982	$	3,530	$	—

Gains and Losses on Sales and Changes in Carrying Amounts of Investments

	For the Years Ended December 31,
Other, net:	2017		2016		2015
	(In thousands)
Marketable investment securities - gains (losses) on sales/exchanges	$	1,803	$	32,509	$	14,449
Marketable investment securities - unrealized gains (losses) on trading securities		85,217		—		—
Costs related to early redemption of debt		(1,470)		—		—
Equity in earnings		2,163		2,508		4,372
Other		798		(2,212)		(1,005)
Total	$	88,511	$	32,805	$	17,816