CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ (21,171)	$ 37,352
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Depreciation and amortization	145,554	126,742
Amortization of debt issuance costs	1,936	1,790
Equity in (earnings) losses of unconsolidated affiliates, net	1,009	(5,249)
Loss (gain) and impairment on investments, net	36,673	(8,737)
Stock-based compensation	2,765	956
Deferred tax (benefit) provision	(7,036)	343
Dividend received from unconsolidated entity	0	7,500
Changes in current assets and current liabilities, net	(13,313)	(13,857)
Changes in noncurrent assets and noncurrent liabilities, net	(13,982)	(6,003)
Other, net	2,840	518
Net cash flows from operating activities	135,275	141,355
Cash flows from investing activities:
Purchases of marketable investment securities	(562,611)	(45,905)
Sales and maturities of marketable investment securities	298,596	209,923
Expenditures for property and equipment	(128,506)	(102,463)
Refunds and other receipts related to capital expenditures	77,524	0
Sale of investment in unconsolidated entity	0	17,781
Expenditures for externally marketed software	(7,148)	(10,832)
Net cash flows from investing activities	(322,145)	68,504
Cash flows from financing activities:
Repayment of debt and capital lease obligations	(9,368)	(8,736)
Net proceeds from Class A common stock options exercised	3,481	26,325
Net proceeds from Class A common stock issued under the Employee Stock Purchase Plan	2,636	2,409
Cash exchanged for Tracking Stock (Note 1)	0	(651)
Other, net	(1,508)	(1,475)
Net cash flows from financing activities	(4,759)	17,872
Effect of exchange rates on cash and cash equivalents	(242)	715
Net increase (decrease) in cash and cash equivalents, including restricted amounts	(191,871)	228,446
Cash and cash equivalents, including restricted amounts, beginning of period	2,432,249	2,571,866
Cash and cash equivalents, including restricted amounts, end of period	2,240,378	2,800,312
Supplemental disclosure of cash flow information:
Cash paid for interest (including capitalized interest)	55,172	54,053
Capitalized interest	4,099	21,824
Cash paid for income taxes	839	1,035
Employee benefits paid in Class A common stock	7,605	11,199
Property and equipment financed under capital lease obligations	38	7,485
Increase (decrease) in capital expenditures included in accounts payable, net	585	(6,315)
Capitalized in-orbit incentive obligations	0	31,000
Non-cash net assets exchanged for Tracking Stock (Note 1)	$ 0	$ 299,425