CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities:
Net income	$ 37,352	$ 48,443
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	126,742	126,734
Equity in losses (earnings) of unconsolidated affiliates, net	(5,249)	963
Gain and impairment on investments, net	(8,737)	(2,462)
Stock-based compensation	956	4,384
Deferred tax provision	343	25,684
Dividends received from unconsolidated entity	7,500	0
Changes in current assets and current liabilities, net	(13,857)	(18,184)
Changes in noncurrent assets and noncurrent liabilities, net	(6,003)	3,388
Other, net	2,308	3,899
Net cash flows from operating activities	141,355	192,849
Cash Flows from Investing Activities:
Purchases of marketable investment securities	(45,905)	(321,892)
Sales and maturities of marketable investment securities	205,296	323,889
Expenditures for property and equipment	(102,463)	(235,223)
Refunds and other receipts related to capital expenditures	0	24,087
Changes in restricted cash and marketable investment securities	4,583	(662)
Sale of investment in unconsolidated entity	17,781	0
Expenditures for externally marketed software	(10,832)	(5,959)
Other, net	0	1,460
Net cash flows from investing activities	68,460	(214,300)
Cash Flows from Financing Activities:
Repayment of debt and capital lease obligations	(8,736)	(10,542)
Net proceeds from Class A common stock options exercised	26,325	2,315
Net proceeds from Class A common stock issued under the Employee Stock Purchase Plan	2,409	4,020
Cash exchanged for Tracking Stock	(651)	0
Other, net	(1,475)	(302)
Net cash flows from financing activities	17,872	(4,509)
Effect of exchange rates on cash and cash equivalents	715	536
Net increase (decrease) in cash and cash equivalents	228,402	(25,424)
Cash and cash equivalents, beginning of period	2,571,143	924,240
Cash and cash equivalents, end of period	2,799,545	898,816
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest (including capitalized interest)	54,053	10,476
Capitalized interest	21,824	22,021
Cash paid for income taxes	1,035	2,586
Employee benefits paid in Class A common stock	11,199	11,126
Property and equipment financed under capital lease obligations	7,485	2,351
Increase (decrease) in capital expenditures included in accounts payable, net	(6,315)	3,670
Capitalized in-orbit incentive obligations	31,000	0
Noncash net assets exchanged for Tracking Stock	$ 299,425	$ 0