CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities:
Net income	$ 44,474	$ 104,352
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	256,776	247,239
Equity in earnings of unconsolidated affiliates, net	(10,080)	(6,017)
Gain and impairment on investments, net	(10,574)	(7,949)
Stock-based compensation	3,908	8,328
Deferred tax provision	673	53,091
Dividends received from unconsolidated entity	7,500	10,000
Proceeds from sale of trading securities	8,922	7,140
Changes in current assets and current liabilities, net	87,305	(73,916)
Changes in noncurrent assets and noncurrent liabilities, net	(11,763)	2,859
Other, net	5,738	10,507
Net cash flows from operating activities	382,879	355,634
Cash Flows from Investing Activities:
Purchases of marketable investment securities	(46,533)	(641,358)
Sales and maturities of marketable investment securities	291,944	500,775
Expenditures for property and equipment	(230,530)	(376,856)
Refunds and other receipts related to capital expenditures	0	24,087
Changes in restricted cash and marketable investment securities	(921)	(1,689)
Investments in unconsolidated entities	0	(1,636)
Sale of investment in unconsolidated entity	17,781	0
Expenditures for externally marketed software	(17,119)	(12,299)
Other, net	0	1,462
Net cash flows from investing activities	14,622	(507,514)
Cash Flows from Financing Activities:
Repayment of debt and capital lease obligations	(17,718)	(20,433)
Net proceeds from Class A common stock options exercised	31,992	2,975
Net proceeds from Class A common stock issued under the Employee Stock Purchase Plan	4,540	7,530
Cash exchanged for Tracking Stock	(651)	0
Other, net	(2,712)	(1,320)
Net cash flows from financing activities	15,451	(11,248)
Effect of exchange rates on cash and cash equivalents	967	728
Net increase (decrease) in cash and cash equivalents	413,919	(162,400)
Cash and cash equivalents, beginning of period	2,571,143	924,240
Cash and cash equivalents, end of period	2,985,062	761,840
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest (including capitalized interest)	130,231	87,213
Capitalized interest	33,768	47,093
Cash paid for income taxes	9,369	6,199
Employee benefits paid in Class A common stock	11,200	11,126
Property and equipment financed under capital lease obligations	8,189	6,857
Increase (decrease) in capital expenditures included in accounts payable, net	(3,404)	8,238
Capitalized in-orbit incentive obligations	43,890	0
Noncash net assets exchanged for Tracking Stock	$ 299,425	$ 0