CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands, € in Millions	6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Cash flows from operating activities:
Net income	$ 16,358	$ 17,791
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	44,065	39,402
Amortization of debt discount and premium	894	930
Equity-based compensation expense (net of amounts capitalized)	14,181	11,157
Unrealized (gains) losses on foreign exchange - 2024 Notes	(13,590)	512
Realized foreign exchange gain on issuance on 2024 Euro Notes		(2,547)
Gains - equipment transactions and other, net	242	(935)
Deferred income taxes	3,558	4,253
Changes in operating assets and liabilities:
Accounts receivable	90	(93)
Prepaid expenses and other current assets	2,696	(2,465)
Accounts payable, accrued liabilities and other long-term liabilities	3,804	1,523
Deposits and other assets	(141)	(397)
Net cash provided by operating activities	86,855	69,769
Cash flows from investing activities:
Purchases of property and equipment	(32,661)	(26,796)
Net cash used in investing activities	(32,661)	(26,796)
Cash flows from financing activities:
Dividends paid	(73,082)	(62,295)
Principal payments on installment payment agreement	(4,347)	(5,128)
Principal payments of finance lease obligations	(11,936)	(9,883)
Proceeds from exercises of common stock options	875	989
Net cash used in financing activities	(50,874)	(25,257)
Effect of exchange rates changes on cash	(658)	(112)
Net increase in cash and cash equivalents	2,662	17,604
Cash and cash equivalents, beginning of period	371,301
Cash and cash equivalents, end of period	373,963	417,026
Supplemental disclosure of non-cash investing and financing activities:
Non-cash component of network equipment obtained in exchange transactions		241
PP&E obtained for installment payment agreement		5,472
Finance lease obligations incurred	16,218	42,359
2021 Notes
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on debt extinguishment and redemption - 2021 Notes		638
Cash flows from financing activities:
Redemption and extinguishment of Notes		(189,225)
2022 Notes
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on debt extinguishment and redemption - 2021 Notes	14,698
Cash flows from financing activities:
Redemption and extinguishment of Notes	(459,317)
Senior unsecured 2024 Notes
Cash flows from financing activities:
Net proceeds from issuance of senior unsecured Notes - net of debt costs of $2,137		$ 240,285
Senior secured 2026 Notes
Cash flows from financing activities:
Net proceeds from issuance of senior secured 2026 Notes - net of debt costs of $1,317	$ 496,933