Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net Income	$ 134,287	$ 112,832
Adjustments to reconcile net income to net cash flow from operating activities:
Depreciation and amortization	30,305	31,656
Stock-based compensation	10,495	8,761
Company stock 401(k) contribution	5,338	5,304
Gains on assets, net	(18,308)	0
Equity loss from unconsolidated investments, net	3,811	1,329
Pension contributions including income, net of expense	(585)	(4,410)
Change in other assets and liabilities, net of acquisitions:
Increase in trade receivables	(120)	(63,120)
Increase (decrease) in accounts payable	13,987	(15,077)
Increase in interest and taxes payable, net	13,663	4,320
Increase in deferred revenue	2,298	923
Change in other assets and liabilities, net	1,089	(24,447)
Net cash flow from operating activities	196,260	58,071
Cash flows from investing activities:
Purchase of property and equipment	(5,538)	(13,185)
Reimbursements from spectrum repacking	58	1,423
Payments for acquisitions of businesses	0	(13,341)
Purchases of investments	(2,216)	(157)
Proceeds from investments	0	2,022
Proceeds from sale of assets	366	7
Net cash flow used for investing activities	(7,330)	(23,231)
Cash flows from financing activities:
Payments under revolving credit facilities, net	(166,000)	(37,000)
Dividends paid	(21,151)	(15,439)
Other, net	(15,452)	(10,516)
Net cash flow used for financing activities	(202,603)	(62,955)
Decrease in cash	(13,673)	(28,115)
Balance of cash, beginning of period	56,989	40,968
Balance of cash, end of period	43,316	12,853
Supplemental cash flow information:
Cash refunds from income taxes, net of payments	(248)	(33)
Cash paid for interest	$ 75,063	$ 76,045