CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 126,723	$ 55,956	$ 46,595
Income from discontinued operations, net of tax	124,097	53,568	44,518
Income from continuing operations	2,626	2,388	2,077
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	47,964	46,313	44,213
Amortization	739	473	176
Accretion of asset retirement obligations	333	410	319
Bad debt expense	1,220	1,743	1,983
Stock based compensation expense, net of amount capitalized	5,907	3,367	4,745
Deferred income taxes	15,310	16,848	3,857
Gain from patronage and investments	(1,311)	(4,769)	(3,112)
Changes in assets and liabilities:
Accounts receivable	(7,318)	(74)	8
Current income taxes	(15,896)	(16,675)	(5,200)
Operating lease right-of-use assets	3,980	7,593	0
Other assets	(3,959)	162	(6,576)
Accounts payable	(663)	(8,426)	12,203
Lease liabilities	(3,067)	(4,987)	0
Other deferrals and accruals	7,494	(2,037)	(494)
Net cash provided by operating activities - continuing operations	53,359	42,329	54,199
Net cash provided by operating activities - discontinued operations	249,508	216,816	211,448
Net cash provided by operating activities	302,867	259,145	265,647
Cash flows from investing activities:
Capital expenditures	(120,450)	(67,048)	(56,631)
Cash disbursed for acquisitions	(1,890)	(10,000)	0
Cash disbursed for deposit on FCC spectrum leases	(16,118)	(16,742)	0
Proceeds from sale of assets and other	370	112	541
Net cash used in investing activities - continuing operations	(138,088)	(93,678)	(56,090)
Net cash used in investing activities - discontinued operations	(17,500)	(71,656)	(131,710)
Net cash used in investing activities	(155,588)	(165,334)	(187,800)
Cash flows from financing activities:
Dividends paid, net of dividends reinvested	(16,424)	(13,943)	(12,863)
Share repurchases	0	(7,231)	0
Taxes paid for equity award issuances	(2,217)	(2,910)	(3,245)
Payments for financing arrangements and other	(769)	36	(2)
Net cash used in financing activities - continuing operations	(19,410)	(24,048)	(16,110)
Net cash used in financing activities - discontinued operations	(34,123)	(53,198)	(55,236)
Net cash used in financing activities	(53,533)	(77,246)	(71,346)
Net increase in cash and cash equivalents	93,746	16,565	6,501
Cash and cash equivalents, beginning of period	101,651	85,086	78,585
Cash and cash equivalents, end of period	$ 195,397	$ 101,651	$ 85,086