UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows From Operating Activities
Net income (loss)	$ 12,653	$ 2,261
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	71,637	76,695
Amortization reflected as operating expense	12,967	12,950
Amortization reflected as rent expense in cost of services	175	593
Bad debt expense	758	886
Stock based compensation expense, net of amount capitalized	3,407	2,418
Waived management fee	18,606	18,107
Deferred income taxes	(9,325)	(11,954)
(Gain) loss on investments	(24)	(187)
Net (gain) loss from patronage and equity investments	(1,552)	(1,447)
Amortization of long-term debt issuance costs	2,365	2,385
Accrued interest and other	101	854
Changes in assets and liabilities:
Accounts receivable	(11,060)	5,196
Inventory, net	(503)	25,049
Income taxes receivable	16,722	(1,908)
Other assets	3,909	(126)
Accounts payable	2,486	(40,558)
Income taxes payable	0	(435)
Deferred lease	1,353	2,493
Other deferrals and accruals	2,469	(6,478)
Net cash provided by (used in) operating activities	127,144	86,794
Cash Flows From Investing Activities:
Acquisition of property, plant and equipment	(62,322)	(68,766)
Proceeds from sale of assets	447	269
Cash distributions (contributions) from investments and other	(3)	7
Sprint expansion	(52,000)	(6,000)
Net cash provided by (used in) investing activities	(113,878)	(74,490)
Cash Flows From Financing Activities
Principal payments on long-term debt	(24,250)	(12,125)
Proceeds from revolving credit facility borrowings	15,000	0
Proceeds from credit facility borrowings	0	25,000
Principal payments on revolving credit facility	(15,000)	0
Taxes paid for equity award issuances	(2,032)	(1,598)
Net cash provided by (used in) financing activities	(26,282)	11,277
Net increase (decrease) in cash and cash equivalents	(13,016)	23,581
Cash and cash equivalents, beginning of period	78,585	36,193
Cash and cash equivalents, end of period	65,569	59,774
Cash payments for:
Interest, net of capitalized interest of $737 and $1,035, respectively	16,902	17,085
Income tax refunds received, net of taxes paid	(3,359)	15,150
Capital expenditures payable	$ 6,324	$ 4,567