Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities:
Net income	$ 656	$ 12,559
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,908	25,491
Gain on wireless sale		(48,232)
Loss on disposal of assets, net	284	1,868
Unrealized gain on ineffective hedge		(820)
Amortization of debt issuance costs and debt discount	3,035	3,062
Amortization of ineffective hedge		1,970
Loss on extinguishment of debt	336	4,878
Amortization of deferred capacity revenue	(2,564)	(2,162)
Stock-based compensation	2,147	1,898
Deferred income tax expense	543	3,571
Charge for uncollectible accounts	166	1,385
Cash distribution from equity method investments		3,056
Earnings from equity method investments		(3,056)
Other non-cash expense, net	466	817
Income taxes (receivable) payable	(852)	1,736
Changes in operating assets and liabilities	(1,710)	(2,521)
Net cash provided by operating activities	28,415	5,500
Cash Flows from Investing Activities:
Capital expenditures	(22,351)	(38,216)
Capitalized interest	(811)	(1,232)
Change in unsettled capital expenditures	(9,181)	3,387
Proceeds on wireless sale		285,160
Proceeds on sale of assets	2,664	3,129
Return of capital from equity investment		1,875
Net change in restricted cash	13	(1,357)
Net cash (used) provided by investing activities	(29,666)	252,746
Cash Flows from Financing Activities:
Repayments of long-term debt	(12,355)	(333,390)
Proceeds from the issuance of long-term debt		90,061
Debt issuance costs	(44)	(4,555)
Cash paid for debt extinguishment	(150)	(391)
Cash paid in acquisition of business		(291)
Cash proceeds from noncontrolling interest	75	250
Payment of withholding taxes on stock-based compensation	(472)	(402)
Excess tax (expense) benefit from share-based payments	(51)	733
Proceeds from the issuance of common stock	130	134
Net cash used by financing activities	(12,867)	(247,851)
Change in cash and cash equivalents	(14,118)	10,395
Cash and cash equivalents, beginning of period	36,001	31,709
Cash and cash equivalents, end of period	21,883	42,104
Supplemental Cash Flow Data:
Interest paid	8,012	11,120
Income taxes paid, net	$ 577	$ 3,942