Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities:
Net income	$ 336	$ 11,357
Adjustments to reconcile net income to net cash provided (used) by operating activities:
Depreciation and amortization	17,160	17,016
Gain on wireless sale		(41,140)
Loss on disposal of assets, net	152	1,754
Unrealized gain on ineffective hedge		(542)
Amortization of debt issuance costs and debt discount	2,021	2,043
Amortization of ineffective hedge		1,970
Loss on extinguishment of debt	336	2,628
Amortization of deferred capacity revenue	(1,702)	(1,469)
Stock-based compensation	1,447	1,279
Deferred income tax expense (benefit)	495	(3,394)
Charge for uncollectible accounts	77	1,319
Cash distribution from equity method investments		3,056
Earnings from equity method investments		(3,056)
Other non-cash expense, net	414	543
Income taxes (receivable) payable	(722)	8,038
Changes in operating assets and liabilities	(1,077)	(9,648)
Net cash provided (used) by operating activities	18,937	(8,246)
Cash Flows from Investing Activities:
Capital expenditures	(13,662)	(26,133)
Capitalized interest	(548)	(788)
Change in unsettled capital expenditures	(9,156)	674
Proceeds on wireless sale		278,068
Proceeds on sale of assets	2,663	3,126
Return of capital from equity investment		1,875
Net change in restricted cash	13
Net cash (used) provided by investing activities	(20,690)	256,822
Cash Flows from Financing Activities:
Repayments of long-term debt	(11,486)	(242,837)
Debt issuance costs	(44)	(1,042)
Cash paid for debt extinguishment	(150)
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	128	135
Net cash used by financing activities	(12,000)	(243,454)
Change in cash and cash equivalents	(13,753)	5,122
Cash and cash equivalents, beginning of period	36,001	31,709
Cash and cash equivalents, end of period	22,248	36,831
Supplemental Cash Flow Data:
Interest paid	6,359	8,941
Income taxes paid, net	$ 577	$ 3,942