CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income (loss)	$ 8,911	$ 14,526
Adjustments to reconcile net income (loss) to net cash flows provided by operating activities:
Depreciation and amortization	31,047	29,223
Provision for doubtful accounts	100	237
Amortization of debt discount and debt issuance costs	236	283
Stock-based compensation	3,633	2,677
Deferred income taxes	(8,775)
Income from discontinued operations, net of tax		(390)
Business Combination, Bargain Purchase, Gain Recognized, Amount	(7,304)
Gain on disposition of long-lived assets	(29)	(2,823)
Impairment of long-lived assets	11,076
Loss on deconsolidation of subsidiary		19,937
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable, net	(2,902)	4,033
Materials and supplies, prepayments, and other current assets	(4,505)	(4,275)
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities	(4,713)	4,440
Accrued taxes	15,294	18,553
Other assets	(1,854)	(32)
Other liabilities	10,505	(5,847)
Net cash provided by (used in) operating activities of continuing operations	50,720	80,542
Net cash provided by (used in) operating activities of discontinued operations		603
Net cash provided by (used in) operating activities	50,720	81,145
Cash flows from investing activities:
Capital expenditures	(42,727)	(28,031)
Purchase of marketable securities	(2,000)
Acquisition of businesses, net of acquired cash of $8.3 million and $6.6 million	(29,719)	(11,968)
Purchases of spectrum licenses and other intangible assets, including deposits	(10,860)
Acquisition of non-controlling interest in subsidiary	(7,045)
Change in restricted cash	(290)	39,001
Proceeds from disposition of long-lived assets	1,424	5,873
Net cash used in investing activities of continuing operations	(91,217)	4,875
Cash flows from financing activities:
Dividends paid on common stock	(10,311)	(9,267)
Distribution to non-controlling stockholders	(4,302)	(9,160)
Payment of debt issuance costs		(30)
Proceeds from stock option exercises	164	1,686
Principal repayments of term loan	(4,759)	(2,997)
Purchase of common stock	(1,986)	(1,568)
Investments made by minority shareholders in consolidated affiliates	21,904	905
Net cash provided by financing activities of continuing operations	710	(20,431)
Net change in cash and cash equivalents	(39,787)	65,589
Cash and cash equivalents, beginning of period	392,045	326,216
Cash and cash equivalents, end of period	$ 352,258	$ 391,805