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CONSOLIDATED STATEMENTS OF CASH FLOWS
$ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Cash flows from operating activities:      
Net income $ 48,894 $ 24,214 $ 33,156
Adjustments to reconcile net income to net cash flows provided by operating activities:      
Depreciation and amortization 86,934 75,980 56,890
Provision for doubtful accounts 3,993 2,454 1,199
Amortization and write off of debt discount and debt issuance costs 670 505 458
Stock-based compensation 6,977 6,410 4,975
Deferred income taxes (13,505) (5,636) 17,869
Loss on equity method investments 2,033    
Bargain purchase gain   (7,304)  
Loss on damaged assets from Hurricanes 35,443    
Insurance recovery related to hurricane claims (34,606)    
(Gain) Loss on disposition of long-lived assets 101 27 (2,823)
Gain on sale of investments (826)   (1,092)
Impairment charges   11,425  
Pension funding required by Viya acquisition   (22,494)  
Loss on deconsolidation of subsidiary 529   19,937
Other non-cash activity (785) 566  
Changes in operating assets and liabilities, excluding the effects of acquisitions and dispositions:      
Accounts receivable (4,074) 2,601 11,744
Materials and supplies, prepayments, and other current assets 1,002 (8,410) (1,094)
Prepaid income taxes 996    
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities 4,649 6,522 (2,385)
Accrued taxes (1,385) 21,547 9,740
Other assets 4,102 (12,122) (134)
Other liabilities 4,583 15,371 (9,360)
Net cash provided by operating activities of continuing operations 145,725 111,656 139,080
Net cash provided by operating activities of discontinued operations     158
Net cash provided by operating activities 145,725 111,656 139,238
Cash flows from investing activities:      
Capital expenditures (142,371) (124,282) (64,753)
Strategic investments (18,107) (2,000)  
Divestiture of businesses, net of transferred cash of $2.1 million 22,381    
Acquisition of businesses, net of acquired cash of $0.0 million, $12.6 million, and $0.0 million (2,363) (146,395) (11,968)
Purchases of spectrum licenses and other intangible assets, including deposits (36,832) (10,860)  
Acquisition of non-controlling interest in subsidiary   (7,045)  
Purchase of short-term investments   (7,422)  
Proceeds from sale of investments 3,797    
Change in restricted cash 6,702 (12,108) 38,877
Proceeds from disposition of long-lived assets   1,424 5,873
Net cash used in investing activities (166,793) (308,688) (31,971)
Cash flows from financing activities:      
Dividends paid on common stock (19,227) (20,965) (19,070)
Proceeds from the issuance of debt 8,571 125,800  
Distribution to non-controlling interests (6,858) (8,632) (16,514)
Payment of debt issuance costs (326) (2,763) (892)
Proceeds from stock option exercises 1,030 649 1,998
Principal repayments of term loan (9,355) (33,564) (6,017)
Purchase of common stock (12,855) (4,114) (1,893)
Repurchases of non-controlling interests (2,025) (3,485)  
Investments made by minority shareholders in consolidated affiliates 122 22,408 950
Net cash provided by (used in) financing activities of continuing operations (40,923) 75,334 (41,438)
Net cash (used in) provided by financing activities (40,923) 75,334 (41,438)
Effect of foreign currency exchange rates on cash and cash equivalents 226 (626)  
Net change in cash and cash equivalents (61,765) (122,324) 65,829
Cash and cash equivalents, beginning of period 269,721 392,045 326,216
Cash and cash equivalents, end of period 207,956 269,721 392,045
Supplemental cash flow information:      
Interest paid 7,411 4,451 2,724
Taxes paid 13,685 8,237 9,636
Dividends declared, not paid 2,724 5,487 5,141
Noncash investing activity:      
Purchases of property, plant and equipment included in accounts payable and accrued expenses $ 19,466 $ 16,847 $ 7,705