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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash flows from operating activities: |  |  |
Net income | $ 34,872 | $ 48,894 | $ 24,214
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation and amortization | 85,719 | 86,934 | 75,980
Provision for doubtful accounts | 5,134 | 3,993 | 2,454
Amortization and write off of debt discount and debt issuance costs | 763 | 670 | 505
Stock-based compensation | 6,420 | 6,977 | 6,410
Unrealized loss on foreign currency | 1,342 | (1,209) |
Deferred income taxes | (23,242) | (13,505) | (5,636)
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 | (26,425) | 101 | 27
Gain on sale of investments |  | (826) |
Impairment of long-lived assets | 0 | 0 | 11,425
Pension funding required by Viya acquisition |  |  | (22,494)
Loss on deconsolidation of subsidiary |  | 529 |
Other non-cash activity | 308 | 424 | 566
Changes in operating assets and liabilities, excluding the effects of acquisitions and dispositions: |  |  |
Accounts receivable | (1,682) | (4,074) | 2,601
Materials and supplies, prepayments, and other current assets | 5,924 | 1,002 | (8,410)
Prepaid income taxes | 3,147 | 996 |
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities | (7,044) | 4,649 | 6,522
Accrued taxes | 29,089 | (1,385) | 21,547
Other assets | (238) | 4,102 | (12,122)
Other liabilities | 1,778 | 4,583 | 15,371
Net cash provided by operating activities | 115,865 | 145,725 | 111,656
Cash flows from investing activities: |  |  |
Capital expenditures | (105,769) | (133,786) | (124,282)
Hurricane rebuild capital expenditures | (80,152) | (8,585) |
Hurricane insurance proceeds | 34,606 |  |
Receipt of government grants | 5,400 |  |
Purchase of strategic investments | (3,000) | (18,107) | (2,000)
Divestiture of businesses, net of transferred cash of $11.5 million and $2.1 million, respectively | 48,270 | 22,381 |
Acquisition of businesses, net of acquired cash of $0.0 million and $12.6 million, respectively |  | (1,183) | (146,395)
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 | (138) |  | (7,422)
Proceeds from sale of investments | 6,564 | 3,794 |
Proceeds from disposition of long-lived assets | 6,900 |  | 1,424
Net cash used in investing activities | (87,319) | (172,318) | (296,580)
Cash flows from financing activities: |  |  |
Dividends paid on common stock | (10,866) | (19,227) | (20,965)
Proceeds from new borrowings |  | 8,571 | 125,800
Distribution to non-controlling interests | (18,780) | (6,858) | (8,632)
Payment of debt issuance costs |  | (326) | (2,763)
Proceeds from stock option exercises | 72 | 1,030 | 649
Principal repayments of term loan | (9,795) | (9,355) | (33,564)
Repurchase of common stock | (6,198) | (12,855) | (4,114)
Acquisition of businesses, net of acquired cash of $0.0 million |  | (1,178) |
Repurchases of non-controlling interests | (9,663) | (2,025) | (3,485)
Investments made by minority shareholders in consolidated affiliates |  | 122 | 22,408
Net cash used in provided by financing activities | (55,230) | (42,101) | 75,334
Effect of foreign currency exchange rates on cash and cash equivalents | (299) | 226 | (626)
Net change in cash, cash equivalents, and restricted cash | (26,983) | (68,468) | (110,216)
Total cash, cash equivalents, and restricted cash, beginning of period | 219,890 | 288,358 | 398,574
Total cash, cash equivalents, and restricted cash, end of period | 192,907 | 219,890 | 288,358
Supplemental cash flow information: |  |  |
Interest paid | 7,235 | 7,411 | 4,451
Taxes paid | 12,486 | 13,685 | 8,237
Dividends declared, not paid | 2,720 | 2,724 | 5,487
Noncash investing activity: |  |  |
Transfer from inventory, materials and supplies to property, plant and equipment | 6,708 |  |
Purchases of property, plant and equipment included in accounts payable and accrued expenses | $ 12,877 | $ 19,466 | $ 16,847

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration