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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Operating activities: |  |  |
Net loss |  | $ (80,645) | $ (81,394)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization |  | 57,629 | 33,949
Amortization of deferred drydocking and survey costs |  | 16,076 | 4,243
Amortization of debt premium and discounts |  | (1,562) | (1,371)
Provision for deferred income taxes |  | 759 |
Loss (gain) on asset dispositions, net |  | (1,047) | (1,686)
Asset impairments | [1] | 5,224 | 24,254
Changes in investments in, at equity, and advances to unconsolidated companies |  | 435 | 28,087
Compensation expense - stock-based |  | 16,599 | 9,967
Changes in assets and liabilities, net: |  |  |
Trade and other receivables |  | (11,796) | (10,744)
Changes in due to/from affiliate, net |  | 14,898 | 28,290
Accounts payable |  | (8,267) | 1,719
Accrued costs and expenses |  | (10,574) | (10,857)
Cash paid for deferred drydocking and survey costs |  | (43,701) | (17,088)
Other, net |  | 9,268 | 14,861
Net cash provided by (used in) operating activities |  | (36,704) | 22,230
Cash flows from investing activities: |  |  |
Proceeds from sales of assets |  | 25,092 | 16,499
Additions to properties and equipment |  | (13,931) | (9,116)
Net cash provided by investing activities |  | 11,161 | 7,383
Cash flows from financing activities: |  |  |
Principal payments on long-term debt |  | (6,458) | (4,020)
Payments to General Unsecured Creditors |  |  | (8,377)
Taxes on share based awards |  | (3,112) |
Other |  | 1 | (1,997)
Net cash used in financing activities |  | (9,569) | (14,394)
Net change in cash, cash equivalents and restricted cash |  | (35,112) | 15,219
Cash, cash equivalents and restricted cash at beginning of period |  | 397,744 | 453,335
Cash, cash equivalents and restricted cash at end of period |  | 362,632 | 468,554
Cash paid during the period for: |  |  |
Interest, net of amounts capitalized |  | 24,482 | 24,218
Income taxes |  | $ 10,386 | $ 13,679
[1] | Refer to Note (14) for additional information regarding asset impairment charges.

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