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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |  |
Net (loss) income | $ (97,412) | $ 89,575 | $ 69,421
Adjustments to reconcile net (loss) income to net cash provided by operating activities: |  |  |
Depreciation | 25,989 | 21,886 | 21,215
Amortization of intangibles | 21,981 | 20,471 | 19,468
Net (gain) loss on sale of assets and business divestiture | (1,567) | (109) | (10,148)
Loss on debt extinguishment | 396 | 165 | 280
Deferred income taxes | 5,016 | 3,420 | (2,976)
Stock-based compensation | 4,509 | 9,036 | 10,169
Non-cash interest expense | 1,112 | 1,045 | 1,745
Impairment and other, net | 107,114 | 0 | 24,968
Accounts receivable | 71,436 | 8,327 | (39,539)
Inventories | 21,099 | (2,510) | (18,713)
Prepaid expenses and other | (2,875) | (3,809) | 4,548
Accounts payable and accrued liabilities | (28,266) | (817) | 32,653
Other, net | (4,398) | (396) | (620)
Net cash provided by operating activities | 124,134 | 146,284 | 112,471
Cash flows from investing activities: |  |  |
Capital expenditures | (20,131) | (37,645) | (34,009)
Proceeds from sale of assets and business divestiture | 17,115 | 785 | 17,776
Other, net | 0 | 0 | 3,060
Net cash used in investing activities | (3,016) | (36,860) | (13,173)
Cash flows from financing activities: |  |  |
Proceeds from exercise of stock options | 1,273 | 848 | 961
Dividends paid | (17,324) | (17,797) | (17,768)
Borrowings under revolving credit facilities | 45,794 | 619 | 937
Payments under revolving credit facilities | (45,794) | (619) | (937)
Principal payments under finance lease obligations | (327) | (308) | (290)
Principal payments against senior notes | (10,000) | 0 | 0
Borrowings under term loan credit facility, net of original issuance discount | 148,500 | 0 | 0
Principal payments under term loan credit facility | (146,393) | (50,470) | (1,880)
Principal payments under industrial revenue bond | 0 | 0 | (93)
Debt issuance costs paid | (791) | (164) | (476)
Convertible senior notes repurchase | 0 | 0 | (80,200)
Stock repurchases | (18,895) | (33,707) | (58,383)
Net cash used in financing activities | (43,957) | (101,598) | (158,129)
Cash, cash equivalents, and restricted cash: |  |  |
Net increase (decrease) in cash, cash equivalents, and restricted cash | 77,161 | 7,826 | (58,831)
Cash, cash equivalents, and restricted cash at beginning of period | 140,516 | 132,690 | 191,521
Cash, cash equivalents, and restricted cash at end of period | 217,677 | 140,516 | 132,690
Supplemental disclosures of cash flow information: |  |  |
Cash paid for interest | 23,411 | 26,234 | 27,386
(Refunds received) cash paid for income taxes | $ (4,670) | $ 20,379 | $ 24,243

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