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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income (loss) | $ 27,841 | $ (25,221)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |
Depreciation and amortization | 63,173 | 70,458
Gain on sale of business |  | (508)
Loss on sales and/or abandonment of property and equipment | 630 | 1,303
Write-off of certain intangible assets and other long-term assets | 4,412 | 28,409
Amortization of right-of-use operating lease assets | 8,941 | 9,522
Fair value adjustments to contingent consideration | 3,322 | 884
Amortization of deferred credits | (81) | (103)
Amortization of long-term debt issuance costs | 453 | 453
Stock-based compensation expense | 11,589 | 10,268
Changes in operating assets and liabilities, net of acquisitions and divestitures: |  |
Trade receivables | (6,180) | 13,049
Other receivables | (3,173) | 1,170
Inventories | (11,180) | 15,668
Prepaid expenses and other current assets | (6,251) | (3,929)
Prepaid income taxes |  | (35)
Income tax refund receivables | 960 | (8,666)
Other assets | (3,638) | (1,088)
Trade payables | 1,181 | (2,682)
Accrued expenses | 19,575 | 22,591
Income taxes payable | (1,600) | 1,079
Deferred compensation payable | 606 | 541
Operating lease liabilities | (9,365) | (9,398)
Other long-term obligations | 201 | 4,590
Total adjustments | 73,575 | 153,576
Net cash provided by operating activities | 101,416 | 128,355
Capital expenditures for: |  |
Property and equipment | (19,612) | (35,590)
Intangible assets | (2,121) | (2,499)
Proceeds from the sale of property and equipment | 1,037 | 33
Proceeds from sale of business |  | 1,285
Cash received for settlement of current note receivable |  | 250
Cash paid in acquisitions, net of cash acquired | (1,858) | (260)
Net cash used in investing activities | (22,554) | (36,781)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from issuance of common stock | 17,814 | 4,954
Proceeds from issuance of long-term debt | 73,251 | 46,051
Payments on long-term debt | (145,876) | (128,306)
Contingent payments related to acquisitions | (10,579) | (12,991)
Payment of taxes related to an exchange of common stock | (576) | (866)
Net cash used in financing activities | (65,966) | (91,158)
Effect of exchange rates on cash | (908) | (185)
Net increase in cash and cash equivalents | 11,988 | 231
CASH AND CASH EQUIVALENTS: |  |
Beginning of period | 56,916 | 44,320
End of period | 68,904 | 44,551
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION |  |
Interest (net of capitalized interest of $345 and $679, respectively) | 4,155 | 8,138
Income taxes | 6,166 | 6,449
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES |  |
Property and equipment purchases in accounts payable | 2,842 | 2,726
Current note receivable converted to equity investment |  | 899
Proceeds from sale of business in other receivables |  | 321
Merit common stock surrendered (3 and 39 shares, respectively) in exchange for exercise of stock options | 179 | 1,467
Right-of-use operating lease assets obtained in exchange for operating lease liabilities | $ 827 | $ 7,285

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