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v3.20.4

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating Activities |  |  |
Net income | $ 56,630 | $ 62,906 | $ 73,486
Adjustments to reconcile net income to cash provided by operating activities: |  |  |
Provision for doubtful accounts | 860 | 575 | 71
Depreciation - PP&E | 19,264 | 14,934 | 12,884
Depreciation - Rental | 9,830 | 9,373 | 6,725
Amortization of intangibles | 14,746 | 5,658 | 3,505
Amortization of debt issuance | 634 | 295 | 221
Stock-based compensation expense | 4,119 | 3,269 | 2,450
Provision for deferred income tax (benefit) expense | (1,301) | 3,316 | 2,052
Gain on sale of property, plant and equipment | (1,094) | (912) | (361)
Changes in operating assets and liabilities, net of acquisitions: |  |  |
Accounts receivable | 28,064 | 11,447 | (27,029)
Inventories | 39,895 | 657 | (25,991)
Rental equipment | 4,542 | (20,729) | (22,424)
Prepaid expenses and other | 6,373 | (4,633) | (583)
Trade accounts payable and accrued liabilities | (3,783) | 6,397 | 4,130
Income taxes payable | 6,601 | (4,861) | (10,332)
Long term tax payable | (3,478) | (1,082) | (6,196)
Other assets and liabilities, net | 2,431 | 2,203 | 302
Net cash provided by operating activities | 184,333 | 88,813 | 12,910
Investing Activities |  |  |
Acquisitions, net of cash acquired | 0 | (400,784) | 0
Purchase of property, plant and equipment | (17,874) | (31,337) | (26,587)
Proceeds from sale of property, plant and equipment | 3,703 | 2,277 | 1,341
Purchase of patents | 0 | (96) | (112)
Net cash used in investing activities | (14,171) | (429,940) | (25,358)
Financing Activities |  |  |
Borrowings on bank revolving credit facility | 115,000 | 217,000 | 159,000
Repayment on bank revolving credit facility | (255,000) | (157,000) | (134,000)
Principal payments on long-term debt and capital leases | (18,867) | (122) | 216
Proceeds from issuance of long-term debt | 0 | 300,002 | 0
Debt issuance cost | 0 | (2,875) | 0
Dividends paid | (6,124) | (5,626) | (5,124)
Proceeds from exercise of stock options | 1,459 | 2,573 | 2,552
Treasury stock repurchased | 0 | (4,140) | 0
Common stock repurchased | (710) | (589) | (436)
Net cash (used in) provided by financing activities | (164,242) | 349,223 | 22,208
Effect of exchange rate changes on cash | 1,964 | 172 | (1,090)
Net change in cash and cash equivalents | 7,884 | 8,268 | 8,670
Cash and cash equivalents at beginning of the year | 42,311 | 34,043 | 25,373
Cash and cash equivalents at end of the year | 50,195 | 42,311 | 34,043
Cash paid during the year for: |  |  |
Interest | 17,049 | 9,455 | 5,199
Income taxes | $ 17,140 | $ 23,099 | $ 30,295

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