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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
Cash Flows From Operating Activities: |  |
Net income | $ 10,944 | $ 13,533
Adjustments to reconcile net income to net cash provided by operating activities |  |
Depreciation and amortization | 11,682 | 11,071
Deferred income taxes | (931) | (563)
Stock based compensation expense | 2,640 | 2,374
Debt issue cost amortization recorded in interest expense | 109 | 131
Other | 360 | 581
Changes in operating assets and liabilities, net of acquisition: |  |
Trade receivables | (2,136) | (13,643)
Inventories | (4,575) | 1,664
Prepaid expenses and other assets | (725) | (232)
Accounts payable | 492 | (727)
Accrued liabilities | (2,840) | 2,815
Net cash provided by operating activities | 15,020 | 17,004
Cash Flows From Investing Activities: |  |
Purchase of property and equipment | (6,560) | (9,280)
Cash paid for acquisitions, net of cash acquired | (14,728) |
Net cash used in investing activities | (21,288) | (9,280)
Cash Flows From Financing Activities: |  |
Borrowings on long term debt | 26,979 | 9,091
Principal payments of long-term debt | (12,299) | (15,000)
Payment of debt issuance costs | (401) |
Dividends paid to stockholders | (875) | (887)
Stock transactions under employee benefit stock plans | (814) | (717)
Net cash provided by (used in) financing activities | 12,590 | (7,513)
Effect of foreign exchange rate changes on cash | 489 | (306)
Net increase (decrease) in cash and cash equivalents | 6,811 | (95)
Cash and cash equivalents at beginning of period | 13,416 | 8,673
Cash and cash equivalents at end of period | $ 20,227 | $ 8,578

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