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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Cash Flows From Operating Activities: |  |
Net income | $ 11,927 | $ 4,035
Adjustments to reconcile net income to net cash provided by (used in) operating activities |  |
Depreciation and amortization | 4,431 | 3,750
Deferred income taxes | (7,029) | (488)
Stock-based compensation expense | 797 | 789
Debt issue cost amortization recorded in interest expense | 35 | 38
Other | 890 | 72
Changes in operating assets and liabilities, net of acquisition: |  |
Trade receivables | (9,912) | (7,463)
Inventories | 56 | (3,978)
Prepaid expenses and other assets | 1,862 | 275
Accounts payable | 4,994 | 3,043
Accrued liabilities | (2,484) | (3,039)
Net cash provided by (used in) operating activities | 5,567 | (2,966)
Cash Flows From Investing Activities: |  |
Purchase of property and equipment | (3,076) | (1,696)
Consideration paid for acquisitions, net of cash acquired |  | (14,541)
Net cash used in investing activities | (3,076) | (16,237)
Cash Flows From Financing Activities: |  |
Proceeds from issuance of long-term debt |  | 26,979
Payment of debt issuance costs |  | (401)
Tax withholdings related to net share settlements of restricted stock | (256) | (256)
Net cash (used in) provided by financing activities | (256) | 26,322
Effect of foreign exchange rate changes on cash | (641) | (152)
Net increase in cash and cash equivalents | 1,594 | 6,967
Cash and cash equivalents at beginning of period | 23,131 | 13,416
Cash and cash equivalents at end of period | 24,725 | 20,383
Supplemental disclosure of cash flow information: |  |
Property, plant and equipment purchases in accounts payable or accrued expenses | $ 793 | $ 540

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