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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Cash flows from operating activities: |  |
Net income | $ 8,215 | $ 4,407
Adjustments to reconcile net income to net cash (used in) provided by operating activities: |  |
Depreciation and amortization of property, plant and equipment and intangible assets | 10,697 | 9,665
Amortization of other long-term assets | 2,044 | 1,965
Accretion of discounted liabilities | (9) | 7
Amortization of deferred loan fees | 162 | 139
Provision for bad debts | 945 | 392
Loan principal and interest forgiveness | (672) |
Adjustment to contingent consideration | 1,014 |
Stock-based compensation | 3,598 | 2,545
Change in deferred income taxes | (353) | (1,562)
Change in fair value of an equity investment | (771) | (24)
Net foreign currency adjustments | (147) | 594
Loss from equity method investment | 87 | 38
Adjustment to bargain purchase gain on business acquisition | 121 |
Changes in assets and liabilities associated with operations: |  |
(Increase) decrease in net receivables | (25,317) | 16,421
Increase in inventories | (11,464) | (21,706)
Increase in prepaid expenses and other assets | (3,696) | (2,297)
Decrease in income tax receivable | 1,374 | 899
(Decrease) increase in net operating lease liability | (120) | 7
Increase (decrease) in accounts payable | 6,190 | (12,351)
Decrease in deferred revenue | (30,407) | (2,431)
Increase in accrued program costs | 19,098 | 12,577
Increase (decrease) in other payables and accrued expenses | 507 | (2,394)
Net cash (used in) provided by operating activities | (18,904) | 6,915
Cash flows from investing activities: |  |
Capital expenditures | (5,075) | (6,386)
Acquisition of product line | (10,000) |
Intangible assets | (241) | (3,889)
Investments | (184) | (1,190)
Net cash used in investing activities | (15,500) | (11,465)
Cash flows from financing activities: |  |
Net borrowings under line of credit agreement | 41,774 | 10,502
Payment of contingent consideration | (250) | (1,227)
Net payments from the issuance of common stock (sale of stock under ESPP, exercise of stock options, and shares purchased for tax withholding) | (2,393) | (2,123)
Payment of cash dividends | (1,189) | (1,168)
Net cash provided by financing activities | 37,942 | 5,984
Net increase in cash and cash equivalents | 3,538 | 1,434
Effect of exchange rate changes on cash and cash equivalents | 98 | 585
Cash and cash equivalents at beginning of period | 15,923 | 6,581
Cash and cash equivalents at end of period | 19,559 | 8,600
Cash paid during the period for: |  |
Interest | 1,873 | 2,902
Income taxes, net | 2,757 | 1,901
Non-cash transactions: |  |
ROU assets exchanged for lease liabilities | $ 12,067 | $ 1,502

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