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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 | $ 1,307 | $ 1,247
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation expense | 2,023 | 2,022
Amortization of intangible assets | 2,618 | 3,009
Deferred tax expense from stock issuances | 972 | 172
Write-off of deferred financing costs | 167 |
Amortization of deferred financing costs | 313 | 460
Stock-based compensation | 6,544 | 7,150
Provisions for accounts receivable | 599 | 738
Deferred tax (benefit) provision | (984) | 68
Loss on disposal of fixed assets |  | 4
Changes in operating assets and liabilities: |  |
Accounts receivable and contract assets | 10,764 | (8,090)
Prepaid expense and other assets | 2,134 | 1,008
Accounts payable | 323 | 189
Contract liabilities | (669) | (2,184)
Accrued expenses | 11,196 | 9
Net cash provided by operating activities | 37,307 | 5,802
Cash flows from investing activities |  |
Purchase of furniture, fixtures and equipment | (795) | (1,115)
Neuralify acquisition (Note 4) | (2,282) |
Net cash used in investing activities | (3,077) | (1,115)
Cash flows from financing activities |  |
Principal payments on borrowings, net | (7,013) | (2,688)
Payment of contingent consideration |  | (865)
Proceeds from issuance of employee stock purchase plan shares | 399 | 575
Debt financing costs | (934) |
Payments related to tax withholding for stock-based compensation | (1,909) | (2,732)
Treasury shares repurchased | (5,052) | (2,976)
Net cash used in financing activities | (14,509) | (8,686)
Effect of exchange rate changes on cash | 270 | (433)
Net increase (decrease) in cash, cash equivalents, and restricted cash | 19,991 | (4,432)
Cash, cash equivalents, and restricted cash, beginning of period | 18,241 | 18,725
Cash, cash equivalents, and restricted cash, end of period | 38,232 | 14,293
Non-cash investing and financing activities: |  |
Issuance of treasury stock for vested restricted stock awards | $ 6,305 | $ 847

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