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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |
Net loss | $ (29,091) | $ (13,196)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities: |  |
Depreciation and amortization | 12,863 | 17,174
Operating lease cost | 1,066 | 1,186
Non-cash compensation | 479 | 703
Deferred income tax expense | 1 | 10
Bad debt expense |  | 1,625
Change in other accrued long-term liabilities |  | (150)
Gain on disposal of assets | (198) | (240)
Remeasurement and other | (278) | 266
Change in operating assets and liabilities: |  |
(Increase) decrease in accounts receivable | (1,272) | 16,866
Decrease in prepaid expenses and other assets | 1,397 | 3,301
Increase (decrease) in accounts payable | 983 | (2,276)
Decrease in accrued liabilities | (453) | (2,722)
Decrease in operating lease liabilities | (1,112) | (1,204)
Decrease in deferred revenue | (435) | (1,702)
Net cash (used in) provided by operating activities | (16,050) | 19,641
Cash flows from investing activities: |  |
Capital expenditures, net of non-cash capital expenditures summarized below | (505) | (2,847)
Proceeds from maturity of short-term investments | 318 | 2,350
Acquisition of short-term investments |  | (583)
Proceeds from disposal of assets | 451 | 542
Proceeds from notes receivable |  | 26
Net cash provided by (used in) investing activities | 264 | (512)
Cash flows from financing activities: |  |
Proceeds from notes payable | 787 | 6,374
Principal payments on notes payable | (562) | (8,512)
Principal payments on finance leases | (55) | (2,326)
Tax withholdings related to stock-based compensation awards | (75) | (70)
Net cash provided by (used in) financing activities | 95 | (4,534)
Effect of exchange rate changes on cash and cash equivalents and restricted cash | 112 | 89
Net (decrease) increase in cash and cash equivalents and restricted cash | (15,579) | 14,684
Cash and cash equivalents and restricted cash at beginning of period | 45,955 | 31,271
Cash and cash equivalents and restricted cash at end of period | 30,376 | 45,955
Supplemental cash flow information: |  |
Cash paid for interest | 20 | 92
Cash paid for income taxes | 81 | 87
Cash received for income taxes | 21 | 402
Non-cash operating, investing and financing activities: |  |
Decrease in accrued purchases of property and equipment |  | (61)
Increase in right-of-use assets and operating lease liabilities | $ 1 | 64
Increase in right-of-use assets for prepaid rent |  | 3
Financed insurance premiums |  | $ 434

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