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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows from operating leases | $ (1,317) | $ (2,389) |  |
Operating lease right-of-use assets obtained in exchange for lease obligations | 0 | 409 |  |
Operating lease right-of-use assets obtained in exchange for lease obligations from acquisitions | (398) | 0 |  |
Reconciliation of Cash and Cash Equivalents and Restricted Cash: |  |  |  |
Cash and cash equivalents | 137,588 | 155,089 | $ 114,422 |
Restricted cash | 500 | 504 |  |
Total | $ 138,088 | $ 155,593 | $ 114,927 | $ 172,084

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