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Leases (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Leases [Abstract] |  |
Schedule of the classification of operating and finance lease assets and obligations in the Company's Consolidated Balance Sheets | The following table summarizes the classification of operating and finance lease assets and obligations in the Company’s Condensed Consolidated Balance Sheets as of March 31, 2022 and December 31, 2021 (in thousands):
|  | March 31, 2022 |  |  | December 31, 2021 |
Operating leases: |  |  |  |  |  |  |  |
Right of use assets |  | $ | 1,579 |  |  | $ | 1,139 |
Operating lease liabilities, current |  |  | 295 |  |  |  | 235 |
Operating lease liabilities, noncurrent |  |  | 1,354 |  |  |  | 985 |
Total operating lease liabilities |  | $ | 1,649 |  |  | $ | 1,220 |
Finance leases: |  |  |  |  |  |  |  |
Right of use assets |  | $ | 94 |  |  | $ | 102 |
Finance lease liabilities, current |  | $ | 33 |  |  | $ | 32 |
Finance lease liabilities, noncurrent |  |  | 74 |  |  |  | 82 |
Total finance lease liabilities |  | $ | 107 |  |  | $ | 114 |
| The following table summarizes the classification of operating and finance lease assets and obligations in the Company’s Consolidated Balance Sheets as of December 31, 2021 and December 31, 2020 (in thousands):
|  | December 31, 2021 |  |  | December 31, 2020 |
Operating leases: |  |  |  |  |  |  |  |
Right of use assets |  | $ | 1,139 |  |  | $ | 1,415 |
Operating lease liabilities, current |  |  | 235 |  |  |  | 195 |
Operating lease liabilities, noncurrent |  |  | 985 |  |  |  | 1,219 |
Total operating lease liabilities |  | $ | 1,220 |  |  | $ | 1,414 |
Finance leases: |  |  |  |  |  |  |  |
Right of use assets |  | $ | 102 |  |  | $ | 145 |
Finance lease liabilities, current |  |  | 32 |  |  |  | 30 |
Finance lease liabilities, noncurrent |  |  | 82 |  |  |  | 115 |
Total finance lease liabilities |  | $ | 114 |  |  | $ | 145 |
Schedule of Maturities of lease liabilities for the Company's operating and finance leases | Maturities of lease liabilities for the Company’s operating and finance leases are as follows for the year ending March 31, 2022 (in thousands):
|  | Operating Leases |  |  | Finance Leases |  |  | Total |
2022 (remaining nine months) |  | $ | 315 |  |  | $ | 30 |  |  | $ | 345 |
2023 |  |  | 428 |  |  |  | 40 |  |  |  | 468 |
2024 |  |  | 440 |  |  |  | 40 |  |  |  | 480 |
2025 |  |  | 440 |  |  |  | 7 |  |  |  | 447 |
2026 |  |  | 355 |  |  |  | — |  |  |  | 355 |
Thereafter |  |  | 15 |  |  |  | — |  |  |  | 15 |
Total lease payments |  |  | 1,993 |  |  |  | 117 |  |  |  | 2,110 |
Less: imputed interest |  |  | (344 | ) |  |  | (10 | ) |  |  | (354 | )
Present value of lease liabilities |  | $ | 1,649 |  |  | $ | 107 |  |  | $ | 1,756 |
| Maturities of lease liabilities for the Company’s operating and finance leases are as follows for the year ending December 31, 2021 (in thousands):
|  | Operating Leases |  |  | Finance Leases |  |  | Total |
2022 |  | $ | 326 |  |  | $ | 40 |  |  | $ | 366 |
2023 |  |  | 332 |  |  |  | 40 |  |  |  | 372 |
2024 |  |  | 341 |  |  |  | 40 |  |  |  | 381 |
2025 |  |  | 282 |  |  |  | 7 |  |  |  | 289 |
2026 |  |  | 180 |  |  |  | — |  |  |  | 180 |
Thereafter |  |  | — |  |  |  | — |  |  |  | — |
Total lease payments |  |  | 1,461 |  |  |  | 127 |  |  |  | 1,588 |
Less: imputed interest |  |  | (241 | ) |  |  | (13 | ) |  |  | (254 | )
Present value of lease liabilities |  | $ | 1,220 |  |  | $ | 114 |  |  | $ | 1,334 |

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- Definition Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph (a) -Subparagraph (5) + Details
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