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Supplemental Information - Summary of Certain Balance Sheet Amounts (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | $ 10,393 | $ 29,459
Less accumulated depreciation and amortization | (5,877) | (7,728)
Total | 4,516 | 21,731
Cash and cash equivalents | 3,427 | 13,823
Restricted cash | 99 | 499
Non-current restricted cash | 0 | 99
Total | 3,526 | 14,421
Common Warrants Financing Cost | 396 | 0
Prepaid expenses and other current assets | 210 | 859
Total | 606 | 859
Operating lease obligations – current | $ 367 | $ 0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Liabilities, Current | Liabilities, Current
Other current liabilities | $ 112 | $ 191
Total | 479 | 191
Land Under Capital Lease [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 0 | 5,690
Buildings [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 900 | 804
Buildings Under Capital Lease [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 0 | 3,812
Leasehold Improvements [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 364 | 215
Leasehold Improvements Under Capital Lease [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 0 | 10,023
Office Furniture and Equipment [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 7,803 | 5,409
Office Furniture and Equipment Under Capital Lease [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 414 | 1,788
Computer Equipment and Software [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 912 | 831
Construction in Progress [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | 0 | 849
Vehicles [Member] |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |
Total land, buildings, and equipment | $ 0 | $ 38

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