Annual report pursuant to Section 13 and 15(d)

Supplemental Information - Summary of Certain Balance Sheet Amounts (Detail)

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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