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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Other Liabilities Disclosure [Abstract]    
Compensation costs $ 526 $ 448
Customer deposits 86 118
Professional fees 129 104
Taxes and regulatory fees 19 22
Accrued rent 170 202
Accrued dividends on Series F Preferred Stock 94 136
Other accrued expenses and liabilities 7 8
Accrued expenses and other current liabilities $ 1,031 $ 1,038