Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Accrued compensation costs	$ 569	$ 411
Accrued professional fees	255	236
Accrued taxes and regulatory fees	156	137
Customer deposits	136	127
Other accrued expenses and liabilities	417	286
Accrued dividends on Series A-2 Preferred Stock	0	4
Accrued expenses and other liabilities	$ 1,533	$ 1,201