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Equipment, Software and Leasehold Improvements (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Equipment, Software and Leasehold Improvements, Net [Abstract]    
Equipment, software and leasehold improvements $ 5,918 $ 5,432
Accumulated depreciation (5,079) (4,816)
Equipment, software and leasehold improvements, net 839 616
Depreciation 284 330
Computer and Equipment [Member]    
Equipment, Software and Leasehold Improvements, Net [Abstract]    
Equipment, software and leasehold improvements 2,270 2,229
Software [Member]    
Equipment, Software and Leasehold Improvements, Net [Abstract]    
Equipment, software and leasehold improvements 2,150 1,695
Capitalization of internal-use software cost 500  
Leasehold Improvements [Member]    
Equipment, Software and Leasehold Improvements, Net [Abstract]    
Equipment, software and leasehold improvements 659 660
Furniture and Fixtures [Member]    
Equipment, Software and Leasehold Improvements, Net [Abstract]    
Equipment, software and leasehold improvements $ 839 $ 848