Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies Narrative (Details)

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Commitments and Contingencies Narrative (Details)
12 Months Ended
Nov. 12, 2019
USD ($)
Nov. 07, 2019
USD ($)
Jul. 19, 2018
USD ($)
Jan. 12, 2018
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Jan. 01, 2017
USD ($)
Loss Contingencies [Line Items]                
Lessee, Operating Lease, Term of Contract         5 years      
Lessee, Operating Lease, Renewal Term         5 years      
Gain (Loss) on Termination of Lease         $ 21,000 $ 0 $ 0  
Sublease Income         105,000 160,000    
Restructuring Reserve         $ 0 218,000 194,000 $ 0
Number of office spaces         2      
Term loan, at face value         $ 0 4,000,000    
Accrued prepayment fee       $ 800,000        
Proceeds from sale of BriefCam, Ltd.         41,000 9,778,000 0  
Loss on debt extinguishment         348,000 1,189,000 0  
Unamortized Debt Discount and Debt Issuance Costs $ 98,000              
Payment for debt extinguishment or debt prepayment cost 250,000              
Proceeds from Issuance of Common Stock   $ 8,200,000     8,200,000      
London, United Kingdom                
Loss Contingencies [Line Items]                
Restructuring Reserve         0 15,000 194,000 0
Minneapolis Headquarters                
Loss Contingencies [Line Items]                
Restructuring costs and asset impairment charges           177,000    
Gain (Loss) on Termination of Lease         21,000      
Restructuring Reserve         $ 0 $ 203,000 $ 0 $ 0
BriefCam, Canon Inc                
Loss Contingencies [Line Items]                
Proceeds from sale of BriefCam, Ltd.     $ 9,800,000          
ESW Holdings, Inc.                
Loss Contingencies [Line Items]                
Term loan, at face value       $ 10,000,000        
Periodic payment 4,800,000   6,500,000          
Periodic payment, interest 528,000   463,000          
Periodic payment, principal $ 4,000,000   6,000,000          
Loss on debt extinguishment     $ (1,200,000)          
Basis spread on variable rate       4.00%        
Hale Capital, LLP                
Loss Contingencies [Line Items]                
Term loan, at face value       $ 8,000,000        
Prepayment fee, percentage       10.00%