v3.26.1
SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
institution
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Product Information [Line Items]          
Intangible assets, impairment charges $ 0 $ 0 $ 0 $ 0  
Advertising costs $ 97,000 21,000 $ 161,000 $ 46,000  
Product warranty obligation term (in years) 1 year   1 year    
Deferred revenue $ 1,195,000   $ 1,195,000   $ 1,661,000
Revenue recognized     1,541,000    
Accounts receivable, net of allowance for doubtful accounts 2,660,000   2,660,000   3,365,000
Accounts receivable, allowance for doubtful accounts $ 157,000   $ 157,000   $ 157,000
Number of financial institutions | institution     3    
Number of operating segments | segment     1    
Number of reportable segments | segment     1    
Three Customers | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     56.00% 58.00%  
Three Customers | Accounts Receivable | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent       42.00%  
Customer One | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     29.00% 31.00%  
Customer One | Accounts Receivable | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     0.00% 2.00%  
Customer Two | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     16.00% 18.00%  
Customer Two | Accounts Receivable | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     37.00% 34.00%  
Customer Three | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     11.00% 9.00%  
Customer Three | Accounts Receivable | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     18.00%    
Customer Four | Accounts Receivable | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent       6.00%  
Four Customers | Accounts Receivable | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent     55.00%    
Largest Customer | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Product Information [Line Items]          
Business concentration risk, percent 30.00%   29.00%   31.00%
Fair Value, Inputs, Level 1          
Product Information [Line Items]          
Cash, cash equivalents and short-term investments $ 11,837,000   $ 11,837,000   $ 9,650,000
Retirement Savings 401(k) Plan          
Product Information [Line Items]          
Retirement plan, maximum employee contribution, percent     35.00%    
Retirement plan, employer matching contribution, percent of match, first 3% of employee deferral     100.00%    
Retirement plan, employer matching contribution, first 3% percent of employees' gross pay     3.00%    
Retirement plan, employer matching contribution, percent of match, next 2% of employee deferral     50.00%    
Retirement plan, employer matching contribution, next 2% of employees' gross pay     2.00%    
Retirement plan, matching contributions $ 58,000 $ 29,000 $ 106,000 $ 29,000  
Minimum          
Product Information [Line Items]          
Property and equipment, useful life 3 years   3 years    
Minimum | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Product Information [Line Items]          
Largest customer, transaction volume decrease (percent)     70.00%    
Maximum          
Product Information [Line Items]          
Property and equipment, useful life 7 years   7 years    
Maximum | Revenue from Contract with Customer Benchmark | Customer Concentration Risk          
Product Information [Line Items]          
Largest customer, transaction volume decrease (percent)     75.00%