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Stock-Based Compensation Plans (Details Narrative)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
Years
$ / shares
shares
Dec. 31, 2018
USD ($)
Number of stock option plans 2  
Options expire from date of grant 10 years  
Exercisable installments Immediate or 20% or 25%  
Shares available for future issuance | shares 439,248  
Dividend yield 0.00%  
Expected minimum volatility 29.00%  
Expected maximum volatility 41.00%  
Risk-free interest rate minimum 1.00%  
Risk-free interest rate maximum 2.90%  
Expected life minimum | Years 3.0  
Expecited life maximum | Years 7.0  
Aggregate intrinsic value of exercisable in-the-money options $ 1,239  
Aggregate intrinsic value of outstanding in-the-money options $ 1,240  
Market close price | $ / shares $ 45.55  
Gains realized by option holders $ 312  
Total unrecognized compensation cost of options granted but not yet vested $ 198  
Compensation cost not yet vested recognition period 2 years 10 months 24 days  
Stock compensation expense for the vesting of option grants due to asset disposition   $ 402
Restricted Stock [Member]    
Total unrecognized compensation cost of options granted but not yet vested $ 700  
Compensation cost not yet vested recognition period 3 years 7 months 6 days