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13) Stock Compensation Plans: Schedule of Assumptions Used (Details)
12 Months Ended
Dec. 31, 2018
USD ($)
$ / shares
All Plans - November 30 2018  
Weighted Average Fair Value of Each Option $ 1.12
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Expected Dividend | $ $ 0.0500
Underlying stock FMV $ 4.91
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate 34.61%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 2.86%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 4 years 6 months 22 days
All Plans - December 1 2017  
Weighted Average Fair Value of Each Option $ 1.20
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Expected Dividend | $ $ 0.0500
Underlying stock FMV $ 4.80
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate 41.07%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 2.07%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 4 years 4 months 6 days