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1. Overview and Summary of Significant Accounting Policies (Details 1) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Weighted average number of common shares used in basic net income per common share 13,542,403 11,588,776
Dilutive effects of stock options and unvested restricted stock 111,725 0
Weighted average number of common shares used in diluted net income per common share 13,654,128 11,588,776