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8. Note Payable to Bank (Tables)
3 Months Ended
Mar. 31, 2018
Debt Disclosure [Abstract]  
Summary of notes payable to bank
At March 31, 2018 and December 31, 2017, the Company had the following notes payable to bank:        
    March 31,     December 31,  
    2018     2017  
Promissory note payable to First Security Bank of Missoula,            
bearing interest at 3.150%, payable on demand, collateralized            
by a lien on Certificate of Deposit   $ 15,815     $ 98,863  
                 
Promissory note payable to First Security Bank of Missoula,                
bearing interest at 3.150%, payable on demand, collateralized                
by a lien on Certificate of Deposit     81,302       93,702  
Total notes payable to the bank   $ 97,117     $ 192,565