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16) Leases: Lease cost recognized in earnings, amounts capitalized as right-of- use assets and cash flows from lease transactions (Details) - USD ($)
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Details    
Amortization of Right-Of-Use Assets $ 32,835  
Finance Lease, Interest Payment on Liability 1,873  
Operating Lease, Cost 1,532,256  
Short-term Lease, Cost 40,676  
Sublease Income (167,071)  
Lease, Cost 1,440,569  
Operating Cash Flows from Operating Leases 1,472,852  
Operating Cash Flows from Finance Leases 1,873  
Financing Cash Flows from Finance Leases 32,290  
Right-of-use assets obtained in exchange for operating lease liabilities 11,931,889 $ 0
Right-of-use assets obtained in exchange for finance lease liabilities $ 238,335 $ 0
Finance Lease, Weighted Average Remaining Lease Term 3 years 3 months 18 days  
Operating Lease, Weighted Average Remaining Lease Term 4 years 6 months 11 days  
Finance Lease, Weighted Average Discount Rate, Percent 5.14%  
Operating Lease, Weighted Average Discount Rate, Percent 4.88%