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12) Capital Stock: Schedule of Activity in shares of capital stock (Tables)
 12 Months Ended
Dec. 31, 2017
Tables/Schedules  
Schedule of Activity in shares of capital stock

 

Class A

Class C  

Balance at December 31, 2015

     13,109,100

       1,709,640

Exercise of stock options

            42,634

          104,975

Stock dividends

          657,919

            96,967

Conversion of Class C to Class A

              9,353

             (9,353)

Balance at December 31, 2016

     13,819,006

       1,902,229

Exercise of stock options

              8,183

          103,402

Stock dividends

          692,635

            99,496

Conversion of Class C to Class A

            15,753

           (15,753)

Balance at December 31, 2017

     14,535,577

       2,089,374