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12) Capital Stock: Schedule of Activity in shares of capital stock (Tables) | 12 Months Ended
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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

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