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12) Capital Stock: Schedule of Activity in shares of capital stock (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Class A Common Stock
Common Stock Outstanding	14,535,577	13,819,006	13,109,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	8,183	42,634
Dividends	$ 692,635	$ 657,919
Conversion of Stock, Shares Issued	15,753	9,353
Class C Common Stock
Common Stock Outstanding	2,089,374	1,902,229	1,709,640
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	103,402	104,975
Dividends	$ 99,496	$ 96,967
Conversion of Stock, Shares Issued	(15,753)	(9,353)

X

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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Number of share options (or share units) exercised during the current period.

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