4) Stock-based Compensation: Schedule of stock inventive plan changes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Class A Common Stock
Shares, Outstanding	741,973	589,801	741,973	618,261
Shares outstanding	$ 4.33	$ 3.97	$ 4.33	$ 3.89
Shares Exercised		(28,460)
Per Share Shares Exercised		$ 2.15
Options Exercisable	636,764	484,659
Options exercisable	$ 3.94	$ 3.45
Available options for future grant	$ 253,432	$ 454,842
Weighted average contractual term of options outstanding	7.12 years	7.50 years
Weighted average contractual term of options exercisable	6.70 years	7.03 years
Aggregated intrinsic value of options outstanding	$ 1,837,828	$ 844,342
Aggregated intrinsic value of options exercisable	$ 1,824,086	$ 844,342
Class C Common Stock
Shares, Outstanding	556,298	577,436	556,298	577,436
Shares outstanding	$ 4.61	$ 3.54	$ 4.61	$ 3.54
Options Exercisable	493,298	498,686
Options exercisable	$ 4.26	$ 2.99
Available options for future grant		$ 57,750
Weighted average contractual term of options outstanding	2.42 years	2.50 years
Weighted average contractual term of options exercisable	2.13 years	2.16 years
Aggregated intrinsic value of options outstanding	$ 1,264,540	$ 1,096,391
Aggregated intrinsic value of options exercisable	$ 1,264,540	$ 1,096,391