4) Stock-based Compensation: Schedule of stock inventive plan changes (Details) (USD $)	6 Months Ended
Jun. 30, 2013	Dec. 31, 2012
Class A Common Stock
Shares, Outstanding	757,684	972,253
Shares outstanding	$ 1.97	$ 2.07
Shares Exercised	(138,537)
Per Share Shares exercised	$ 2.18
Shares Cancelled	(76,032)
Per Share Shares cancelled	$ 3.36
Options Exercisable	757,684
Options exercisable	$ 1.97
Weighted average contractual term of options outstanding	3.98 years
Weighted average contractual term of options exercisable	3.98 years
Aggregated intrinsic value of options outstanding	$ 2,999,954
Aggregated intrinsic value of options exercisable	2,999,954
Class C Common Stock
Shares, Outstanding	3,294,345	5,838,505
Shares outstanding	$ 1.78	$ 2.18
Shares Exercised	(1,906,022)
Per Share Shares exercised	$ 2.24
Shares Cancelled	(638,138)
Per Share Shares cancelled	$ 3.33
Options Exercisable	3,294,345
Options exercisable	$ 1.78
Weighted average contractual term of options outstanding	2.12 years
Weighted average contractual term of options exercisable	2.12 years
Aggregated intrinsic value of options outstanding	1,363,863
Aggregated intrinsic value of options exercisable	$ 1,363,863