6) Earnings Per Share: Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Details
Net earnings	$ 2,624,063	$ 2,799,245	$ 2,762,911	$ 4,832,511
Weighted-average Class A equivalent common share outstanding (1)	11,835,185	11,724,522	11,844,936	11,669,542
GrantOfEmployeeStockOptions	$ 426,112	$ 846,990	$ 433,566	$ 888,095
Diluted weighted-average shares outstanding	12,261,297	12,571,512	12,278,502	12,557,637
Net earnings per Class A Equivalent common share (1)	$ 0.22	$ 0.24	$ 0.23	$ 0.41
Net earnings per Class A Equivalent common share-assuming dilution (1)	$ 0.21	$ 0.22	$ 0.23	$ 0.38