Note 19: Acquisitions: Acquisition of Trans-Western Pro Forma (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Total revenues	$ 283,161,000	$ 226,936,674	$ 215,315,020
Net earnings	$ 12,622,880	$ 7,754,648	$ 7,585,921
Net earnings per Class A equivalent common share (1)	$ 0.92	$ 0.59	$ 0.58
Net earnings per Class A equivalent common share - assuming dilution(1)	$ 0.89	$ 0.57	$ 0.55
ProForma1Member
Total revenues	$ 283,161,000	$ 229,268,653	$ 220,011,370
Net earnings	$ 12,622,880	$ 7,996,405	$ 7,963,589
Net earnings per Class A equivalent common share (1)	$ 0.92	$ 0.61	$ 0.61
Net earnings per Class A equivalent common share - assuming dilution(1)	$ 0.89	$ 0.59	$ 0.58