19) Acquisitions: Acquisition of Trans-Western Pro Forma (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Total revenues	$ 234,260,169	$ 159,567,270	$ 168,510,318
Net loss	16,712,518	1,298,758	(430,624)
Net earnings (loss) per Class A equivalent common share (1)	$ 1.65	$ 0.13	$ (0.04)
Net earnings (loss) per Class A equivalent common share - assuming dilution(1)	$ 1.57	$ 0.13	$ (0.04)
ProForma1Member
Total revenues	234,268,496	159,620,617	168,615,765
Net loss	$ 16,713,955	$ 1,314,026	$ (402,460)
Net earnings (loss) per Class A equivalent common share (1)	$ 1.65	$ 0.13	$ (0.04)
Net earnings (loss) per Class A equivalent common share - assuming dilution(1)	$ 1.57	$ 0.13	$ (0.04)