21) Quarterly Financial Data (unaudited): Schedule of quarterly financial data (Details) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Unaudited	Sep. 30, 2012 Unaudited	Jun. 30, 2012 Unaudited	Mar. 31, 2012 Unaudited	Dec. 31, 2011 Unaudited	Sep. 30, 2011 Unaudited	Jun. 30, 2011 Unaudited	Mar. 31, 2011 Unaudited	Dec. 31, 2010 Unaudited	Sep. 30, 2010 Unaudited	Jun. 30, 2010 Unaudited	Mar. 31, 2010 Unaudited
Total revenues	$ 234,260,169	$ 159,567,270	$ 168,510,318	$ 66,660,832	$ 63,747,903	$ 56,528,210	$ 47,323,223	$ 47,603,985	$ 41,324,687	$ 36,466,418	$ 34,172,180	$ 41,519,506	$ 45,974,697	$ 43,048,988	$ 37,967,127
Benefits and Expenses	212,908,876	158,330,717	169,599,738	58,806,804	57,615,608	51,491,833	44,994,631	46,020,518	40,490,197	36,325,240	35,494,762	41,833,979	45,161,511	42,964,207	39,640,041
Earnings (loss) before income taxes				7,854,029	6,132,295	5,036,377	2,328,592	1,583,467	834,490	141,178	(1,322,582)	(314,473)	813,186	84,781	(1,672,914)
Income tax benefit (expense)	(4,638,775)	62,205	658,796	(386,772)	(2,142,249)	(1,443,345)	(666,409)	(741,425)	(64,168)	63,689	804,109	(87,766)	(309,757)	334,638	721,681
Net Earnings (Loss)	$ 16,712,518	$ 1,298,758	$ (430,624)	$ 7,467,257	$ 3,990,046	$ 3,593,032	$ 1,662,183	$ 842,042	$ 770,322	$ 204,867	$ (518,473)	$ (402,239)	$ 503,429	$ 419,419	$ (951,233)
Net earnings (loss) per Class A equivalent common share (1)	$ 1.65	$ 0.13	$ (0.04)	$ 0.76	$ 0.42	$ 0.38	$ 0.18	$ 0.09	$ 0.09	$ 0.02	$ (0.06)	$ (0.05)	$ 0.06	$ 0.05	$ (0.11)
Net earnings (loss) per Class A equivalent common share - assuming dilution(1)	$ 1.57	$ 0.13	$ (0.04)	$ 0.69	$ 0.38	$ 0.36	$ 0.17	$ 0.09	$ 0.09	$ 0.02	$ (0.06)	$ (0.05)	$ 0.06	$ 0.05	$ (0.11)