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21) Quarterly Financial Data (unaudited): Schedule of quarterly financial data (Details) (USD $)
 12 Months Ended 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Unaudited
Sep. 30, 2013
Unaudited
Jun. 30, 2013
Unaudited
Mar. 31, 2013
Unaudited
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
Total revenues $ 215,315,020 $ 234,260,169 $ 159,567,270 $ 48,577,706 $ 50,552,791 $ 61,332,289 $ 54,852,234 $ 66,660,832 $ 63,747,903 $ 56,528,210 $ 47,323,223 $ 47,603,985 $ 41,324,687 $ 36,466,418 $ 34,172,180
Benefits and Expenses 205,491,293 212,908,876 158,330,717 48,415,406 48,588,507 56,862,769 51,624,611 58,806,804 57,615,608 51,491,833 44,994,631 46,020,518 40,490,197 36,325,240 35,494,762
Earnings (loss) before income taxes       162,300 1,964,284 4,469,520 3,227,623 7,854,029 6,132,295 5,036,377 2,328,592 1,583,467 834,490 141,178 (1,322,582)
Income tax benefit (expense) (2,237,806) (4,638,775) 62,205 1,324,619 (697,793) (1,670,275) (1,194,357) (386,772) (2,142,249) (1,443,345) (666,409) (741,425) (64,168) 63,689 804,109
Net Earnings (Loss) $ 7,585,921 $ 16,712,518 $ 1,298,758 $ 1,486,919 $ 1,266,491 $ 2,799,245 $ 2,033,266 $ 7,467,257 $ 3,990,046 $ 3,593,032 $ 1,662,183 $ 842,042 $ 770,322 $ 204,867 $ (518,473)
Net earnings per Class A equivalent common share (1) $ 0.65 $ 1.55 $ 0.12 $ 0.12 $ 0.11 $ 0.25 $ 0.19 $ 0.76 $ 0.42 $ 0.38 $ 0.18 $ 0.09 $ 0.09 $ 0.02 $ (0.06)
Net earnings per Class A equivalent common share - assuming dilution(1) $ 0.61 $ 1.47 $ 0.12 $ 0.12 $ 0.11 $ 0.24 $ 0.17 $ 0.69 $ 0.38 $ 0.36 $ 0.17 $ 0.09 $ 0.09 $ 0.02 $ (0.06)