Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 985,515	$ 3,386,418
Other comprehensive income, before tax:
Amortization (accretion) related to prior year service cost	554	(380)
Amortization of unrecognized loss	0	1,573
Unrealized gains on investments arising during the period	502,505	2,398,989
Reclassification adjustment for sales of securities included in net income	(502,199)	(34,829)
Reclassification adjustment for write-downs of securities included in net income	10,062	18,485
Other comprehensive income, before tax	10,922	2,383,838
Income tax expense related to postretirement health benefits	188	405
Income tax expense related to unrealized gains on investments arising during the year	176,573	828,745
Income tax benefit related to reclassification adjustment for sales of securities included in net income	(173,092)	(11,989)
Income tax expense related to reclassification adjustment for write-downs of securities included in net income	3,786	7,127
Net income tax expense on other comprehensive income	7,455	824,288
Other comprehensive income	3,467	1,559,550
Comprehensive Income	988,982	4,945,968
Comprehensive (loss) income attributable to redeemable noncontrolling interest	923	(9,688)
Comprehensive Income Attributable to the Company	$ 989,905	$ 4,936,280