Note 9 - Other Comprehensive Income (Loss) (Details) - Amounts Reclassified from AOCI to Income (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Amounts Reclassified from AOCI to Income [Abstract]
Realized gains on sale of securities (a)	$ 2,418,806	[1]	$ 249,927	$ 2,496,063	[1]	$ 448,186
Income tax expense (c)	(467,966)	[2]	(63,464)	(500,184)	[2]	(130,765)
Net of tax	1,950,840		186,463	1,995,879		317,421
Amortization of actuarial net loss (b)	(193,161)	[3]	(171,359)	(579,485)	[3]	(690,197)
Income tax benefit (c)	65,675	[2]	58,262	197,025	[2]	234,667
Net of tax	(127,486)		(113,097)	(382,460)		(455,530)
Total reclassifications for the period	$ 1,823,354			$ 1,613,419

[1] These items appear within net realized gains on investments in the consolidated income statements.

[2] These items appear within federal income taxes in the consolidated income statements.

[3] These items are included in the computation of net periodic benefit cost (see Note 10).