Note 9 - Other Comprehensive Income (Loss) (Details) - Amounts Reclassified from AOCI to Income (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Amounts Reclassified from AOCI to Income [Abstract]
Realized gains on sale of securities (a)	$ (10,710)	[1]	$ 86,606	$ 77,257	[1]	$ 198,259
Income tax expense (c)	(2,394)	[2]	(29,376)	(32,218)	[2]	(67,301)
Net of tax	(13,104)		57,230	45,039		130,958
Amortization of actuarial net loss (b)	(193,162)	[3]	(259,419)	(386,324)	[3]	(518,838)
Income tax benefit (c)	65,675	[2]	88,203	131,350	[2]	176,405
Net of tax	(127,487)		(171,216)	(254,974)		(342,433)
Total reclassifications for the period	$ (140,591)			$ (209,935)

[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).