CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parentheticals) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement Of Income And Comprehensive Income [Abstract]
Taxes on unrealized appreciation (depreciation) on available-for-sale securities	$ 283,814	$ 46,030	$ 115,634	$ 1,092,959
Taxes on reclassification adjustment for realized gains included in net income	$ 18,742	$ 47,006	$ 90,848	$ 101,944