AVAILABLE-FOR-SALE SECURITIES - OTTI Charges (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Cumulative credit (loss) at beginning of period	$ (3,074,728)	$ (3,803,650)	$ (3,074,728)	$ (3,636,432)
Additions:
Initial (increase) in credit reserves	0	0	0	0
Subsequent (increase) in credit reserves	0	(374,124)	0	(541,342)
Initial additional other-than-temporary credit impairment losses	0	0	0	0
Subsequent additional other-than-temporary credit impairment losses	0	(183,790)	0	(183,790)
Reductions:
For securities sold decrease in credit reserves	0	354,334	0	354,334
For securities sold decrease in other-than-temporary impairment	0	0	0	0
Cumulative credit (loss) at end of period	$ (3,074,728)	$ (4,007,230)	$ (3,074,728)	$ (4,007,230)