Other Comprehensive Income (Loss) - components (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 137,147,363
Balance at end of period	126,701,977
Unrealized Net Gains (Losses) on Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(41,196)	$ (79,399)
Unrealized gain (loss)	(12,681)	110,136
Other comprehensive income (loss)	(12,681)	110,136
Balance at end of period	(53,877)	30,737
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(41,196)	(79,399)
Unrealized gain (loss)	(12,681)	110,136
Other comprehensive income (loss)	(12,681)	110,136
Balance at end of period	$ (53,877)	$ 30,737