Fair Value, Measurement on Recurring Basis (Details)	Dec. 31, 2015 USD ($) item	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Financial assets:
Available-for-sale securities, at fair value	$ 2,022,030	$ 2,499,709
Allowance for Loan losses	$ 86,761,575	115,487,320
Number of impaired loans | item	9
Aggregate carrying value, before reserves	$ 189,209,415	221,602,399	$ 221,600,000
Carrying Value
Financial assets:
Available-for-sale securities, at fair value	2,022,030	2,499,709
Derivative financial instruments	3,345	1,995
Financial liabilities:
Derivative financial instruments	4,669,273	13,908,163
Fair Value
Financial assets:
Available-for-sale securities, at fair value	2,022,030	2,499,709
Derivative financial instruments	3,345	1,995
Financial liabilities:
Derivative financial instruments	4,669,273	$ 13,908,163
Recurring basis | Level 1
Financial assets:
Available-for-sale securities, at fair value	470,314
Recurring basis | Level 2
Financial assets:
Available-for-sale securities, at fair value	1,551,716
Derivative financial instruments	3,345
Financial liabilities:
Derivative financial instruments	4,669,273
Recurring basis | Carrying Value
Financial assets:
Available-for-sale securities, at fair value	2,022,030
Derivative financial instruments	3,345
Financial liabilities:
Derivative financial instruments	4,669,273
Recurring basis | Fair Value
Financial assets:
Available-for-sale securities, at fair value	2,022,030
Derivative financial instruments	3,345
Financial liabilities:
Derivative financial instruments	4,669,273
Nonrecurring basis | Level 3
Financial assets:
Impaired loans, net	102,447,840
Nonrecurring basis | Carrying Value
Financial assets:
Impaired loans, net	102,447,840
Nonrecurring basis | Fair Value
Financial assets:
Impaired loans, net	$ 102,447,840