Securities Available for Sale - Summary of Range of Losses (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) Security
Fair Value	$ 57,738,084
Unrealized Loss	$ (11,173,856)
Securities Group One [Member]
Number of Individual Securities | Security	2
Fair Value	$ 20,521,800
Unrealized Loss	$ (568,302)
Range of Loss	3.00%
Securities Group Two [Member]
Number of Individual Securities | Security	3
Fair Value	$ 25,122,564
Unrealized Loss	$ (2,094,002)
Securities Group Two [Member] | Minimum [Member]
Range of Loss	6.00%
Securities Group Two [Member] | Maximum [Member]
Range of Loss	10.00%
Securities Group Three [Member]
Number of Individual Securities | Security	1
Fair Value	$ 43,720
Unrealized Loss	$ (6,549)
Range of Loss	13.00%
Securities Group Four [Member]
Number of Individual Securities | Security	1
Fair Value	$ 3,560,000
Unrealized Loss	$ (837,254)
Range of Loss	19.00%
Securities Group Five [Member]
Number of Individual Securities | Security	1
Fair Value	$ 8,490,000
Unrealized Loss	$ (7,667,749)
Range of Loss	47.00%