Securities Available for Sale at Fair Value - Schedule of Temporary Impaired Securities (Details)	6 Months Ended
	Mar. 31, 2018 USD ($)
Less than 12 Months, Fair Value	$ 125,062,452
Less than 12 Months, Unrealized Losses	(35,354,549)
12 Months or Longer, Fair Value	0
12 Months or Longer, Unrealized Losses	0
Preferred Stock [Member]
Less than 12 Months, Fair Value	3,568,452
Less than 12 Months, Unrealized Losses	(1,375,222)
12 Months or Longer, Fair Value	0
12 Months or Longer, Unrealized Losses	0
Common Stock [Member]
Less than 12 Months, Fair Value	121,494,000
Less than 12 Months, Unrealized Losses	(33,979,327)
12 Months or Longer, Fair Value	0
12 Months or Longer, Unrealized Losses	$ 0