Earnings Per Share (Details) - USD ($)	3 Months Ended						9 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net Income	$ 1,206,578	$ 5,680,316	$ 4,006,936	$ 1,138,555	$ 4,670,090	$ 2,434,162	$ 10,893,830	$ 8,242,807
Weighted average common shares (in shares)	8,143,887			8,051,944			8,115,836	8,029,222
Effect of dilutive securities:
Options to purchase common stock (in shares)	15,437			36,326			23,178	41,830
Diluted average common shares (in shares)	8,159,324			8,088,270			8,139,014	8,071,052
Earnings Per Share of Common Stock:
Basic (in dollars per share)	$ 0.15			$ 0.14			$ 1.34	$ 1.03
Diluted (in dollars per share)	$ 0.15			$ 0.14			$ 1.34	$ 1.02