Stock Repurchase Program, Repurchased Shares (Details) - Common Stock - USD ($)	3 Months Ended			9 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Mar. 31, 2017	Jun. 30, 2018
Class of Stock [Line Items]
Number of Shares (in shares)	30,680	235,628	211,296	477,604
Repurchased Amount	$ 409,143	$ 3,012,869	$ 2,717,871	$ 6,139,883
Average Price Per Share (in dollars per share)	$ 13.34	$ 12.79	$ 12.86	$ 12.86