Earnings Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net income (loss)	$ (887,681)	$ (728,946)	$ 704,207	$ 10,233,761	$ 9,297,986	$ 5,122,585	$ 5,654,573	$ 4,926,318	$ 9,321,341	$ 25,001,462	$ 13,960,049
Denominator for basic and diluted earnings per share - weighted average shares (including for 2014, 2013 and 2013, unissued, vested directors' shares of 246,442, 255,039 and 232,224, respectively)									16,768,904	16,727,183	16,713,808
Vested directors' shares									246,442	255,039	232,224