Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Numerator: Basic and Diluted
Net income	$ 228	$ 6,381
Dividends paid	(2,746)	(2,738)
Undistributed income (loss)	$ (2,518)	$ 3,643
Percentage allocated to common shares	99.00%	99.10%
Undistributed income (loss) allocated to common shares	$ (2,493)	$ 3,610
Dividends paid on common shares outstanding	2,719	2,713
Net income available to common shares	$ 226	$ 6,323
Denominator: Basic and Diluted
Weighted average common shares outstanding	12,345,564	12,333,550
Adjustment for dilutive potential common shares	7,520	12,923
Weighted average shares - Diluted	12,353,084	12,346,473
Basic net income per share (in dollars per share)	$ 0.02	$ 0.51
Diluted net income per share (in dollars per share)	$ 0.02	$ 0.51