Investment in Riverfront and Brooksville Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2015
Total Investment	$ 19,225		$ 19,225		$ 19,010
Total Assets of the Partnership	77,264		77,264		55,306
Net Loss of the Partnership			(183)		(188)
Company's share of Net Loss of the Partnership	$ (86)	$ (150)	$ (140)	$ (180)	$ (145)
Riverfront Holdings I, LLC
Ownership percent	76.91%		76.91%		76.91%
Total Investment	$ 11,705		$ 11,705		$ 11,517
Total Assets of the Partnership	$ 62,913		62,913		40,970
Net Loss of the Partnership			(143)		(108)
Company's share of Net Loss of the Partnership			$ (120)		$ (105)
Brooksville Quarry, LLC
Ownership percent	50.00%		50.00%		50.00%
Total Investment	$ 7,520		$ 7,520		$ 7,493
Total Assets of the Partnership	$ 14,351		14,351		14,336
Net Loss of the Partnership			(40)		(80)
Company's share of Net Loss of the Partnership			$ (20)		$ (40)