Investment in Riverfront and Brooksville Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2015
Total Investment	$ 19,168		$ 19,010
Total Assets of the Partnership	64,890		55,306
Net Loss of the Partnership	(71)		(188)
Company's share of Net Loss of the Partnership	$ (54)	$ (30)	$ (145)
Riverfront Holdings I, LLC
Ownership percent	76.91%		76.91%
Total Investment	$ 11,635		$ 11,517
Total Assets of the Partnership	50,536		40,970
Net Loss of the Partnership	(53)		(108)
Company's share of Net Loss of the Partnership	$ (45)		$ (105)
Brooksville Quarry, LLC
Ownership percent	50.00%		50.00%
Total Investment	$ 7,533		$ 7,493
Total Assets of the Partnership	14,354		14,336
Net Loss of the Partnership	(18)		(80)
Company's share of Net Loss of the Partnership	$ (9)		$ (40)