Contingent Liabilities (Details Narrative) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Sep. 30, 2012	Jun. 30, 2016	Jun. 30, 2015
Contingent Liabilities Details Narrative
Cap on environment financial responsibility	$ 1,871				$ 1,871
Environmental remediation expense	2,000		$ 0	$ 1,771	(1,000)	$ 0
Total cost of remediation	$ 1,900				$ 1,900
Environmental remediation recovery		$ 3,000	$ 0