XML 31 R43.htm IDEA: XBRL DOCUMENT v3.2.0.727
Property, Plant, and Equipment, net Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Sep. 30, 2014
Property, Plant and Equipment [Line Items]            
Gain from change in estimate on ARO obligation   $ 2,900   $ 2,879    
Asset retirement obligation, revision in estimated cash flows $ 0 800 $ 0 845 $ 0  
Accumulated depreciation $ 23,100     $ 23,100   $ 21,500
Leasehold Improvements            
Property, Plant and Equipment [Line Items]            
Decrease in property, plant, and equipment   $ 2,100