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Property, Plant, and Equipment - Narrative (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2008
USD ($)
Facility
Sep. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Sep. 30, 2017
USD ($)
Property, Plant and Equipment [Line Items]            
Impairment charges     $ 0 $ 0 $ 0  
Disposed equipment, historical cost   $ 3,285,000        
Net book value     65,756,000 40,845,000    
Depreciation     10,004,000 7,656,000 4,550,000  
Sale leaseback transaction, number of properties, in facilities | Facility 2          
Sale leaseback transaction, gross proceeds, manufacturing and office facilities $ 18,250,000          
Sale leaseback transaction, deferred gain, gross 726,000          
Sale leaseback transaction, expenses $ 523,000          
Sale leaseback transaction, lease terms 20 years          
Other liabilities $ 203,000          
Sale leaseback transaction, gain recognized     $ 10,000 $ 10,000 $ 10,000  
Disposal Group, Not Discontinued Operations            
Property, Plant and Equipment [Line Items]            
Net book value           $ 2,122,000