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Property, Plant, and Equipment - Narrative (Details)
1 Months Ended 12 Months Ended
Jul. 01, 2019
USD ($)
Mar. 31, 2008
USD ($)
Facility
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Property, Plant and Equipment [Abstract]          
Impairment charges     $ 0 $ 0 $ 0
Depreciation     12,249,000 10,004,000 7,656,000
Property, plant and equipment, disposals     958,000 0  
Loss on disposal     $ 61,000    
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 term   20 years      
Sale leaseback transaction, net gain   $ 203,000      
Sale leaseback transaction, gain recognized $ 89,000     $ 10,000 $ 10,000