Property, Plant, and Equipment - Additional Information (Details) - USD ($)  | 
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2021  | 
Mar. 31, 2020  | 
Mar. 31, 2021  | 
Mar. 31, 2020  | 
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| Property Plant And Equipment [Abstract] | ||||
| Depreciation expense | $ 347,000 | $ 622,000 | $ 1,036,000 | $ 1,449,000 | 
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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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