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Impairment of Long-Lived Assets - Additional Information (Detail) - Promissory Note [Member]
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
a
Jun. 30, 2019
USD ($)
a
Impairment Of Long Lived Assets [Line Items]    
Promissory note receivable term   5 years
Principal amount of promissory note $ 600 $ 600
Area of real property non-recourse mortgaged for notes receivable | a 24.74 24.74
Promissory note maturity date   2019-10
Estimated market value of the note receivable $ 500 $ 500
Value of real property 371 $ 371
Impairment of notes receivable $ 129