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Basis of Presentation and Adoption of Recently Issued Accounting Standards - Additional Information (Detail) - USD ($)
Mar. 31, 2020
Jul. 01, 2019
Jun. 30, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Operating lease liabilities $ 1,077,000    
Operating lease ROU assets $ 1,076,000   $ 0
Accounting Standards Codification ("ASC") 842 [Member]      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Operating lease liabilities   $ 1,423,000  
Operating lease ROU assets   1,423,000  
Impact on retained earnings   $ 0