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Related Parties - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 13, 2018
Jun. 05, 2018
Jun. 30, 2019
Jun. 30, 2018
Related Party Transaction [Line Items]        
Purchase of common shares 300,000   359,959  
Total cost of share purchased     $ 383 $ 3,072
Common Shares [Member]        
Related Party Transaction [Line Items]        
Purchase of common shares     360 1,816
Total cost of share purchased     $ 180 $ 908
Common Shares [Member] | Director [Member]        
Related Party Transaction [Line Items]        
Purchase of common shares   70,000    
Repurchase of common shares per share   $ 1.40    
Total cost of share purchased   $ 98    
Management [Member]        
Related Party Transaction [Line Items]        
Legal services to these law firms     306 229
Amount payable to law firms     $ 47 $ 10