Quarterly report pursuant to Section 13 or 15(d)

Equity-based Compensation - Additional Information (Detail)

v3.10.0.1
Equity-based Compensation - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 23, 2018
Jun. 30, 2018
Jun. 30, 2018
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Proceeds from reissuance of treasury stock     $ 5,000 $ 497,000
Issuance of restricted shares from treasury     5,000  
Additional Paid-in Capital [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Issuance of restricted shares from treasury     $ (453,000)  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period 126,000      
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value $ 0.04   $ 7.78  
Unrecognized compensation expense   $ 0 $ 0  
Restricted Stock [Member] | General and Administrative Expenses [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense   $ 400,000 $ 1,000,000  
Restricted Stock [Member] | Share-based Compensation Award, Tranche One [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage     50.00%  
Restricted Stock [Member] | Share-based Compensation Award, Tranche Two [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage     50.00%  
Share-based compensation arrangement by share-based payment award, award vesting rights     50% of the shares vest on July 1, 2018