Quarterly report pursuant to Section 13 or 15(d)

Equity-based Compensation - Additional Information (Detail)

v3.8.0.1
Equity-based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 23, 2018
Mar. 31, 2018
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Proceeds from reissuance of treasury stock     $ 5
Issuance of restricted shares from treasury     $ 5
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   $ 400 $ 400
Restricted Stock [Member] | General and Administrative Expenses [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation expense   $ 600 $ 600
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 will vest on July 1, 2018,
Additional Paid-in Capital [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Issuance of restricted shares from treasury     $ (453)