Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation - Deferred Stock Units - Additional Information (Detail)

v3.8.0.1
Stock Based Compensation - Deferred Stock Units - Additional Information (Detail) - USD ($)
12 Months Ended
Jan. 04, 2016
Dec. 31, 2017
Dec. 31, 2016
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   1,253,085  
Deferred Stock Units [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   0  
Allocated share-based compensation expense   $ 1,362 $ 123,644
Share based compensation arrangement by share based payment award unamortized value   $ 0  
Mr. Gaulding [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock issued during period, value, share-based compensation, net of forfeitures $ 75,000    
Mr. Gaulding [Member] | Stipends [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock issued during period, value, share-based compensation, net of forfeitures $ 50,000    
Non-Employee Equity Compensation Plan 2014 [Member] | Mr. Gaulding [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 14,953    
Stock issued during period, value, share-based compensation, net of forfeitures $ 125,000