Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Amended Employee Agreement - Stephen Rizzone - Additional Information (Detail)

v3.10.0.1
Commitments and Contingencies - Amended Employee Agreement - Stephen Rizzone - Additional Information (Detail) - USD ($)
6 Months Ended 12 Months Ended
May 21, 2015
Jan. 01, 2015
Dec. 12, 2013
Jun. 30, 2018
Dec. 31, 2015
Commitments And Contingencies [Line Items]          
Performance based equity plan, market capitalization minimum amount         $ 100,000,000
Performance based equity plan market capitalization maximum amount         $ 1,100,000,000
Performance Based Equity Plan [Member]          
Commitments And Contingencies [Line Items]          
Performance based equity plan, market capitalization minimum amount $ 100,000,000        
Performance share units to be earned on achievement of market capitalization growth 0        
Performance based equity plan market capitalization maximum amount $ 1,100,000,000        
Percentage of performance share units to be earned on achievement of market capitalization growth 100.00%     100.00% 100.00%
Percentage of performance share units to be paid on quarterly basis 50.00%        
Percentage of performance share units deferred 50.00%        
Percentage of performance share units to be paid on termination of employment agreement       25.00%  
Performance Share Units [Member] | Performance Based Equity Plan [Member]          
Commitments And Contingencies [Line Items]          
Share-based compensation arrangement by share-based payment award, options, grants in period, gross 639,075        
Second Employee Stock Option [Member]          
Commitments And Contingencies [Line Items]          
Share-based compensation arrangement by share-based payment award, options, grants in period, gross     496,546    
Deferred compensation arrangement with individual, exercise price     $ 6.00    
Employee Stock Option [Member]          
Commitments And Contingencies [Line Items]          
Share-based compensation arrangement by share-based payment award, options, grants in period, gross       0  
Deferred compensation arrangement with individual, maximum contractual term     48 months    
Deferred compensation arrangement with individual, exercise price     $ 1.68    
Vesting period     4 years    
Mr. Rizzone [Member]          
Commitments And Contingencies [Line Items]          
Agreement effective date   Jan. 01, 2015      
Initial term of agreement   4 years      
Officers' compensation       $ 365,000  
Employment agreement percentage of base salary       100.00%  
Mr. Rizzone [Member] | Employee Stock Option [Member]          
Commitments And Contingencies [Line Items]          
Share-based compensation arrangement by share-based payment award, options, grants in period, gross     275,689    
Deferred compensation arrangement with individual, maximum contractual term     10 years