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Stock-Based Compensation - Additional Information (Detail)
$ in Millions
6 Months Ended
Jun. 30, 2016
USD ($)
Plan
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of stock based compensation plans | Plan 1
Unrecognized compensation cost related to unvested awards | $ $ 3.4
2014 Stock Incentive Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total aggregate number of shares of common stock that may be issued 6,420,000
Performance-Based Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period 3 years
Performance-Based Restricted Stock [Member] | Share-Based Compensation Award, Tranche One [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock-based Compensation vesting percentage 33.33%
Performance-Based Restricted Stock [Member] | Share-Based Compensation Award, Tranche Two [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock-based Compensation vesting percentage 33.33%
Performance-Based Restricted Stock [Member] | Share-Based Compensation Award, Tranche Three [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock-based Compensation vesting percentage 33.33%
Stock Appreciation Rights [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Fair value assumptions method used Black-Scholes option-pricing formula
Stock Awards Granted 0
Minimum [Member] | Performance-Based Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Percentage of target number of shares that will vest 0.00%
Maximum [Member] | Performance-Based Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Percentage of target number of shares that will vest 200.00%