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Shared-Based Compensation - Additional Information (Detail)
$ / shares in Units, $ in Millions
6 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of options granted (in shares) 158,700
Weighted average grant date fair value of the options granted (in dollars per share) | $ / shares $ 4.76
Restricted Stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock units issued (in shares) 460,255
Fair value assumptions, exercise price (in dollars per share) | $ / shares $ 9.35
Total grant-date fair value of restricted stock, vested | $ $ 1.0
TSR Awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock units issued (in shares) 139,000
Percentage of shares issuable based on threshold performance 50.00%
Percentage of shares issuable based on target performance 100.00%
Percentage of shares issuable based on maximum performance 150.00%
Threshold performance, percentage 35.00%
ROIC Awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock units issued (in shares) 157,000
Percentage of shares issuable based on threshold performance 35.00%
Percentage of shares issuable based on target performance 100.00%
Percentage of shares issuable based on maximum performance 150.00%
Threshold performance, percentage 4.90%
Officers and Key Employees | Restricted Stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock awards granted vesting period 3 years
Non-executive Directors | Restricted Stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock awards granted vesting period 1 year