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Equity Compensation Plans - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Feb. 18, 2021
May 31, 2016
Sep. 30, 2021
Sep. 30, 2020
Jul. 27, 2021
Jul. 26, 2021
Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Common stock, shares authorized   4,300,000 500,000,000   500,000,000 300,000,000 500,000,000
Expiration date of Incentive Plan     May 12, 2026        
Performance Share Units              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Awards vesting period 3 years            
Performance Share Units | Executive Officers              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Shares awarded 254,493            
Restricted Stock and Performance Shares Units | Employee              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Stock compensation expense     $ 2,112 $ 1,667      
Minimum | Performance Share Units              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share based compensation arrangement by share based payment award number share issuable percentage 0.00%            
Maximum | Performance Share Units              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share based compensation arrangement by share based payment award number share issuable percentage 150.00%            
Long Term Incentive Plan | Performance Share Units              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Awards performance period 3 years            
Awards service period 1 year            
Long Term Incentive Plan | Minimum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Awards vesting period   2 years          
Long Term Incentive Plan | Maximum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Awards vesting period   4 years