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Share-Based Payments - Additional Information (Detail)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
plan
$ / shares
shares
Dec. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Apr. 12, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of share-based compensation plans | plan 2      
Compensation cost charged against income $ 5,917 $ 6,569 $ 2,802  
Excess tax benefit related to vesting of restricted stock and exercise of stock options 201 647 805  
Stock compensation expense 5,917 $ 6,569 $ 2,802  
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation cost charged against income 1,288      
Stock compensation expense $ 1,288      
2010 Offering        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Warrant shares issued (in shares) | shares 32,425      
Warrant exercise price per share (in dollars per share) | $ / shares $ 12.00      
Warrants exercisable period 7 years      
Warrants outstanding (in shares) | shares 0 0    
2007 Omnibus Equity Incentive Plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized (in shares) | shares 4,000,000      
2007 Omnibus Equity Incentive Plan | Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options contractual term 10 years      
Weighted average fair value of options (in dollars per share) | $ / shares $ 9.68 $ 11.50 $ 14.43  
Unrecognized compensation cost, nonvested stock options $ 3,439      
Unrecognized compensation cost, period of recognition 1 year 7 months 6 days      
2007 Omnibus Equity Incentive Plan | Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost, period of recognition 8 months 12 days      
Number of restricted shares granted (in shares) | shares 1,255 126,288 27,282  
Total fair value of shares vested $ 2,395 $ 1,382 $ 1,432  
2007 Omnibus Equity Incentive Plan | Restricted Stock | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period of shares 3 years      
2007 Omnibus Equity Incentive Plan | Restricted Stock | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period of shares 5 years      
2017 Omnibus Equity Incentive Plan | Stock Option | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period of shares 2 years      
2017 Omnibus Equity Incentive Plan | Stock Option | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period of shares 5 years      
2017 Amended And Restated Omnibus Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for issuance (in shares) | shares 2,410,486      
2017 Amended And Restated Omnibus Equity Incentive Plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for issuance (in shares) | shares       3,500,000
2007 Omnibus Equity Incentive And 2017 Amended and Restated Omnibus Equity Plans        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost, nonvested stock options $ 3,099      
2007 Omnibus Equity Incentive And 2017 Amended and Restated Omnibus Equity Plans | Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost, nonvested stock options $ 1,093      
Unrecognized compensation cost, period of recognition 2 years 3 months 18 days