Quarterly report pursuant to Section 13 or 15(d)

Equity-Based Compensation - Additional Information (Detail)

v3.19.3
Equity-Based Compensation - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Stock Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Equity based compensation expense $ 313 $ 274 $ 401 $ 534
Income tax benefit to equity based compensation $ 69 $ 60 $ 89 $ 118
Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options maximum term     10 years  
Amended and Restated 2000 Incentive Plan [Member] | Stock Compensation Plan [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized 1,375,000   1,375,000  
Amended and Restated 2000 Incentive Plan [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock awarded 0 0 83,000 53,000
Amended and Restated 2000 Incentive Plan [Member] | Restricted Stock [Member] | Performance Vested Restricted Stock [Member] | Officer [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock awarded     40,000 27,000
Share-based compensation vesting percentage     100.00%  
Vesting period     3 years  
Amended and Restated 2000 Incentive Plan [Member] | Restricted Stock [Member] | Time Vested Restricted Stock [Member] | Officers and Key Employees [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock awarded     28,000 20,000
Share-based compensation vesting percentage     33.33%  
Vesting period     3 years  
Amended and Restated 2000 Incentive Plan [Member] | Restricted Stock [Member] | Time Vested Restricted Stock [Member] | Director [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock awarded     15,000 6,000
Share-based compensation vesting percentage     100.00%  
Vesting period     1 year  
Amended and Restated 2000 Incentive Plan [Member] | Restricted Stock [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized 467,000   467,000  
Amended and Restated 2000 Incentive Plan [Member] | Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option awards granted 0 0 0 0
Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Equity based compensation expense $ 11 $ 0 $ 11 $ 0
Income tax benefit to equity based compensation $ 2 $ 0 $ 2 $ 0
Maximum discount on purchase price of common stock percentage on fair market value     15.00%  
Common stock may be purchased 200   200