Quarterly report [Sections 13 or 15(d)]

Equity-Based Compensation - Additional Information (Detail)

v3.26.1
Equity-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 04, 2025
Jun. 08, 2022
Dec. 31, 2025
May 31, 2025
May 31, 2024
May 31, 2023
Apr. 30, 2023
Nov. 30, 2022
May 31, 2022
May 31, 2021
May 31, 2020
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Nov. 02, 2012
Class A Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted                       0 0    
Class B Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted                       137,765      
Non-Qualified Stock Options                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted                     86,764        
Fair value assumptions, strike price                     $ 10.18        
Fair value assumptions, risk free rate                     0.64%        
Fair value assumptions, expiration                     10 years        
Fair value assumptions, volatility                     48.00%        
Compensation expense forfeiture rate                     1.00%        
Compensation expense                       $ 515 $ 454    
Recognition period of unrecognized compensation expense related to unvested awards                       1 year 7 months 24 days   1 year 10 months 24 days  
Unrecognized compensation expense related to unvested awards     $ 3,771                 $ 3,256   $ 3,771  
2012 Equity Incentive Plan                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Shares reserved for issuance, authorized 4,237,500 2,737,500                         1,687,500
Increase in the number of shares issuable 1,500,000 1,050,000                          
Shares reserved for issuance                       1,766,101      
2012 Equity Incentive Plan | Non-Qualified Stock Options                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Fair value assumptions, strike price     $ 15.29   $ 14.65                 $ 15.29  
Fair value assumptions, risk free rate     4.18%   4.63%                    
Fair value assumptions, expiration     10 years   10 years                    
Fair value assumptions, volatility     32.63%   35.50%                    
Fair value assumptions, dividend     5.49%   5.19%                    
Compensation expense forfeiture rate     1.00%   1.00%                    
2012 Equity Incentive Plan | Non-Qualified Stock Options | Class B Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted     509,481   279,529                    
2012 Equity Incentive Plan | Employee                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted                   116,823          
Fair Value per unit                   $ 13.91          
2012 Equity Incentive Plan | Employee | Class A Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted           11,822     10,270            
Fair Value per unit           $ 18.61     $ 21.42            
2012 Equity Incentive Plan | Employee | Restricted Stock Units | Class A Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted     9,249                        
Fair Value per unit     $ 14.48                     14.48  
Restricted stock units\non-qualified stock options, granted description     Twenty-five percent of the RSUs granted will vest and settle on each of the first, second, third and fourth anniversaries of the grant date.     The RSUs will vest and settle on the third anniversary of the grant date.     The RSUs vested and settled in the form of Class A shares of SLP in May 2025.            
2012 Equity Incentive Plan | Employee | Restricted Stock Units | Class B Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted     23,704   53,902   101,192 92,154              
Fair Value per unit     $ 14.48   $ 14.65   $ 18.18 $ 18.99           $ 14.48  
Restricted stock units\non-qualified stock options, granted description     Twenty-five percent of the RSUs granted will vest and settle on each of the first, second, third and fourth anniversaries of the grant date.   Twenty-five percent of the RSUs granted will vest and settle on each of the first, second, third and fourth anniversaries of the grant date.   Twenty-five percent of the RSUs granted will vest and settle on each of the first, second, third and fourth anniversaries of the grant date. Twenty-five percent of the RSUs granted will vest and settle on each of the first, second, third and fourth anniversaries of the grant date.              
2012 Equity Incentive Plan | First Anniversary | Employee | Class A Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted         3,413                    
Fair Value per unit         $ 14.65                    
2012 Equity Incentive Plan | First Anniversary | Employee | Restricted Stock Units | Class A Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted       3,155                      
Fair Value per unit       $ 15.85                      
Restricted stock units\non-qualified stock options, granted description       The RSUs will vest and settle on the first anniversary of the grant date. The RSUs vested and settled in the form of Class A shares of SLP in May 2025                    
2012 Equity Incentive Plan | First Anniversary | Board of Directors                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock, vesting percentage     0.33%   0.33%                    
2012 Equity Incentive Plan | Second Anniversary | Board of Directors                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock, vesting percentage     0.33%   0.33%                    
2012 Equity Incentive Plan | Third Anniversary | Employee | Class B Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted         11,604                    
Fair Value per unit         $ 14.65                    
2012 Equity Incentive Plan | Third Anniversary | Employee | Restricted Stock Units | Class A Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units granted       10,726                      
Fair Value per unit       $ 15.85                      
Restricted stock units\non-qualified stock options, granted description       The RSUs will vest and settle on the third anniversary of the grant date.                      
2012 Equity Incentive Plan | Third Anniversary | Employee | Restricted Stock Units | Class B Common Stock                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units\non-qualified stock options, granted description         The RSUs will vest and settle on the third anniversary of the grant date.                    
2012 Equity Incentive Plan | Third Anniversary | Board of Directors                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock, vesting percentage     0.33%   0.33%                    
2012 Equity Incentive Plan | Fourth Anniversary | Employee                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock, vesting percentage               25.00%              
2012 Equity Incentive Plan | Fourth Anniversary | Board of Directors                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock, vesting percentage     0.33%   0.33%                    
2012 Equity Incentive Plan | Three Year Annual Vesting Period | Non-Qualified Stock Options                              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                              
Restricted stock units\non-qualified stock options, granted description                       One third of the NQOs will vest and become exercisable on each of the first, second and third anniversaries of the grant date.   One third of the NQOs will vest and become exercisable on each of the first, second and third anniversaries of the grant date.