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Stockholders' Equity (Details)
 3 Months Ended 9 Months Ended 121 Months Ended 164 Months Ended 180 Months Ended
Aug. 18, 2023
$ / shares
Aug. 16, 2023
USD ($)
shares
May 18, 2023
$ / shares
Mar. 01, 2023
$ / shares
Dec. 10, 2021
USD ($)
$ / shares
shares
Nov. 08, 2018
$ / shares
May 18, 2018
$ / shares
Sep. 30, 2023
USD ($)
$ / shares
Sep. 30, 2022
$ / shares
Sep. 30, 2023
USD ($)
$ / shares
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
 [2]
Nov. 03, 2022
USD ($)
Mar. 13, 2020
USD ($)
Schedule of Shareholders' Equity [Line Items]                                  
Stock repurchase program, authorized amount                               $ 50 $ 20,000,000
Remaining authorized repurchase amount               $ 25,000,000   $ 25,000,000              
Stock repurchased during period (in shares) | shares                   423,091 234,011     22,444,127      
Aggregate price of shares repurchased since inception                   $ 26,211,000 $ 8,921,000   $ 302,976,000        
Average price of shares repurchased since inception (per share) | $ / shares                   $ 61.95 $ 38.12     $ 13.50      
Cash dividends declared per common share (in dollars per share) | $ / shares [1]               $ 0.08 $ 0 $ 0.24 $ 0.13            
Annualized dividends paid per common share (in dollars per share) | $ / shares $ 0.32   $ 0.32 $ 0.32   $ 0.32 $ 0.26                    
Stock split, conversion ratio   1.5                              
Stock split, additional shares issued (in shares) | shares   1                              
Stock split, original number of shares held (in shares) | shares   2                              
Cash paid in lieu of fractional shares   $ 500,000                              
Stock split, common stock value reclass   100,000           $ 325,000 [2]   $ 325,000 [2]         $ 322,000    
Stock split, retained earnings reclass   $ (100,000)           $ 572,285,000 [2]   $ 572,285,000 [2]         $ 461,657,000    
BasX, LLC                                  
Schedule of Shareholders' Equity [Line Items]                                  
Contingent consideration         $ 78,000,000                        
Equity interest issued (in shares) | shares         1,560,000                        
Equity interests issuable (in dollars per share) | $ / shares         $ 0.004                        
Contingent liability         $ 60,000,000                        
Shares issued (in shares) | shares                   580,000 730,000            
Dividend Declared                                  
Schedule of Shareholders' Equity [Line Items]                                  
Cash dividends declared per common share (in dollars per share) | $ / shares $ 0.08   $ 0.08 $ 0.08   $ 0.16 $ 0.13                    
Open market                                  
Schedule of Shareholders' Equity [Line Items]                                  
Stock repurchased during period (in shares) | shares                   402,873 53,218 6,893,924          
Aggregate price of shares repurchased since inception                   $ 25,009,000 $ 2,030,000 $ 106,625,000          
Average price of shares repurchased since inception (per share) | $ / shares                   $ 62.08 $ 38.14 $ 15.47          
401(k)                                  
Schedule of Shareholders' Equity [Line Items]                                  
Stock repurchased during period (in shares) | shares                   0 155,904     12,462,552      
Aggregate price of shares repurchased since inception                   $ 0 $ 5,913,000     $ 171,789,000      
Average price of shares repurchased since inception (per share) | $ / shares                   $ 0 $ 37.93     $ 13.78      
Employees                                  
Schedule of Shareholders' Equity [Line Items]                                  
Stock repurchased during period (in shares) | shares                   20,218 24,889   3,087,651        
Aggregate price of shares repurchased since inception                   $ 1,202,000 $ 978,000   $ 24,562,000        
Average price of shares repurchased since inception (per share) | $ / shares                   $ 59.45 $ 39.29   $ 7.95        
[1] 1 Reflects three-for-two stock split effective August 16, 2023.
[2] 2 Reflects three-for-two stock split effective August 16, 2023.