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Financing - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2022
May 08, 2019
Aug. 24, 2017
Aug. 17, 2017
Jul. 01, 2015
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2017
Line of Credit Facility [Line Items]                        
Long-term debt           $ 93,837,000   $ 93,837,000     $ 113,633,000  
Repayments of debt               20,000,000 $ 15,000,000      
Term loans           75,000,000   75,000,000     75,000,000  
Debt issuance costs           1,163,000   1,163,000     $ 1,367,000  
Derivative, term of contract         5 years              
Fixed quarterly interest rate         1.52%              
Derivative notional amount         $ 39,250,000              
Outstanding balance, percent (equal to)         50.00%              
Derivative, loss on derivative           20,000 $ 129,000 58,000 $ 132,000      
Credit Agreement                        
Line of Credit Facility [Line Items]                        
Maximum borrowing capacity           120,000,000   120,000,000        
Long-term debt           75,000,000   75,000,000        
Outstanding letters of credit           1,170,000   1,170,000        
Purchase of stock (up to)               2,000,000        
Share repurchase (up to)               35,000,000        
Dividend and distributions (up to)               10,000,000        
Deferred finance costs                       $ 2,074,000
Debt issuance costs           671,000   671,000        
Credit Agreement | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Available borrowing capacity           $ 20,000,000   $ 20,000,000        
Interest rate, stated percentage           3.01%   3.01%        
Credit Agreement | Long-term Debt                        
Line of Credit Facility [Line Items]                        
Repayments of debt       $ 50,000,000                
Credit Agreement | Federal Funds | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, basis spread on variable rate               0.50%        
Credit Agreement | Base Rate | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, basis spread on variable rate               1.00%        
Credit Agreement | Minimum | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Line of credit facility, unused capacity, commitment fee percentage               0.20%        
Credit Agreement | Minimum | Base Rate | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, basis spread on variable rate               0.25%        
Credit Agreement | Minimum | LIBOR | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, basis spread on variable rate               1.25%        
Credit Agreement | Maximum | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Line of credit facility, unused capacity, commitment fee percentage               0.40%        
Credit Agreement | Maximum | Base Rate | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, basis spread on variable rate               1.25%        
Credit Agreement | Maximum | LIBOR | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, basis spread on variable rate               2.25%        
Long-term Debt | Credit Agreement                        
Line of Credit Facility [Line Items]                        
Repayments of debt     $ 50,000,000                  
Term loans           $ 95,000,000   $ 95,000,000        
Write off of deferred debt issuance cost                   $ 829,000    
Long-term Debt | Amendment                        
Line of Credit Facility [Line Items]                        
Maximum borrowing capacity   $ 35,000,000                    
Deferred finance costs   1,367,000                    
Write off of deferred debt issuance cost   $ 137,000                    
Debt instrument, term (in years)   2 years                    
Deferred financing costs capitalized   $ 370,000                    
Forecast | Long-term Debt | Credit Agreement                        
Line of Credit Facility [Line Items]                        
Debt instrument, periodic payment $ 3,000,000