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Equity and Stock-Based Compensation (Narrative) (Details)
 1 Months Ended 3 Months Ended 9 Months Ended 11 Months Ended 14 Months Ended
Jul. 12, 2021
USD ($)
Apr. 21, 2021
shares
Feb. 04, 2021
USD ($)
day
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Mar. 31, 2021
USD ($)
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
$ / shares
Dec. 05, 2017
USD ($)
$ / shares
Class of Stock [Line Items]                      
Common stock, par value (in dollars per share) | $ / shares       $ 0.01 $ 0.01   $ 0.01 $ 0.01 $ 0.01 $ 0.01  
Performance Shares                      
Class of Stock [Line Items]                      
Award service period (in years)         3 years            
Granted (in shares)       41,000              
Fair value of units granted | $       $ 403,000              
Vesting period (in years)       3 years 3 years            
Performance Shares | Minimum                      
Class of Stock [Line Items]                      
Award performance target (as a percent)         0.00%            
Performance Shares | Maximum                      
Class of Stock [Line Items]                      
Award performance target (as a percent)         200.00%            
Private Placement | YA                      
Class of Stock [Line Items]                      
Shares authorized (in shares)     7,780,786                
Anniversary of agreement (in months)     36 months                
Percentage of the Market Price     95.00%                
Ownership threshold (as a percent)     4.99%                
Consecutive trading days after advance notice | day     5                
Maximum advance shares (in shares)     1,200,000                
Price per share percentage of average daily VWAP     100.00%                
Consecutive trading days prior to advance notice | day     5                
Structuring fee | $     $ 10,000                
Shares sold (in shares)         0 1,200,000     1,700,000    
Proceeds received | $         $ 0 $ 7,007,000     $ 10,000,000    
Private Placement | Lincoln Park                      
Class of Stock [Line Items]                      
Shares authorized (in shares)   8,893,565                  
Shares sold (in shares)   15,000     0 0   766,000      
Proceeds received | $         $ 0 $ 0   $ 4,200,000      
July 2021 Equity Distribution Agreements                      
Class of Stock [Line Items]                      
Shares sold (in shares)         0   4,700,000        
Proceeds received | $         $ 0            
July 2021 Equity Distribution Agreements | Virtu                      
Class of Stock [Line Items]                      
Maximum offering price | $ $ 100,000,000                    
Percentage of the gross sales price 1.00%                    
Common Stock                      
Class of Stock [Line Items]                      
Shares of stock repurchased during period (in shares)         93,000 50,000          
Stock Repurchase Program                      
Class of Stock [Line Items]                      
Common stock, par value (in dollars per share) | $ / shares                     $ 0.01
Share repurchase program authorized amount | $       $ 50,000,000 $ 50,000,000   $ 50,000,000 $ 50,000,000 $ 50,000,000   $ 50,000,000
Shares of stock repurchased during period (in shares)         0 0          
Series D Preferred Stock                      
Class of Stock [Line Items]                      
Preferred stock dividend rate (in dollars per share)         8.25% 8.25%          
Annual preferred stock dividend (in dollars per share) | $ / shares         $ 2.0625