v3.22.4
Equity and Stock-Based Compensation (Narrative) (Details)
 1 Months Ended 3 Months Ended 9 Months Ended 15 Months Ended 17 Months Ended 20 Months Ended
Jul. 12, 2021
USD ($)
Apr. 21, 2021
shares
Feb. 04, 2021
USD ($)
day
shares
May 31, 2022
USD ($)
shares
Mar. 31, 2022
USD ($)
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
$ / shares
Dec. 05, 2017
USD ($)
$ / shares
Class of Stock [Line Items]                            
Issuance of common stock | $             $ 34,232,000 $ 35,041,000 $ 99,809,000          
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 | $         $ 240,000 $ 229,000                
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 0 0 1,700,000     1,700,000    
Proceeds received | $           $ 0 $ 0 $ 0 $ 10,000,000     $ 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 0 781,000   766,000      
Proceeds received | $           $ 0 $ 0 $ 0 $ 4,217,000   $ 4,200,000      
July 2021 Equity Distribution Agreements                            
Class of Stock [Line Items]                            
Shares sold (in shares)           0 4,183,000 0 4,183,000 4,700,000        
Proceeds received | $           $ 0 $ 21,149,000 $ 0 $ 21,149,000          
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]                            
Issuance of common stock (in shares)             6,550,000 6,000,000 17,714,000          
Issuance of common stock | $             $ 66,000 $ 60,000 $ 178,000          
Shares of stock repurchased during period (in shares)           156,000   249,000 50,000          
Common Stock | Director                            
Class of Stock [Line Items]                            
Issuance of common stock (in shares)       45,000                    
Issuance of common stock | $       $ 252,000                    
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% 8.25% 8.25%          
Annual preferred stock dividend (in dollars per share) | $ / shares               $ 2.0625