Quarterly report pursuant to Section 13 or 15(d)

Equity and Mezzanine Equity - Additional Information (Details)

v3.20.2
Equity and Mezzanine Equity - Additional Information (Details)
3 Months Ended 9 Months Ended
Sep. 22, 2020
USD ($)
$ / shares
shares
Jan. 01, 2019
Sep. 30, 2020
USD ($)
holder
quarter
$ / shares
shares
Sep. 30, 2019
USD ($)
shares
Sep. 30, 2020
USD ($)
holder
quarter
$ / shares
shares
Sep. 30, 2019
USD ($)
shares
Aug. 04, 2020
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Jun. 15, 2016
shares
Jun. 04, 2015
shares
Equity [Line Items]                    
Convertible preferred stock, terms of conversion         20          
Preferred stock, redemption price (in usd per share) | $ / shares     $ 25.00   $ 25.00          
Arrears | $         $ 27,070,000.00          
Stock Repurchased and Retired During Period, Shares 71,343                  
Stock Repurchased And Retired, Price Per Share (in dollars per share) | $ / shares $ 15.50                  
Stock Repurchased and Retired During Period, Value | $ $ 1,830,000                  
SAR's, allowance for issuance (in shares)             5,000,000      
SAR's, price per share (in dollars per share) | $ / shares             $ 1.85      
Series A Preferred                    
Equity [Line Items]                    
Preferred stock, shares outstanding (in shares)     562   562     562    
Preferred stock, shares authorized (in shares)     4,500   4,500     4,500    
Preferred stock, liquidation price per share (in dollars per share) | $ / shares     $ 1,000   $ 1,000     $ 1,000    
Preferred stock, aggregate liquidation preference | $     $ 562,000   $ 562,000     $ 562,000    
Preferred stock shares issued (in shares)     562   562     562    
Preferred stock, per share amounts of preferred dividends in arrears (in usd per share) | $ / shares         $ 180.00          
Arrears | $     $ 13,000 $ 13,000 $ 39,000 $ 39,000        
Series D Preferred Stock                    
Equity [Line Items]                    
Preferred stock, shares outstanding (in shares)     3,529,293   3,529,293          
Preferred stock, shares authorized (in shares)     4,000,000   4,000,000          
Preferred stock, liquidation price per share (in dollars per share) | $ / shares     $ 25.00   $ 25.00          
Preferred stock, aggregate liquidation preference | $     $ 106,760,000   $ 106,760,000     $ 101,660,000    
Preferred stock, dividend rate (as a percent)   10.75%     8.75%          
Preferred stock shares issued (in shares)     3,529,293   3,529,293     3,600,636    
Preferred stock, initial liquidation preference (in usd per share) | $ / shares     $ 2.1875   $ 2.1875          
Preferred stock, dividend over initial rate (as a percent)         2.00%          
Convertible preferred stock conversion price (in usd per share) | $ / shares         $ 16.96          
Number of business days to increase dividend rate after failure to pay any dividend         3          
Preferred stock, liquidation preference per share per annum (in usd per share) | $ / shares     $ 0.50   $ 0.50          
Number of quarters Series D Preferred in arrears before Board of Directors increase | quarter     6   6          
Increase in number of directors after triggering event | holder     2   2          
Percentage of Series D Preferred required to request election of new directors     20.00%   20.00%          
Series B Convertible Preferred Stock                    
Equity [Line Items]                    
Preferred stock, shares authorized (in shares)     5,000,000   5,000,000     5,000,000    
Preferred stock, liquidation price per share (in dollars per share) | $ / shares     $ 25.00   $ 25.00     $ 25.00    
Preferred stock, aggregate liquidation preference | $     $ 46,900,000   $ 46,900,000     $ 46,900,000    
Preferred stock, dividend rate (as a percent)         9.00%          
Preferred stock shares issued (in shares)     1,875,748   1,875,748     1,875,748    
Preferred stock adjusted conversion (in usd per share) | $ / shares     $ 58   $ 58          
Preferred stock, redemption price (in usd per share) | $ / shares     $ 40.00   $ 40.00          
Redeemable Preferred Stock                    
Equity [Line Items]                    
Preferred stock, shares outstanding (in shares)     562   562          
Common Stock [Member] | 2015 Long-Term Incentive Plan                    
Equity [Line Items]                    
Maximum number of shares authorized under Share Incentive Plan (in shares)                   125,000
Shares available for issuance under Share Incentive Plan (in shares)     41,104   41,104          
Shares issued in period (in shares)     0 0 0 0        
Common Stock [Member] | 2016 Long-Term Incentive Plan                    
Equity [Line Items]                    
Maximum number of shares authorized under Share Incentive Plan (in shares)                 625,000  
Shares available for issuance under Share Incentive Plan (in shares)     132,707   132,707          
Series B Preferred Stock                    
Equity [Line Items]                    
Preferred stock, shares outstanding (in shares)     1,875,748   1,875,748     1,875,748    
Preferred stock, shares authorized (in shares)     5,000,000   5,000,000     5,000,000    
Preferred stock, aggregate liquidation preference | $     $ 46,900,000   $ 46,900,000     $ 46,900,000    
Preferred stock shares issued (in shares)     1,875,748   1,875,748     1,875,748    
Preferred stock, per share amounts of preferred dividends in arrears (in usd per share) | $ / shares         $ 4.50          
Arrears | $     $ 1,056,000 $ 1,056,000 $ 3,166,000 $ 3,166,000        
Series D Preferred                    
Equity [Line Items]                    
Preferred stock, shares outstanding (in shares)     3,529,293   3,529,293     3,600,636    
Preferred stock, per share amounts of preferred dividends in arrears (in usd per share) | $ / shares         $ 5.25          
Arrears | $     $ 2,372,000 $ 2,419,000 $ 7,210,000 $ 7,257,000        
Temporary Equity, Other Changes | $     $ (1,833,000)              
Equity Distribution Agreement | Series A Preferred | Preferred Stock [Member]                    
Equity [Line Items]                    
Preferred stock, dividend rate (as a percent)         9.00%          
Conversion price percentage         103.00%          
Maximum | Series D Preferred Stock                    
Equity [Line Items]                    
Preferred stock, dividend rate (as a percent)         14.00%