Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Narrative (Details)

v3.19.3
Shareholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended 151 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Apr. 30, 2019
Capital Unit [Line Items]            
Shares authorized for repurchase (in shares) (up to)           37,500,000
Repurchase and retirement of common stock $ 526 $ 5,318 $ 10,873 $ 8,746    
Restricted stock units forfeited (in shares) 0   82,500      
Non-cash compensation expense $ 1,536 1,380 $ 4,474 $ 4,442    
Shares surrendered for tax withholdings (in shares)     1,002,460 247,379    
Preferred stock issued, net of underwriting discount and expense (18) (91) $ 9,431 $ (180)    
Preferred stock dividends declared and paid 8,702 8,507 25,987 25,523    
Common stock dividends declared and paid $ 1,793 2,448 $ 5,380 6,377    
Common Stock            
Capital Unit [Line Items]            
Repurchase and retirement of common stock (in shares) 155,571   2,041,958   27,226,063  
Repurchase and retirement of common stock $ 526   $ 7,078   $ 73,194  
Shares available for purchase (in shares) 10,273,937   10,273,937   10,273,937  
Common stock cash dividend (in dollars per share) $ 0.0125   $ 0.0125      
Common stock dividends declared and paid $ 1,793   $ 5,380      
Series A Preferred Stock            
Capital Unit [Line Items]            
Preferred stock issued, net of underwriting discount and expense (in shares) 0   389,207.000      
Preferred stock issued, net of underwriting discount and expense $ 18   $ 9,431      
Preferred stock dividends declared and paid 8,702   $ 25,987      
Dividends paid per share on monthly basis (in dollars per share)     $ 0.1667      
Employees            
Capital Unit [Line Items]            
Stock-based compensation 1,536 1,373 $ 4,459 4,408    
Consultants and Independent Financial Advisors            
Capital Unit [Line Items]            
Stock-based compensation 0 $ 7 15 $ 34    
Options            
Capital Unit [Line Items]            
Unrecognized compensation cost for stock based compensation $ 56   $ 56   $ 56  
Unrecognized compensation cost for stock based compensation, period of recognition     1 month 75 days      
Purchase of shares (in shares) 444,481   3,193,408      
Intrinsic value of options exercised $ 583   $ 6,917      
Restricted shares            
Capital Unit [Line Items]            
Unrecognized compensation cost for stock based compensation 12,363   $ 12,363   12,363  
Unrecognized compensation cost for stock based compensation, period of recognition     2 years 6 months 66 days      
Restricted shares | Employees            
Capital Unit [Line Items]            
Non-cash compensation expense 1,536   $ 4,459      
Restricted shares | Awards Granted In 2019            
Capital Unit [Line Items]            
Unrecognized compensation cost for stock based compensation $ 7,431   $ 7,431   $ 7,431  
Unrecognized compensation cost for stock based compensation, period of recognition     3 years 1 month 27 days      
Options, Warrants, and Other            
Capital Unit [Line Items]            
Shares surrendered for tax withholdings (in shares) 0   1,002,460