XML 60 R48.htm IDEA: XBRL DOCUMENT v3.4.0.3
5.5% Series B Cumulative Convertible Preferred Stock (Details)
 3 Months Ended
Dec. 04, 2015
$ / shares
Jun. 09, 2015
USD ($)
$ / shares
shares
Mar. 31, 2016
USD ($)
$ / shares
shares
Mar. 31, 2015
USD ($)
Dec. 31, 2015
shares
Class of Stock [Line Items]          
Preferred stock conversion rate 1.3228        
Preferred dividends | $     $ 894,000 $ 0  
Series A Preferred Stock [Member]          
Class of Stock [Line Items]          
Series B preferred stock, shares issued (in shares) | shares   2,600,000      
Preferred stock dividend rate 5.50% 5.50%      
Preferred stock, par value (in dollars per share) $ 0.01        
Issuance of preferred stock (in dollars per share)   $ 25.00      
Underwriting discount | $   $ 1,500,000      
Issuance of preferred stock, net of discount (in dollars per share)   $ 24.4125      
Proceeds from issuance of stock, net of discounts and Expenses | $   $ 62,200,000      
Series B Preferred Stock [Member]          
Class of Stock [Line Items]          
Series B preferred stock, shares issued (in shares) | shares     2,600,000   2,600,000
Preferred stock dividend rate 5.50%        
Preferred stock, par value (in dollars per share) $ 0.01        
Series B preferred stock, shares outstanding (in shares) | shares     2,600,000   2,600,000
Initial conversion price (in dollars per share) $ 18.90        
Consecutive trading days     45 days    
Days ending prior to notice of conversion     3 days    
Annual preferred stock dividend     $ 1.375    
Minimum [Member] | Series B Preferred Stock [Member]          
Class of Stock [Line Items]          
Percent of conversion price     110.00%