XML 64 R52.htm IDEA: XBRL DOCUMENT v3.8.0.1
5.5% Series B Cumulative Convertible Preferred Stock (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Apr. 05, 2017
USD ($)
shares
Mar. 07, 2017
USD ($)
$ / shares
shares
Apr. 26, 2016
USD ($)
$ / shares
shares
Sep. 30, 2017
USD ($)
$ / shares
shares
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
day
$ / shares
shares
Sep. 30, 2016
USD ($)
Dec. 31, 2016
shares
Class of Stock [Line Items]                
Preferred dividends | $       $ 1,707 $ 994 $ 5,087 $ 2,866  
Series B Preferred Stock [Member]                
Class of Stock [Line Items]                
Preferred stock dividend rate   5.50% 5.50%     5.50%    
Initial conversion price (in dollars per share) | $ / shares       $ 18.90   $ 18.90    
Preferred stock conversion rate           1.3228    
Consecutive trading days | day           45    
Days ending prior to notice of conversion           3 days    
Issuance of common stock (in shares) | shares   2,000,000 290,850          
Issuance of preferred stock (in dollars per share) | $ / shares   $ 20.19 $ 17.24          
Proceeds from issuance of preferred stock | $   $ 39,900 $ 5,000          
Proceeds from issuance of stock, net of discounts and expenses | $   $ 38,200 $ 4,200          
Liquidation preference per share (in dollars per share) | $ / shares   $ 25.00 $ 25.00          
Series B preferred stock, shares outstanding (in shares) | shares       4,965,850   4,965,850   2,890,850
Annual preferred stock dividend (in dollars per share) | $ / shares           $ 1.375    
Series B Preferred Stock [Member] | Over-Allotment Option [Member]                
Class of Stock [Line Items]                
Issuance of common stock (in shares) | shares 100,000              
Proceeds from issuance of stock, net of discounts and expenses | $ $ 1,900              
Series B Preferred Stock [Member] | Minimum                
Class of Stock [Line Items]                
Percent of conversion price       110.00%   110.00%