XML 69 R51.htm IDEA: XBRL DOCUMENT v3.7.0.1
5.5% Series B Cumulative Convertible Preferred Stock (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Apr. 05, 2017
USD ($)
$ / shares
shares
Mar. 07, 2017
USD ($)
$ / shares
shares
Apr. 26, 2016
USD ($)
$ / shares
shares
Mar. 31, 2017
USD ($)
$ / shares
shares
Mar. 31, 2016
USD ($)
Dec. 31, 2016
shares
Class of Stock [Line Items]            
Preferred dividends | $       $ 1,673 $ 894  
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)       $ 18.90    
Preferred stock conversion rate       1.3228    
Consecutive trading days       45 days    
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)   $ 20.19 $ 17.24      
Proceeds from issuance of preferred stock | $   $ 39,900 $ 5,000      
Proceeds from issuance of stock, net of discounts and expenses | $   $ 38,400 $ 4,200      
Liquidation preference per share (in dollars per share)   $ 25.00 $ 25.00      
Series B preferred stock, shares outstanding (in shares) | shares       4,865,850   2,890,850
Annual preferred stock dividend (in dollars per share)       $ 1.375    
Series B Preferred Stock [Member] | Subsequent Event [Member]            
Class of Stock [Line Items]            
Issuance of preferred stock (in dollars per share) $ 20.19          
Series B Preferred Stock [Member] | Subsequent Event [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 [Member]            
Class of Stock [Line Items]            
Percent of conversion price       110.00%