Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Capital Stock (Details)

v3.3.0.814
Shareholders' Equity - Capital Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
May. 02, 2015
Sep. 30, 2015
Sep. 30, 2015
May. 31, 2015
Dec. 31, 2014
Class of Stock [Line Items]          
Preferred stock, shares authorized   25,000,000 25,000,000   25,000,000
Series A Preferred Stock          
Class of Stock [Line Items]          
Preferred stock, shares authorized   17,290,000 17,290,000   14,290,000
At the market shares sold 53,233 152,134 3,514,146    
Proceeds from Issuance of public offering   $ 3,752 $ 84,634    
Offering expenses $ 25 175 1,907    
Proceeds from at market preferred stock $ 1,264        
Dividends paid   $ 7,289 $ 20,773    
Dividends paid per share on monthly basis     $ 0.1667    
Series A Preferred Stock | Amendment Company's Articles of Incorporation [Member]          
Class of Stock [Line Items]          
Preferred stock, shares authorized       3,000,000