Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity, Dividends (Details)

v3.6.0.2
Stockholders' Equity, Dividends (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2015
Mar. 31, 2015
Sep. 30, 2014
Jun. 30, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dividends, Common Stock                
Common Stock, Dividends, Per Share, Cash Paid         $ 0.60 $ 0.55 $ 0.53  
Payments of Ordinary Dividends, Noncontrolling Interest         $ 401 $ 415 $ 1,134  
Dividends, Preferred Stock                
Shares issued for payment of preferred stock dividends           1,000 3,000  
Preferred stock, shares outstanding         0 0    
Common Stock                
Dividends, Common Stock                
Common Stock, Dividends, Per Share, Cash Paid $ 0.15 $ 0.10 $ 0.10 $ 0.06 $ 0.60 $ 0.55 $ 0.53  
Payments of Ordinary Dividends, Noncontrolling Interest         $ 401 $ 415 $ 1,134  
Common Stock | Dividend Paid - Special, Non-Recurring Dividend                
Dividends, Common Stock                
Common Stock, Dividends, Per Share, Cash Paid             $ 0.21  
Convertible Preferred Stock                
Dividends, Preferred Stock                
Shares issued for payment of preferred stock dividends         0 771    
Preferred Stock, Dividend Rate, Percentage         8.50%      
Preferred stock, shares outstanding         0 0   68,180