Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Dividend Reinvestment and Direct Stock Purchase Plan (Details)

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Stockholders' Equity Dividend Reinvestment and Direct Stock Purchase Plan (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Class of Stock [Line Items]        
Common Stock, Capital Shares Reserved for Future Issuance 7,500,000   7,500,000  
Stock Issued During Period, Shares, Dividend Reinvestment Plan 249,650   249,650  
Stock Issued and Outstanding, Value, Dividend Reinvestment Plan $ 2,647   $ 2,647  
Stock Issued During Period, Shares, Dividend Reinvestment Plan 16,772 12,694 36,184 23,474
Stock Issued During Period, Value, Dividend Reinvestment Plan $ 178 $ 131 $ 379 $ 241