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
Mar. 31, 2017
Mar. 31, 2016
Class of Stock [Line Items]    
Common Stock, Capital Shares Reserved for Future Issuance 7,500,000  
Stock Issued and Outstanding, Shares, Dividend Reinvestment Plan 355,159  
Stock Issued and Outstanding, Value, Dividend Reinvestment Plan $ 3,563  
Stock Issued During Period, Shares, Dividend Reinvestment Plan 11,265 14,648
Stock Issued During Period, Value, Dividend Reinvestment Plan $ 102 $ 110