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, 2019
Mar. 31, 2018
Equity [Abstract]    
Number of common shares reserved for issuance under dividend reinvestment plan (in shares) 3,750,000  
Number of common shares issued from dividend reinvestment plan and outstanding as of period-end (in shares) 240,082  
Accumulated proceeds from issuance of common shares from dividend reinvestment plan $ 4,600  
Number of common shares issued during period from dividend reinvestment plan (in shares) 12,230 4,921
Proceeds from issuance of common shares during period from dividend reinvestment plan $ 200 $ 100