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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Earnings (Loss) Per Share, Basic and Diluted [Abstract] |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders | $ 3,390 | $ 3,924 | $ 807 | $ 3,551 | $ 7,416 | $ 3,737 | $ 4,630 | $ 3,559 | $ 11,672 | $ 19,342
Average common shares outstanding (shares) |  |  |  |  |  |  |  |  | 15,594,883 | 17,434,780
Less: |  |  |  |  |  |  |  |  |  |
Unvested restricted stock shares (shares) |  |  |  |  |  |  |  |  | 0 | (435)
Weighted average common shares outstanding (shares) |  |  |  |  |  |  |  |  | 15,594,883 | 17,434,345
Basic earnings (loss) per common share (usd per share) | $ 0.22 | $ 0.26 | $ 0.05 | $ 0.22 |  | $ 0.22 | $ 0.26 | $ 0.20 | $ 0.75 | $ 1.11

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