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Income (Loss) Per Share (Details 1) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Net income (loss) allocated to common stockholders is not adjusted for: |  |  |
Total | $ 7,200 | $ 4,124 | $ 1,739
Weighted average diluted shares are not adjusted for: |  |  |
Antidilutive securities excluded (in shares) | 6,141 | 3,804 | 8,654
Restricted Stock [Member] |  |  |
Net income (loss) allocated to common stockholders is not adjusted for: |  |  |
Income (loss) allocated to unvested restricted shares | $ 267 | $ 115 | $ 41
Weighted average diluted shares are not adjusted for: |  |  |
Antidilutive securities excluded (in shares) | 77 | 87 | 51
Performance Shares [Member] |  |  |
Net income (loss) allocated to common stockholders is not adjusted for: |  |  |
Income (loss) allocated to unvested restricted shares | $ 138 | $ 149 | $ 105
Weighted average diluted shares are not adjusted for: |  |  |
Antidilutive securities excluded (in shares) | 0 | 55 | 52
Operating Partnership Units [Member] |  |  |
Net income (loss) allocated to common stockholders is not adjusted for: |  |  |
Income (loss) attributable to redeemable noncontrolling interests in operating partnership | $ 0 | $ 0 | $ (393)
Weighted average diluted shares are not adjusted for: |  |  |
Antidilutive securities excluded (in shares) | 0 | 0 | 6,642
Preferred Stock [Member] |  |  |
Net income (loss) allocated to common stockholders is not adjusted for: |  |  |
Dividends on preferred stock | $ 6,795 | $ 3,860 | $ 1,986
Weighted average diluted shares are not adjusted for: |  |  |
Antidilutive securities excluded (in shares) | 6,064 | 3,662 | 1,909

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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