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Loss per Common Share - Textual (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Accretion on Convertible Preferred Shares | $ (8,355) | $ 6,352 | $ 0
Income (Loss) from Continuing Operations, Per Basic Share | $ (2.31) | $ 3.72 | $ (0.89)
Net Income Allocated to Convertible Shares | $ 0 |  | $ 0
Antidilutive securities excluded from computation of earnings per share, amount | 1,442,518 | 0 | 1,391,456
Contingent Restricted Stock Units (RSUs) [Member] |  |  |
Antidilutive securities excluded from computation of earnings per share, amount | 1,012,637 | 1,443,921 | 503,321
Convertible Preference Shares | Series 4 Convertible Preferred Stock [Member] |  |  |
Accretion on Convertible Preferred Shares |  | $ (6,352) |
Shares, Outstanding | 95,000,000 | 95,000,000 |
Convertible Preferred Stock, Shares Issued upon Conversion | 10,970,714 | 10,135,244 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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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