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Equity - Schedule of Shares Issued (Details) - USD ($) $ / shares in Units, $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Performance Shares [Member] |  |
Class of Stock [Line Items] |  |
Shares vested measurement period (in years) | 3 years |
Performance Shares [Member] | Index Performance Shares - 1Q [Member] |  |
Class of Stock [Line Items] |  |
Shares granted (in shares) | 106,706 | 404,466
Grant date fair value per share (in dollars per share) | $ 6.82 | $ 4.53
Performance Shares [Member] | Peer Performance Shares - 1Q [Member] |  |
Class of Stock [Line Items] |  |
Shares granted (in shares) | 106,705 | 404,463
Grant date fair value per share (in dollars per share) | $ 6.34 | $ 4.58
Performance Shares [Member] | Index Performance Shares - 2Q [Member] |  |
Class of Stock [Line Items] |  |
Shares granted (in shares) | 163,466 | 0
Grant date fair value per share (in dollars per share) | $ 4.05 | $ 0.00
Performance Shares [Member] | Peer Performance Shares - 2Q [Member] |  |
Class of Stock [Line Items] |  |
Shares granted (in shares) | 163,463 | 0
Grant date fair value per share (in dollars per share) | $ 4.27 | $ 0.00
Restricted Stock [Member] |  |
Class of Stock [Line Items] |  |
Shares granted (in shares) | 237,560 | 225,090
Grant date fair value | $ 2,551 | $ 1,724
Award requisite service period (in years) | 3 years |

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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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