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Earnings Per Share (Schedule of Diluted Shares) (Details) - USD ($) shares in Thousands, $ 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 | Dec. 31, 2017
Schedule of Diluted shares |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | $ 1,051 | $ (3,858) | $ (871) | $ 830 | $ 10,504 | $ 78,626 | $ 887 | $ 8,711 | $ (2,848) | $ 98,728 | $ 10,272
Income (loss) from continuing operations attributable to unvested shares |  |  |  |  |  |  |  |  | 21 | (1,231) | (62)
Numerator for basic |  |  |  |  |  |  |  |  | (2,827) | 97,497 | 10,210
Loss from continuing operations attributable to unvested shares |  |  |  |  |  |  |  |  | (21) |  |
Numerator for dilutive |  |  |  |  |  |  |  |  | (2,848) | 97,497 | 10,210
Income (loss) from discontinued operations, net of tax | (37) | (61) | (162) | 5,671 | (80) | (21) | (343) | (52) | 5,411 | (496) | (621)
Income (loss) from discontinued operations attributable to unvested shares |  |  |  |  |  |  |  |  | (39) | 6 | 4
Numerator for basic |  |  |  |  |  |  |  |  | 5,372 | (490) | (617)
Income from discontinued operations attributable to unvested shares |  |  |  |  |  |  |  |  | (39) |  |
Numerator for dilutive |  |  |  |  |  |  |  |  | 5,411 | (490) | (617)
Net income | $ 1,014 | $ (3,919) | $ (1,033) | $ 6,501 | $ 10,424 | $ 78,605 | $ 544 | $ 8,659 | 2,563 | 98,232 | 9,651
Net income attributable to unvested shares |  |  |  |  |  |  |  |  | (18) | (1,225) | (58)
Numerator for basic |  |  |  |  |  |  |  |  | 2,545 | 97,007 | 9,593
Net income attributable to unvested shares |  |  |  |  |  |  |  |  | (18) |  |
Numerator for dilutive |  |  |  |  |  |  |  |  | $ 2,563 | $ 97,007 | $ 9,593
Basic weighted average shares outstanding |  |  |  |  |  |  |  |  | 59,143 | 59,248 | 58,717
Effect of dilutive securities |  |  |  |  |  |  |  |  |  | 749 | 3
Diluted weighted average shares outstanding |  |  |  |  |  |  |  |  | 59,143 | 59,997 | 58,720
Stock options and unvested restricted stock grants excluded from dilutive calculation because they would be anti-dilutive |  |  |  |  |  |  |  |  | 603 | 1,316 | 2,823

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1448-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration