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Earnings per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Earnings Per Share [Abstract] |  |  |  |
Net income attributable to continuing operations | $ 29,306 | $ 23,722 | $ 41,989 | $ 33,038
Preferred stock dividends | (9) | (10) | (19) | (20)
Income from continuing operations available to common equity | 29,297 | 23,712 | 41,970 | 33,018
Dividends and undistributed earnings allocated to participating securities | (48) | (68) | (67) | (96)
Income from continuing operations available to common shareholders | 29,249 | 23,644 | 41,903 | 32,922
Net income attributable to discontinued operations | 1,777 | 576 | 845 | 942
Preferred stock dividends | (1) | 0 | (1) | 0
Income from discontinued operations available to common equity | 1,776 | 576 | 844 | 942
Dividends and undistributed earnings allocated to participating securities | (3) | (2) | (2) | (3)
Income from discontinued operations available to common shareholders | $ 1,773 | $ 574 | $ 842 | $ 939
Basic weighted-average shares outstanding (shares) | 37,411 | 37,351 | 37,368 | 37,323
Stock options and other stock compensation (shares) | 449 | 475 | 439 | 484
Diluted weighted-average shares outstanding (shares) | 37,860 | 37,826 | 37,807 | 37,807
Antidilutive stock options (shares) | 143 | 492 | 143 | 492
Earnings per share attributable to continuing operations: |  |  |  |
Earnings per share attributable to continuing operations, basic (dollars per share) | $ 0.78 | $ 0.63 | $ 1.12 | $ 0.88
Earnings per share attributable to continuing operations, diluted (dollars per share) | 0.77 | 0.62 | 1.11 | 0.87
Earnings per share attributable to discontinued operations: |  |  |  |
Earnings per share attributable to discontinued operations, basic (dollars per share) | 0.05 | 0.02 | 0.02 | 0.03
Earnings per share attributable to discontinued operations, diluted (dollars per share) | $ 0.05 | $ 0.01 | $ 0.02 | $ 0.03

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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 -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: 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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