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Earnings Per Share - Computation of Basic and Diluted Earnings Per Share for Continuing Operations (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Numerator: |  |  |  |
Income from continuing operations | $ 8,613 | $ 21,479 | $ 58,829 | $ 58,341
Basic |  |  |  |
Weighted average common shares outstanding (in shares) | 52,874,000 | 54,142,000 | 53,119,000 | 54,356,000
Diluted |  |  |  |
Stock options (in shares) | 676,000 | 760,000 | 733,000 | 869,000
Restricted stock awards (in shares) | 182,000 | 146,000 | 220,000 | 222,000
Contingent shares (in shares) | 37,000 | 68,000 | 37,000 | 68,000
Diluted weighted average common shares outstanding (in shares) | 53,769,000 | 55,116,000 | 54,109,000 | 55,515,000
Basic earnings per share from continuing operations (in dollars per share) | $ 0.16 | $ 0.40 | $ 1.11 | $ 1.07
Diluted earnings per share from continuing operations (in dollars per share) | $ 0.16 | $ 0.39 | $ 1.09 | $ 1.05
Share-based payment arrangement (in shares) |  |  |  |
Dilutive Securities Included And Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Share based awards excluded from the calculation of diluted earnings per share (in shares) | 0 | 400,000 | 5,000 | 400,000
Performance shares (in shares) |  |  |  |
Dilutive Securities Included And Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |
Share based awards excluded from the calculation of diluted earnings per share (in shares) | 447,000 | 324,000 | 447,000 | 324,000

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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/disclosureRef -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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- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4613673-111683 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.13) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794 + Details
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