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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Computation of Earnings Per Common Share |
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﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Three Months Ended |  | Six Months Ended
﻿ |  | June 30, |  | June 30,
﻿(in thousands, except per share data) |  | 2018 |  | 2017 |  | 2018 |  | 2017
﻿Numerator: |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income to common shareholders |  | $ | 71,177 |  | $ | 52,267 |  | $ | 143,652 |  | $ | 101,281
﻿Net income allocated to participating securities - basic and diluted |  |  | 1,328 |  |  | 1,166 |  |  | 2,694 |  |  | 2,322
﻿Net income allocated to common shareholders - basic and diluted |  | $ | 69,849 |  | $ | 51,101 |  | $ | 140,958 |  | $ | 98,959
﻿Denominator: |  |  |  |  |  |  |  |  |  |  |  |
﻿Weighted-average common shares - basic |  | $ | 85,305 |  | $ | 84,614 |  | $ | 85,273 |  | $ | 84,489
﻿Dilutive potential common shares |  |  | 178 |  |  | 253 |  |  | 178 |  |  | 266
﻿Weighted-average common shares - diluted |  | $ | 85,483 |  | $ | 84,867 |  | $ | 85,451 |  | $ | 84,755
﻿Earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
﻿Basic |  | $ | 0.82 |  | $ | 0.60 |  | $ | 1.65 |  | $ | 1.17
﻿Diluted |  | $ | 0.82 |  | $ | 0.60 |  | $ | 1.65 |  | $ | 1.17
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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