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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Weighted-Average Shares of Common Stock Outstanding used in Calculation of Basic and Diluted Earnings Per Share |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | For the year ended December 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿Numerator: |  |  |  |  |  |  |  |  |
﻿Net income |  | $ | 47,451 |  | $ | 103,654 |  | $ | 76,238
﻿Denominator: |  |  |  |  |  |  |  |  |
﻿Basic weighted-average shares outstanding |  |  | 114,909 |  |  | 119,860 |  |  | 124,448
﻿Dilutive impact of stock options and restricted shares |  |  | 1,606 |  |  | 1,162 |  |  | 696
﻿Diluted weighted-average shares outstanding |  |  | 116,515 |  |  | 121,022 |  |  | 125,144
﻿Net income per common share: |  |  |  |  |  |  |  |  |
﻿Basic |  | $ | 0.41 |  | $ | 0.86 |  | $ | 0.61
﻿Diluted |  | $ | 0.41 |  | $ | 0.86 |  | $ | 0.61
﻿

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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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