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Earnings Per Share | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share Reconciliation [Abstract] |
Earnings Per Share | Earnings Per Share The following table presents a reconciliation of the numerators and denominators of the basic and diluted earnings per share calculations:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Income (Numerator) |  | Weighted Shares (Denominator) |  | Per-Share Amount |  | Income (Numerator) |  | Weighted Shares (Denominator) |  | Per-Share Amount |  | Income (Numerator) |  | Weighted Shares (Denominator) |  | Per-Share Amount
| (Amounts and numbers in thousands, except per-share data)
Basic EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income available to common stockholders | $ | 144,877 |  |  | 55,316 |  |  | $ | 2.62 |  |  | $ | 73,044 |  |  | 55,249 |  |  | $ | 1.32 |  |  | $ | 74,479 |  |  | 55,157 |  |  | $ | 1.35 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options | — |  |  | 11 |  |  |  |  | — |  |  | 11 |  |  |  |  | — |  |  | 15 |  |  |
RSUs | — |  |  | — |  |  |  |  | — |  |  | 42 |  |  |  |  | — |  |  | 37 |  |  |
Diluted EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income available to common stockholders after assumed conversions | $ | 144,877 |  |  | 55,327 |  |  | $ | 2.62 |  |  | $ | 73,044 |  |  | 55,302 |  |  | $ | 1.32 |  |  | $ | 74,479 |  |  | 55,209 |  |  | $ | 1.35 |
Potentially dilutive securities representing approximately 0, 27,600, and 67,000 shares of common stock for 2017, 2016, and 2015, respectively, were excluded from the computation of diluted earnings per common share because their effect would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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