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Earnings Per Common Share | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Earnings Per Common Share | 3. Earnings Per Common Share Basic earnings per common share are calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per common share adjust basic earnings per common share for the effects of potentially dilutive common shares. Potentially dilutive common shares include the dilutive effects of shares issuable under our equity compensation plans, including stock options and restricted stock, each using the treasury stock method.
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Numerator — basic and diluted |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 85,520 |  |  | $ | 66,053 |  |  | $ | 58,807 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding — basic |  |  | 40,943 |  |  |  | 40,846 |  |  |  | 39,726 |
Effect of dilutive stock options |  |  | 281 |  |  |  | 388 |  |  |  | 375 |
Effect of dilutive restricted shares |  |  | 485 |  |  |  | 495 |  |  |  | 628 |
Weighted average number of common shares outstanding — diluted |  |  | 41,709 |  |  |  | 41,729 |  |  |  | 40,729 |
Earnings per common share — basic |  | $ | 2.09 |  |  | $ | 1.62 |  |  | $ | 1.48 |
Earnings per common share — diluted |  | $ | 2.05 |  |  | $ | 1.58 |  |  | $ | 1.44 |
Antidilutive stock options and restricted shares |  |  | 1,404 |  |  |  | 1,734 |  |  |  | 2,967 |

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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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