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Earnings Per Share | 12 Months Ended
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Dec. 31, 2012
Earnings Per Share | 3. EARNINGS PER SHARE Basic earnings per share are computed by dividing income available for common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share are computed by dividing income available for common stockholders by the weighted average number of shares of common stock outstanding during the period adjusted for the exercise and/or conversion of all potentially dilutive securities, such as convertible debt and share-based compensation. The calculations of both basic and diluted earnings per share are presented in the following table.
For the Years Ended December 31, |  | 2012 |  |  | 2011 |  |  | 2010 |
(in thousands, except shares and per share data) |  |  |  |  |  |  |  |  |
Calculation of Basic Earnings Per Share: |  |  |  |  |  |  |  |  |  |  |  |
Net Income |  | $ | 28,863 |  |  | $ | 27,622 |  |  | $ | 26,056 |
Weighted average shares outstanding |  |  | 9,586,144 |  |  |  | 9,555,799 |  |  |  | 9,474,554 |
Basic Earnings Per Share |  | $ | 3.01 |  |  | $ | 2.89 |  |  | $ | 2.75 |
Calculation of Diluted Earnings Per Share: |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net Income |  | $ | 28,863 |  |  | $ | 27,622 |  |  | $ | 26,056 |
Effect of 8.25% Convertible debentures |  |  | 53 |  |  |  | 61 |  |  |  | 73 |
Adjusted numerator — Diluted |  | $ | 28,916 |  |  | $ | 27,683 |  |  | $ | 26,129 |
Reconciliation of Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted shares outstanding — Basic |  |  | 9,586,144 |  |  |  | 9,555,799 |  |  |  | 9,474,554 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation |  |  | 23,499 |  |  |  | 23,792 |  |  |  | 22,550 |
8.25% Convertible debentures |  |  | 61,864 |  |  |  | 71,467 |  |  |  | 85,270 |
Adjusted denominator — Diluted |  |  | 9,671,507 |  |  |  | 9,651,058 |  |  |  | 9,582,374 |
Diluted Earnings Per Share |  | $ | 2.99 |  |  | $ | 2.87 |  |  | $ | 2.73 |

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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 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: 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=16381557&loc=d3e4984-109258 Reference 3: 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 4: 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=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: 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=6880815&loc=d3e20235-122688 + Details
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