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Stockholders' Equity (Table) | 12 Months Ended
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Dec. 31, 2012
Stockholders' Equity [Abstract] |
Cumulative convertible preferred stock | Reconciliation of Basic and Diluted Per Share Data
|  | Earnings (Numerator) |  |  | Shares (Denominator) |  |  | Per Share Data |
Three Months Ended January 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations |  | $ | 15,534 |  |  |  |  |  |  |  |  |
Allocation of earnings to nonvested restricted stock |  |  | (169 | ) |  |  |  |  |  |  |  |
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations available to common shareholders |  | $ | 15,365 |  |  |  | 84,394 |  |  | $ | .18 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Stock options assumed exercised |  |  |  |  |  |  | 536 |  |  |  |  |
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations available to common shareholders plus stock options assumed exercised |  | $ | 15,365 |  |  |  | 84,930 |  |  | $ | .18 |
|  | Earnings (Numerator) |  |  | Shares (Denominator) |  |  | Per Share Data |
Three Months Ended January 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations |  | $ | 8,858 |  |  |  |  |  |  |  |  |
Allocation of earnings to nonvested restricted stock |  |  | (80 | ) |  |  |  |  |  |  |  |
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations available to common shareholders |  | $ | 8,778 |  |  |  | 87,037 |  |  | $ | .10 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Stock options assumed exercised |  |  |  |  |  |  | 312 |  |  |  |  |
Diluted earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations available to common shareholders plus stock options assumed exercised |  | $ | 8,778 |  |  |  | 87,349 |  |  | $ | .10 |
Activity relating to common shares |
|  | Issued Shares |  |  | Treasury Shares |  |  | Shares Held in Trust |  |  | Outstanding Shares |
Balance, as of December 31, 2009 |  |  | 40,215 |  |  |  | (1,809 | ) |  |  | (631 | ) |  |  | 37,775 |
Preferred stock conversion |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | 1 |
Options exercised |  |  | 1,995 |  |  |  | (1,314 | ) |  |  | 631 |  |  |  | 1,312 |
Shares cancelled |  |  | (2,104 | ) |  |  | 2,104 |  |  |  | — |  |  |  | — |
Restricted stock grant |  |  | 300 |  |  |  | — |  |  |  | — |  |  |  | 300 |
Balance, as of December 31, 2010 |  |  | 40,407 |  |  |  | (1,019 | ) |  |  | — |  |  |  | 39,388 |
Options exercised |  |  | 160 |  |  |  | (70 | ) |  |  | — |  |  |  | 90 |
Shares cancelled |  |  | (70 | ) |  |  | 70 |  |  |  | — |  |  |  | — |
Restricted stock grant |  |  | 600 |  |  |  | — |  |  |  | — |  |  |  | 600 |
Other adjustments |  |  | 3 |  |  |  | 1 |  |  |  | — |  |  |  | 4 |
Balance, as of December 31, 2011 |  |  | 41,100 |  |  |  | (1,018 | ) |  |  | — |  |  |  | 40,082 |
Options exercised |  |  | 285 |  |  |  | (146 | ) |  |  | — |  |  |  | 139 |
Shares cancelled |  |  | (146 | ) |  |  | 146 |  |  |  | — |  |  |  | — |
Restricted stock grant |  |  | 650 |  |  |  | — |  |  |  | — |  |  |  | 650 |
Balance, as of December 31, 2012 |  |  | 41,889 |  |  |  | (1,018 | ) |  |  | — |  |  |  | 40,871 |
Summary of dividends declared on its outstanding shares of common stock to its shareholders |
|  | For the year ended December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | Per Share Amount |  |  | Aggregate Amount |  |  | Per Share Amount |  |  | Aggregate Amount |  |  | Per Share Amount |  |  | Aggregate Amount |
First Quarter |  | $ | 0.10 |  |  | $ | 4,012 |  |  | $ | 0.10 |  |  | $ | 3,939 |  |  | $ | 0.12 |  |  | $ | 4,700 |
Second Quarter |  | $ | 0.08 |  |  | $ | 3,214 |  |  | $ | — |  |  | $ | — |  |  | $ | 0.10 |  |  | $ | 3,917 |
Third Quarter |  | $ | 0.08 |  |  | $ | 3,270 |  |  | $ | 0.08 |  |  | $ | 3,199 |  |  | $ | — |  |  | $ | — |
Fourth Quarter |  | $ | 0.20 |  |  | $ | 8,174 |  |  | $ | 0.14 |  |  | $ | 5,611 |  |  | $ | 0.10 |  |  | $ | 3,917 |

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- Definition Tabular disclosure of information related to converting stock into another financial instrument(s) in a noncash (or part noncash) transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -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. + Details
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