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Share Based Compensation, 401(k) Plan and Deferred Compensation (Tables) | 12 Months Ended
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Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Option activity |
| Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value
Outstanding at January 1, 2011 | 3,116,611 |  |  | $ | 14.56 |  |  | 7.81 |  |  | $ | (9,080,625 | )
Granted | 603,241 |  |  | 11.89 |  |  | 9.18 |  |  | (1,441,746 | )
Exercised | (120,180 | ) |  | 2.91 |  |  |  |  |
Outstanding at December 31, 2011 | 3,599,672 |  |  | $ | 14.50 |  |  | 7.20 |  |  | $ | (18,015,060 | )
Vested/Exercisable at December 31, 2011 | 2,287,729 |  |  | $ | 17.01 |  |  | 6.59 |  |  | $ | (16,912,225 | )
| Years ended December 31,
| 2010 |  | 2009
| Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (in Years) |  | Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (in Years)
Outstanding at beginning of year | 2,404,567 |  |  | $ | 15.48 |  |  | 8.38 |  |  | 1,754,648 |  |  | $ | 20.41 |  |  | 8.77 |
Granted | 724,805 |  |  | 11.31 |  |  | 9.18 |  |  | 676,491 |  |  | 2.91 |  |  | 9.25 |
Forfeited/Expired | (12,761 | ) |  | 2.91 |  |  | — |  |  | (26,572 | ) |  | 20.61 |  |  | — |
Outstanding at end of year | 3,116,611 |  |  | $ | 14.56 |  |  | 7.81 |  |  | 2,404,567 |  |  | $ | 15.48 |  |  | 8.38 |
Vested/Exercisable at end of year | 1,384,728 |  |  | $ | 17.63 |  |  | 7.14 |  |  | 616,119 |  |  | $ | 20.03 |  |  | 7.54 |
Schedule of share-based payment award, stock options, valuation assumptions |
Grant Date |  | March 2, 2011 |  | March 4, 2010 |
Risk-free interest rate |  | 2.86% |  | 3.03% |
Dividend yield |  | 5.01% |  | 6.53% |
Volatility factor |  | 48.02% |  | 46.89% |
Weighted-average expected life |  | 7 | yrs | 7 | yrs
Company's restricted share activity |
| Shares |  | Weighted Average Grant Date Fair value
Non-vested at January 1, 2011 | 851,278 |  |  | $ | 10.75 |
Granted | 197,035 |  |  | 11.92 |
Vested | (237,541 | ) |  | 19.76 |
Forfeited | (3,481 | ) |  | 11.47 |
Non-vested at December 31, 2011 | 807,291 |  |  | $ | 9.46 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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