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Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2011
Benefit Plans [Abstract] |
Plan Assets And Benefit Obligation Activity |
(In thousands) |  | 2011 |  |  | 2010 |
Change in fair value of plan assets |  |  |  |  |  |  |  |
Fair value at beginning of measurement period |  | $ | 85,464 |  |  | $ | 75,815 |
Actual return on plan assets |  |  | 1,813 |  |  |  | 11,296 |
Company contributions |  |  | 14,000 |  |  |  | 2,000 |
Benefits paid |  |  | (4,696 | ) |  |  | (3,647 | )
Fair value at end of measurement period |  | $ | 96,581 |  |  | $ | 85,464 |
Change in benefit obligation |  |  |  |  |  |  |  |
Projected benefit obligation at beginning of measurement period |  | $ | 74,164 |  |  | $ | 60,342 |
Service cost |  |  | 4,557 |  |  |  | 3,671 |
Interest cost |  |  | 3,967 |  |  |  | 3,583 |
Actuarial loss |  |  | 3,515 |  |  |  | 10,215 |
Benefits paid |  |  | (4,696 | ) |  |  | (3,647 | )
Projected benefit obligation at the end of measurement period |  | $ | 81,507 |  |  | $ | 74,164 |
Funded status at end of year (assets less benefit obligation) |  | $ | 15,074 |  |  | $ | 11,300 |
Asset Allocation For The Pension Plan By Asset Category |
|  |  |  |  | Percentage of Plan Assets |
Asset category |  | Target Allocation |  |  | 2011 |  |  | 2010 |
Equity securities |  |  | 50% - 100% |  |  |  | 80 | % |  |  | 86 | %
Fixed income and cash equivalents |  |  | remaining balance |  |  |  | 20 | % |  |  | 14 | %
Total |  |  |  |  |  |  | 100 | % |  |  | 100 | %
Weighted Average Assumptions Used To Determine Benefit Obligations |
|  | 2011 |  |  | 2010 |
Discount rate |  |  | 5.18 | % |  |  | 5.50 | %
Rate of compensation increase |  |  | 3.00 | % |  |  | 3.00 | %
Estimated Future Pension Benefit Payments |
2012 |  | $ | 5,535 |
2013 |  |  | 4,999 |
2014 |  |  | 5,543 |
2015 |  |  | 6,259 |
2016 |  |  | 6,284 |
2017-2021 |  |  | 37,823 |
Total |  | $ | 66,443 |
Balances Of Accumulated Other Comprehensive Income (Loss) |
(In thousands) |  | 2011 |  |  | 2010 |
Prior service cost |  | $ | (74 | ) |  | $ | (93 | )
Net actuarial loss |  |  | (32,163 | ) |  |  | (24,410 | )
Total |  |  | (32,237 | ) |  |  | (24,503 | )
Deferred taxes |  |  | 11,283 |  |  |  | 8,576 |
Accumulated other comprehensive loss |  | $ | (20,954 | ) |  | $ | (15,927 | )
Components Of Net Periodic Benefit Cost And Other Amounts Recognized In Other Comprehensive Income (Loss) |
(In thousands) |  | 2011 |  |  | 2010 |  |  | 2009 |
Components of net periodic benefit cost and other amounts recognized in other comprehensive income (Loss) |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | (4,557 | ) |  | $ | (3,671 | ) |  | $ | (3,813 | )
Interest cost |  |  | (3,967 | ) |  |  | (3,583 | ) |  |  | (3,432 | )
Expected return on plan assets |  |  | 7,543 |  |  |  | 5,867 |  |  |  | 4,487 |
Amortization of prior service cost |  |  | (19 | ) |  |  | (22 | ) |  |  | (34 | )
Recognized net actuarial loss |  |  | (1,411 | ) |  |  | (1,079 | ) |  |  | (2,041 | )
Net periodic benefit cost |  | $ | (2,411 | ) |  | $ | (2,488 | ) |  | $ | (4,833 | )
Change to net actuarial (loss)/gain for the period |  | $ | (9,164 | ) |  | $ | (4,835 | ) |  | $ | 7,591 |
Amortization of prior service cost |  |  | 19 |  |  |  | 22 |  |  |  | 34 |
Amortization of net loss |  |  | 1,411 |  |  |  | 1,079 |  |  |  | 2,041 |
Total recognized in other comprehensive (loss)/income |  |  | (7,734 | ) |  |  | (3,734 | ) |  |  | 9,666 |
Total recognized in net benefit cost and other comprehensive (loss)/income |  | $ | (10,145 | ) |  | $ | (6,222 | ) |  | $ | 4,833 |
Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost |
|  | 2011 |  |  | 2010 |
Discount Rate |  |  | 5.50 | % |  |  | 6.00 | %
Rate of compensation increase |  |  | 3.00 | % |  |  | 3.00 | %
Expected long-term return on plan assets |  |  | 7.75 | % |  |  | 7.75 | %

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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (d)(5) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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