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Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2012
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] |
Schedule of plan assets and benefit obligation activity | Using an accrual measurement date of December 31, 2012 and 2011, plan assets and benefit obligation activity for the Pension Plan are listed below:
(In thousands) |  | 2012 |  | 2011
Change in fair value of plan assets |  |  |  |
Fair value at beginning of measurement period |  | $ | 96,581 |  |  | $ | 85,464 |
Actual return on plan assets |  | 11,256 |  |  | 1,813 |
Company contributions |  | 15,900 |  |  | 14,000 |
Benefits paid |  | (5,969 | ) |  | (4,696 | )
Fair value at end of measurement period |  | $ | 117,768 |  |  | $ | 96,581 |
Change in benefit obligation |  |  |  |
Projected benefit obligation at beginning of measurement period |  | $ | 81,507 |  |  | $ | 74,164 |
Service cost |  | 4,271 |  |  | 4,557 |
Interest cost |  | 4,048 |  |  | 3,967 |
Actuarial loss |  | 13,796 |  |  | 3,515 |
Benefits paid |  | (5,969 | ) |  | (4,696 | )
Projected benefit obligation at the end of measurement period |  | $ | 97,653 |  |  | $ | 81,507 |
Funded status at end of year (fair value of plan assets less benefit obligation) |  | $ | 20,115 |  |  | $ | 15,074 |
Schedule of allocation of plan assets | The asset allocation for the Pension Plan as of each measurement date, by asset category, was as follows:
|  |  |  | Percentage of Plan Assets
Asset category |  | Target Allocation |  | 2012 |  | 2011
Equity securities |  | 50% - 100% |  | 83 | % |  | 80 | %
Fixed income and cash equivalents |  | remaining balance |  | 17 | % |  | 20 | %
Total |  |  |  | 100 | % |  | 100 | %
Schedule of assumptions used to determine benefit obligations | The weighted average assumptions used to determine benefit obligations at December 31, 2012, 2011 and 2010 were as follows:
|  | 2012 |  | 2011 |  | 2010
Discount rate |  | 4.47 | % |  | 5.18 | % |  | 5.50 | %
Rate of compensation increase |  | 3.00 | % |  | 3.00 | % |  | 3.00 | %
Schedule of estimated future pension benefit Payments | The estimated future pension benefit payments reflecting expected future service for the next ten years are shown below (in thousands):
2013 | $ | 6,431 |
2014 | 6,163 |
2015 | 6,623 |
2016 | 6,619 |
2017 | 7,233 |
2018-2022 | 41,653 |
Total | $ | 74,722 |
Schedule of balances of accumulated other comprehensive income loss | The following table shows ending balances of accumulated other comprehensive loss at December 31, 2012 and 2011.
(In thousands) |  | 2012 |  | 2011
Prior service cost |  | $ | (54 | ) |  | $ | (74 | )
Net actuarial loss |  | (41,691 | ) |  | (32,163 | )
Total |  | (41,745 | ) |  | (32,237 | )
Deferred taxes |  | 14,611 |  |  | 11,283 |
Accumulated other comprehensive loss |  | $ | (27,134 | ) |  | $ | (20,954 | )
Schedule of components of net periodic benefit cost and other amounts recognized in other comprehensive income (loss) | Using an actuarial measurement date of December 31 for 2012, 2011 and 2010, components of net periodic benefit cost and other amounts recognized in other comprehensive loss were as follows:
(In thousands) |  | 2012 |  | 2011 |  | 2010
Components of net periodic benefit cost and other amounts recognized in other comprehensive (Loss) |  |  |  |  |  |
Service cost |  | $ | (4,271 | ) |  | $ | (4,557 | ) |  | $ | (3,671 | )
Interest cost |  | (4,048 | ) |  | (3,967 | ) |  | (3,583 | )
Expected return on plan assets |  | 8,742 |  |  | 7,543 |  |  | 5,867 |
Amortization of prior service cost |  | (20 | ) |  | (19 | ) |  | (22 | )
Recognized net actuarial loss |  | (1,708 | ) |  | (1,411 | ) |  | (1,079 | )
Net periodic benefit cost |  | $ | (1,305 | ) |  | $ | (2,411 | ) |  | $ | (2,488 | )
Change to net actuarial (loss)/gain for the period |  | $ | (11,236 | ) |  | $ | (9,164 | ) |  | $ | (4,835 | )
Amortization of prior service cost |  | 20 |  |  | 19 |  |  | 22 |
Amortization of net loss |  | 1,708 |  |  | 1,411 |  |  | 1,079 |
Total recognized in other comprehensive (loss)/income |  | (9,508 | ) |  | (7,734 | ) |  | (3,734 | )
Total recognized in net benefit cost and other comprehensive (loss)/income |  | $ | (10,813 | ) |  | $ | (10,145 | ) |  | $ | (6,222 | )
Schedule of assumptions used to determine costs | The weighted average assumptions used to determine net periodic benefit cost for the years ended December 31, 2012, 2011 and 2010 are listed below:
|  | 2012 |  | 2011 |  | 2010
Discount Rate |  | 5.18 | % |  | 5.50 | % |  | 6.00 | %
Rate of compensation increase |  | 3.00 | % |  | 3.00 | % |  | 3.00 | %
Expected long-term return on plan assets |  | 7.75 | % |  | 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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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