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Pension Plans and Other Postretirement Benefits (Details Textual) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2006
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Reduction in expense due to changes in the plan for other postretirement benefits | $ 144 | $ 431 | $ 379 |
Pension Plans and Other Postretirement Benefits (Additional Textual) [Abstract] |  |  |  |
Employer contribution as percentage of eligible compensation for hired on or after April 1, 1997 | 5.00% |  |  |
Minimum period of service, for employees hired prior to April 1, 1997, to have defined benefit plan contribution percentage calculated at 7% of eligible compensation | 15 years |  |  |
Employer contribution as percentage of eligible compensation for employees hired prior to April 1, 1997 having more than 15 years of service | 7.00% |  |  |
Highest number of consecutive months of earnings used to calculate amounts earned when defined benefit and supplemental defined benefit plans were frozen | 36 months |  |  |
Total expense recorded for plans | 10,295 | 10,415 | 12,353 |
Health reimbursement account balance | 2,746 |  |  | 7,310
Health reimbursement accounts funding | 181 | 168 | 184 |
Total Fixed Maturities [Member] |  |  |  |
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Defined Benefit Plan, Target Allocation Percentage | 50% fixed income funds |  |  |
Equity Securities [Member] |  |  |  |
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Defined Benefit Plan, Target Allocation Percentage | 50% equity |  |  |
Defined Benefit Plan [Member] |  |  |  |
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Employee Vesting Percentage | 100.00% |  |  |
Defined benefit plan vesting percentage of participants | 100.00% |  |  |
Expected amortization of net loss expected in the next fiscal year | 1,371 |  |  |
Supplemental Retirement Plans [Member] |  |  |  |
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Expected amortization of net loss expected in the next fiscal year | 158 |  |  |
401 K [Member] |  |  |  |
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Employee Vesting Percentage | 100.00% |  |  |
401(k) Plan Employer Contribution Percent | 3.00% |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 20.00% |  |  |
Non-qualified Defined Contribution Plan [Member] |  |  |  |
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Participants are 100% vested in the Defined Contribution plan after | 3 years |  |  |
Employee Vesting Percentage | 100.00% |  |  |
Pension Costs [Member] |  |  |  |
Pension Plans and Other Postretirement Benefits (Textual) [Abstract] |  |  |  |
Expected amortization of net loss expected in the next fiscal year | $ 246 |  |  |

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- Definition Minimum period of service, for employees hired prior to April 1, 1997, to have defined benefit plan contribution percentage calculated at 7% of eligible compensation. + References No definition available. + Details
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- Definition Defined benefit plan vesting percentage of participants. + References No definition available. + Details
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- Definition Employee vesting percentage. + References No definition available. + Details
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- Definition Defined contribution plan employer contribution as percentage of eligible compensation for employees hired prior to specified date having more than specified year of service. + References No definition available. + Details
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- Definition Defined contribution plan employer contribution as percentage of eligible compensation for hired on or after specified date. + References No definition available. + Details
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- Definition Health reimbursement account balance. + References No definition available. + Details
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- Definition Health reimbursement accounts funding. + References No definition available. + Details
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- Definition Minimum years of service required for full vesting. + References No definition available. + Details
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- Definition Reduction in expenses due to changes in plan for other postretirement benefits. + References No definition available. + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
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- Definition Description of target allocation percentages, or range of percentages, considering the major categories of plan assets as of the latest statement of financial position presented (on a weighted-average basis for employers with more than one plan) that are pertinent to an understanding of the plan investment policies and strategies. + 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)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition The amount of pension benefit costs recognized during the period for (1) defined benefit plans and (2) defined contribution plans. For defined benefit plans, pension expense includes the following components: service cost, interest cost, expected return on plan assets, gain (loss) on plan assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. For defined contribution plans, the pension expense generally equals the firm's contribution to employees' accounts (if the firm contributes) during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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