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Pension Plans (Tables) - Pension Plan [Member] | 12 Months Ended
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Dec. 31, 2016
Funded Status and Accrued Pension Cost | The following table sets forth the funded status at December 31 (amounts in thousands):
|  | 2016 |  |  | 2015 |
CHANGE IN BENEFIT OBLIGATION: |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 87,236 |  |  | $ | 94,113 |
Interest cost |  |  | 3,173 |  |  |  | 3,423 |
Actuarial (gain) loss |  |  | 304 |  |  |  | (3,377 | )
Benefits paid |  |  | (5,353 | ) |  |  | (6,923 | )
Benefit obligation at end of year |  |  | 85,360 |  |  |  | 87,236 |
CHANGE IN PLAN ASSETS: |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  |  | 65,439 |  |  |  | 75,260 |
Actual return (loss) on plan assets |  |  | 5,360 |  |  |  | (2,898 | )
Benefits paid |  |  | (5,353 | ) |  |  | (6,923 | )
Fair value of plan assets at end of year |  |  | 65,446 |  |  |  | 65,439 |
Funded status and accrued pension cost |  | $ | (19,914 | ) |  | $ | (21,797 | )
Allocation of Defined Benefit Pension Plans Assets | The allocation of the defined benefit pension plan’s assets at December 31 are as follows (amounts in thousands):
Asset Class |  | 2016 |  |  | 2015 |
Cash |  | $ | 728 |  |  | $ | 983 |
Equity securities |  |  | 64,718 |  |  |  | 64,456 |
Total |  | $ | 65,446 |  |  | $ | 65,439 |
Benefit Obligation [Member] |
Assumptions Used to Determine Benefit Obligations | The weighted-average assumptions used to determine the benefit obligation at December 31 are as follows:
|  | 2016 |  |  | 2015 |  |  | 2014 |
Discount rate |  |  | 3.72 | % |  |  | 3.90 | % |  |  | 3.66 | %
Rate of compensation increase |  |  | N/A |  |  |  | N/A |  |  |  | N/A |
Pension Expense [Member] |
Assumptions Used to Determine Benefit Obligations | The weighted-average assumptions used to determine the net periodic pension expense for years ended December 31 are as follows:
|  | 2016 |  |  | 2015 |  |  | 2014 |
Discount rate |  |  | 3.70 | % |  |  | 3.77 | % |  |  | 4.49 | %
Rate of compensation increase |  |  | N/A |  |  |  | N/A |  |  |  | N/A |
Expected long-term rate of return on plan assets |  |  | 6.50 | % |  |  | 6.50 | % |  |  | 7.50 | %

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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=65897934&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + 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 (k) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the aggregate benefit obligation and aggregate fair value of plan assets for pension plans and/or other employee benefit plans with benefit obligations in excess of plan assets as of the measurement date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920 + Details
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