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Retirement Plans (Table) | 9 Months Ended
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Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract] |
Schedule of Components of Net Periodic Benefit Cost |
|  | Pension Plan Quarter ended September 30, |  | Pension Plan Nine Months ended September 30,
($ in thousands) |  | 2016 |  | 2015 |  | 2016 |  | 2015
Net Periodic Benefit Cost: |  |  |  |  |  |  |  |
Service cost |  | $ | 41 |  |  | 1,913 |  |  | 1,647 |  |  | 5,738 |
Interest cost |  | 3,049 |  |  | 3,409 |  |  | 9,252 |  |  | 10,225 |
Expected return on plan assets |  | (5,006 | ) |  | (3,991 | ) |  | (12,982 | ) |  | (11,972 | )
Amortization of unrecognized net actuarial loss |  | 1,763 |  |  | 1,643 |  |  | 4,724 |  |  | 4,930 |
Total net periodic cost |  | $ | (153 | ) |  | 2,974 |  |  | 2,641 |  |  | 8,921 |
As of December 31, 2015, we anticipated contributing $11.7 million to the Pension Plan for full year 2016. Actual contributions amounted to $54.5 million in Nine Months 2016 and we do not anticipate any additional funding this year. The decrease in net periodic cost in Third Quarter 2016 reflects lower expense as a result of the contributions that were higher than our original expectation.
|  | Pension Plan Nine Months ended September 30,
|  | 2016 |  | 2015
Weighted-Average Expense Assumptions: |  |  |  |
Discount rate |  | 4.69 | % |  | 4.29 | %
Effective interest rate for calculation of service cost |  | 4.89 | % |  | — | %
Effective interest rate for calculation of interest cost |  | 4.02 | % |  | — | %
Expected return on plan assets |  | 6.37 | % |  | 6.27 | %
Rate of compensation increase 1 |  | n/a |  |  | 4.00 | %
Schedule of Weighted-Average Expense Assumptions |
|  | Pension Plan Nine Months ended September 30,
|  | 2016 |  | 2015
Weighted-Average Expense Assumptions: |  |  |  |
Discount rate |  | 4.69 | % |  | 4.29 | %
Effective interest rate for calculation of service cost |  | 4.89 | % |  | — | %
Effective interest rate for calculation of interest cost |  | 4.02 | % |  | — | %
Expected return on plan assets |  | 6.37 | % |  | 6.27 | %
Rate of compensation increase 1 |  | n/a |  |  | 4.00 | %
1 This assumption was 4.0% through March 31, 2016, the date after which benefits ceased accruing for all participants of the Pension Plan.

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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 components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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