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Retirement Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2015
Key Assumptions used in Determining Benefit Plan Costs and Obligations | The following table includes the key assumptions used in determining the Company’s benefit plan costs and obligations:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Used to Determine Plan costs for years ended December 31: |  |  |  |  |  |  |  |  |
Discount Rate(1) |  |  | 4.00 | % |  |  | 4.80 | % |  |  | 4.00 | %
Rate of Compensation Increase |  |  | 3.00 | % |  |  | 3.00 | % |  |  | 3.00 | %
Expected Long-term rate of return on plan assets |  |  | 8.00 | % |  |  | 8.00 | % |  |  | 8.50 | %
Health Care Cost Trend Rate Assumed for Next Year |  |  | 7.00 | % |  |  | 8.00 | % |  |  | 8.00 | %
Ultimate Health Care Cost Trend Rate |  |  | 4.00 | % |  |  | 4.00 | % |  |  | 4.00 | %
Year that Ultimate Health Care Cost Trend Rate is reached |  |  | 2018 |  |  |  | 2018 |  |  |  | 2017 |
Effect of 1% Increase in Health Care Cost Trend Rate (000’s) |  | $ | 1,383 |  |  | $ | 989 |  |  | $ | 1,169 |
Effect of 1% Decrease in Health Care Cost Trend Rate (000’s) |  | $ | (1,040 | ) |  | $ | (771 | ) |  | $ | (895 | )
| (1) | As a result of the addition of a plan participant to the SERP in July 2015, the Company was required to update the discount rate used in determining SERP costs for the remainder of 2015. Based on an assessment of current market conditions using high quality corporate bond interest rate indices and pension yield curves at that time, the Company assumed a discount rate of 4.30% for the SERP from July through December of 2015.
Used to Determine Benefit Obligations at December 31: |  |  |  |  |  |  |  |  |
Discount Rate |  |  | 4.30 | % |  |  | 4.00 | % |  |  | 4.80 | %
Rate of Compensation Increase |  |  | 3.00 | % |  |  | 3.00 | % |  |  | 3.00 | %
Health Care Cost Trend Rate Assumed for Next Year |  |  | 7.00 | % |  |  | 7.00 | % |  |  | 8.00 | %
Ultimate Health Care Cost Trend Rate |  |  | 4.00 | % |  |  | 4.00 | % |  |  | 4.00 | %
Year that Ultimate Health care Cost Trend Rate is reached |  |  | 2022 |  |  |  | 2018 |  |  |  | 2018 |
Effect of 1% Increase in Health Care Cost Trend Rate (000’s) |  | $ | 14,877 |  |  | $ | 15,325 |  |  | $ | 9,957 |
Effect of 1% Decrease in Health Care Cost Trend Rate (000’s) |  | $ | (11,611 | ) |  | $ | (11,829 | ) |  | $ | (7,942 | )
Components of Retirement Plan Costs | The following table provides the components of the Company’s Retirement plan costs (000’s):
|  | Pension Plan |  |  | PBOP Plan |  |  | SERP |
|  | 2015 |  |  | 2014 |  |  | 2013 |  |  | 2015 |  |  | 2014 |  |  | 2013 |  |  | 2015 |  |  | 2014 |  |  | 2013 |
Service Cost |  | $ | 3,689 |  |  | $ | 3,006 |  |  | $ | 3,573 |  |  | $ | 2,622 |  |  | $ | 1,988 |  |  | $ | 2,523 |  |  | $ | 120 |  |  | $ | 57 |  |  | $ | 73 |
Interest Cost |  |  | 5,392 |  |  |  | 5,092 |  |  |  | 4,567 |  |  |  | 2,918 |  |  |  | 2,686 |  |  |  | 2,448 |  |  |  | 330 |  |  |  | 272 |  |  |  | 241 |
Expected Return on Plan Assets |  |  | (6,779 | ) |  |  | (6,245 | ) |  |  | (5,955 | ) |  |  | (1,093 | ) |  |  | (920 | ) |  |  | (722 | ) |  |  | — |  |  |  | — |  |  |  | — |
Prior Service Cost Amortization |  |  | 265 |  |  |  | 211 |  |  |  | 208 |  |  |  | 1,682 |  |  |  | 1,682 |  |  |  | 1,701 |  |  |  | 85 |  |  |  | 11 |  |  |  | 11 |
Actuarial Loss Amortization |  |  | 4,714 |  |  |  | 2,847 |  |  |  | 4,229 |  |  |  | 1,150 |  |  |  | 56 |  |  |  | 786 |  |  |  | 327 |  |  |  | 100 |  |  |  | 184 |
Sub-total |  |  | 7,281 |  |  |  | 4,911 |  |  |  | 6,622 |  |  |  | 7,279 |  |  |  | 5,492 |  |  |  | 6,736 |  |  |  | 862 |  |  |  | 440 |  |  |  | 509 |
Amounts Capitalized or Deferred |  |  | (3,397 | ) |  |  | (1,881 | ) |  |  | (2,929 | ) |  |  | (3,423 | ) |  |  | (2,270 | ) |  |  | (3,010 | ) |  |  | — |  |  |  | — |  |  |  | — |
NPBC Recognized |  | $ | 3,884 |  |  | $ | 3,030 |  |  | $ | 3,693 |  |  | $ | 3,856 |  |  | $ | 3,222 |  |  | $ | 3,726 |  |  | $ | 862 |  |  | $ | 440 |  |  | $ | 509 |
Plans' Assets, Projected Benefit Obligations (PBO), and Funded Status | The following table represents information on the plans’ assets, projected benefit obligations (PBO), and funded status (000’s):
|  | Pension Plan |  |  | PBOP Plan |  |  | SERP |
Change in Plan Assets: |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Plan Assets at Beginning of Year |  | $ | 86,744 |  |  | $ | 82,551 |  |  | $ | 12,840 |  |  | $ | 10,829 |  |  | $ | — |  |  | $ | — |
Actual Return on Plan Assets |  |  | 645 |  |  |  | 4,248 |  |  |  | (214 | ) |  |  | 486 |  |  |  | — |  |  |  | — |
Employer Contributions |  |  | 4,215 |  |  |  | 4,191 |  |  |  | 4,000 |  |  |  | 3,650 |  |  |  | 40 |  |  |  | 53 |
Participant Contributions |  |  | — |  |  |  | — |  |  |  | 63 |  |  |  | 59 |  |  |  | — |  |  |  | — |
Benefits Paid |  |  | (4,410 | ) |  |  | (4,246 | ) |  |  | (2,515 | ) |  |  | (2,184 | ) |  |  | (40 | ) |  |  | (53 | )
Plan Assets at End of Year |  | $ | 87,194 |  |  | $ | 86,744 |  |  | $ | 14,174 |  |  | $ | 12,840 |  |  | $ | — |  |  | $ | — |
Change in PBO: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PBO at Beginning of Year |  | $ | 136,662 |  |  | $ | 108,295 |  |  | $ | 73,923 |  |  | $ | 56,899 |  |  | $ | 7,965 |  |  | $ | 5,857 |
Service Cost |  |  | 3,689 |  |  |  | 3,006 |  |  |  | 2,622 |  |  |  | 1,988 |  |  |  | 120 |  |  |  | 57 |
Interest Cost |  |  | 5,392 |  |  |  | 5,092 |  |  |  | 2,918 |  |  |  | 2,686 |  |  |  | 330 |  |  |  | 272 |
Participant Contributions |  |  | — |  |  |  | — |  |  |  | 63 |  |  |  | 59 |  |  |  | — |  |  |  | — |
Plan Amendments |  |  | 474 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 608 |  |  |  | — |
Benefits Paid |  |  | (4,410 | ) |  |  | (4,246 | ) |  |  | (2,515 | ) |  |  | (2,184 | ) |  |  | (40 | ) |  |  | (53 | )
Actuarial (Gain) or Loss |  |  | (991 | ) |  |  | 24,515 |  |  |  | (762 | ) |  |  | 14,475 |  |  |  | 194 |  |  |  | 1,832 |
PBO at End of Year |  | $ | 140,816 |  |  | $ | 136,662 |  |  | $ | 76,249 |  |  | $ | 73,923 |  |  | $ | 9,177 |  |  | $ | 7,965 |
Funded Status: Assets vs PBO |  | $ | (53,622 | ) |  | $ | (49,918 | ) |  | $ | (62,075 | ) |  | $ | (61,083 | ) |  | $ | (9,177 | ) |  | $ | (7,965 | )
Employer Contributions, Participant Contributions and Benefit Payments | The following table represents employer contributions, participant contributions and benefit payments (000’s).
|  | Pension Plan |  |  | PBOP Plan |  |  | SERP |
|  | 2015 |  |  | 2014 |  |  | 2013 |  |  | 2015 |  |  | 2014 |  |  | 2013 |  |  | 2015 |  |  | 2014 |  |  | 2013 |
Employer Contributions |  | $ | 4,215 |  |  | $ | 4,191 |  |  | $ | 3,700 |  |  | $ | 4,000 |  |  | $ | 3,650 |  |  | $ | 3,280 |  |  | $ | 40 |  |  | $ | 53 |  |  | $ | 53 |
Participant Contributions |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 63 |  |  | $ | 59 |  |  | $ | 36 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Benefit Payments |  | $ | 4,410 |  |  | $ | 4,246 |  |  | $ | 3,764 |  |  | $ | 2,515 |  |  | $ | 2,184 |  |  | $ | 1,942 |  |  | $ | 40 |  |  | $ | 53 |  |  | $ | 53 |
Estimated Future Benefit Payments | The following table represents estimated future benefit payments (000’s).
Estimated Future Benefit Payments |
|  | Pension |  |  | PBOP |  |  | SERP |
2016 |  | $ | 5,181 |  |  | $ | 2,178 |  |  | $ | 426 |
2017 |  |  | 5,522 |  |  |  | 2,318 |  |  |  | 421 |
2018 |  |  | 5,560 |  |  |  | 2,503 |  |  |  | 416 |
2019 |  |  | 6,086 |  |  |  | 2,700 |  |  |  | 475 |
2020 |  |  | 6,345 |  |  |  | 2,866 |  |  |  | 469 |
2021 - 2025 |  |  | 37,857 |  |  |  | 17,932 |  |  |  | 3,027 |
Actual Investment Allocations | The actual investment allocations are shown in the tables below.
Pension Plan |  | Target Allocation 2016 |  |  | Actual Allocation at December 31, |
|  |  | 2015 |  |  | 2014 |  |  | 2013 |
Equity Funds |  |  | 47 | % |  |  | 46 | % |  |  | 49 | % |  |  | 54 | %
Debt Funds |  |  | 37 | % |  |  | 37 | % |  |  | 36 | % |  |  | 32 | %
Real Estate Fund |  |  | 10 | % |  |  | 11 | % |  |  | 10 | % |  |  | 1 | %
Asset Allocation Fund(1) |  |  | 6 | % |  |  | 6 | % |  |  | 5 | % |  |  | 5 | %
Other(2) |  |  | 0 | % |  |  | 0 | % |  |  | 0 | % |  |  | 8 | %
Total |  |  |  |  |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
| (1) | Represents investments in an asset allocation fund. This fund invests in both equity and debt securities.
| (2) | Represents investments being held in cash equivalents as of December 31, 2013 pending transfer into a Real Estate Fund.
PBOP Plan |  | Target Allocation 2016 |  |  | Actual Allocation at December 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Equity Funds |  |  | 55 | % |  |  | 53 | % |  |  | 56 | % |  |  | 57 | %
Debt Funds |  |  | 45 | % |  |  | 47 | % |  |  | 44 | % |  |  | 43 | %
Total |  |  |  |  |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
Fair Value of Pension Plan Investments Estimated using Net Asset Value | The following tables set forth additional disclosures of Pension Plan investments whose fair value is estimated using net asset value per share as of December 31, 2015 and 2014 (000’s):
|  | Fair Value Estimated Using NAV Per Share |
Description |  | Fair Value |  |  | Unfunded Commitment |  |  | Redemption Frequency |  |  | Redemption Notice Period |
|  | December 31, 2015 |
SEI Core Property Collective Investment Trust Fund(1) |  | $ | 9,351 |  |  | $ | — |  |  |  | Quarterly |  |  |  | 65 days |
|  | December 31, 2014 |
SEI Core Property Collective Investment Trust Fund(1) |  | $ | 8,172 |  |  | $ | — |  |  |  | Quarterly |  |  |  | 65 days |
| (1) | The SEI Core Property Collective Investment Trust Fund, through the SEI Core Property Fund, seeks both current income and long-term capital appreciation through investing in underlying funds that acquire, manage, and dispose of commercial real estate properties.
Summary of Changes in the Fair Value of the Pension Plan Level 3 Assets | The table below sets forth a summary of changes in the fair value of the Pension Plan’s Level 3 assets for the years ended December 31, 2015 and 2014 (000’s):
Level 3 Assets—SEI Core Property Collective Investment Trust Fund |
|  | December 31, |
|  | 2015 |  |  | 2014 |
Beginning Balance |  | $ | 8,172 |  |  | $ | 1,125 |
Actual Return on Investments: |  |  |  |  |  |  |  |
Related to Investments Held at Year-End |  |  | 1,179 |  |  |  | 672 |
Related to Investments Sold During the Year |  |  | — |  |  |  | — |
Total Return on Investments |  |  | 1,179 |  |  |  | 672 |
Purchases, Sales and Settlements |  |  | — |  |  |  | 6,375 |
Ending Balance |  | $ | 9,351 |  |  | $ | 8,172 |
Pension Plans |
Assets Measured at Fair Value on Recurring Basis | Assets measured at fair value on a recurring basis for the Pension Plan as of December 31, 2015 and 2014 are as follows (000’s):
|  | Fair Value Measurements at Reporting Date Using |
Description |  | Balance as of December 31, |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pension Plan Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Funds |  | $ | 40,124 |  |  | $ | 40,124 |  |  | $ | — |  |  | $ | — |
Fixed Income Funds |  |  | 32,192 |  |  |  | 32,192 |  |  |  | — |  |  |  | — |
Asset Allocation Fund |  |  | 5,527 |  |  |  | 5,527 |  |  |  | — |  |  |  | — |
Real Estate Fund |  |  | 9,351 |  |  |  | — |  |  |  | — |  |  |  | 9,351 |
Total Assets |  | $ | 87,194 |  |  | $ | 77,843 |  |  | $ | — |  |  | $ | 9,351 |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pension Plan Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Funds |  | $ | 42,760 |  |  | $ | 42,760 |  |  | $ | — |  |  | $ | — |
Fixed Income Funds |  |  | 31,136 |  |  |  | 31,136 |  |  |  | — |  |  |  | — |
Asset Allocation Fund |  |  | 4,676 |  |  |  | 4,676 |  |  |  | — |  |  |  | — |
Real Estate Fund |  |  | 8,172 |  |  |  | — |  |  |  | — |  |  |  | 8,172 |
Total Assets |  | $ | 86,744 |  |  | $ | 78,572 |  |  | $ | — |  |  | $ | 8,172 |
Other Postretirement Benefit Plans, Defined Benefit |
Assets Measured at Fair Value on Recurring Basis | Assets measured at fair value on a recurring basis for the PBOP Plan as of December 31, 2015 and 2014 are as follows (000’s):
|  | Fair Value Measurements at Reporting Date Using |
Description |  | Balance as of December 31, |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PBOP Plan Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual Funds: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed Income Funds |  | $ | 6,620 |  |  | $ | 6,620 |  |  | $ | — |  |  | $ | — |
Equity Funds |  |  | 7,554 |  |  |  | 7,554 |  |  |  |  |  |  |  |  |
Total Assets |  | $ | 14,174 |  |  | $ | 14,174 |  |  | $ | — |  |  | $ | — |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PBOP Plan Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual Funds: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed Income Funds |  | $ | 5,661 |  |  | $ | 5,661 |  |  | $ | — |  |  | $ | — |
Index Funds |  |  | 5,313 |  |  |  | 5,313 |  |  |  |  |  |  |  |  |
Equity Funds |  |  | 1,866 |  |  |  | 1,866 |  |  |  |  |  |  |  |  |
Total Assets |  | $ | 12,840 |  |  | $ | 12,840 |  |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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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=58740216&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=58740216&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: 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=58740216&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2439-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=58242635&loc=d3e4179-114921 Reference 5: 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=58740216&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + 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 (f) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of net funded status of pension plans and/or other employee benefit plans. + 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 (c) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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