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Pensions and Other Postretirement Benefit Plans (Reconciliation of Level 3 Assets) (Details) - Pension Plans [Member] - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | $ 183,199 | $ 168,390
Fair value of plan assets, end of year | 171,387 | 183,199
Significant Unobservable Inputs (Level 3) [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | 9,019 | 10,301
Net realized gains/(losses) | 53 | 44
Net unrealized gains/(losses) | 240 | 665
Net purchases, issuances and settlements | $ (1,041) | $ (1,991)
Net transfers (out of) Level 3 |  |
Fair value of plan assets, end of year | $ 8,271 | $ 9,019
Insurance Contracts [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | 2,133 |
Fair value of plan assets, end of year | 2,403 | 2,133
Insurance Contracts [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | $ 2,133 | $ 2,875
Net realized gains/(losses) |  |
Net unrealized gains/(losses) | $ 35 | $ 49
Net purchases, issuances and settlements | $ 235 | $ (791)
Net transfers (out of) Level 3 |  |
Fair value of plan assets, end of year | $ 2,403 | $ 2,133
Limited Partnerships [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | 6,522 |
Fair value of plan assets, end of year | 5,676 | 6,522
Limited Partnerships [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | 6,522 | 7,034
Net realized gains/(losses) | 46 | 44
Net unrealized gains/(losses) | 222 | 613
Net purchases, issuances and settlements | $ (1,114) | $ (1,169)
Net transfers (out of) Level 3 |  |
Fair value of plan assets, end of year | $ 5,676 | $ 6,522
Hedge Funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | 364 |
Fair value of plan assets, end of year | 192 | 364
Hedge Funds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets, beginning of year | 364 | $ 392
Net realized gains/(losses) | 7 |
Net unrealized gains/(losses) | (17) | $ 3
Net purchases, issuances and settlements | $ (162) | $ (31)
Net transfers (out of) Level 3 |  |
Fair value of plan assets, end of year | $ 192 | $ 364

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- Definition Actual return on plan assets, separately identifying the amount related to assets sold during the period. + 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)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=58740216&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)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 + Details
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- Definition Actual return on plan assets, separately identifying the amount related to assets still held at the reporting date. + 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)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=58740216&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)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 + Details
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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Amount of increase (decrease) in plan assets from purchases, sales and settlement of plan obligations. + 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)(iv)(02)(B) -URI http://asc.fasb.org/extlink&oid=58740216&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)(iv)(02)(B) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 + Details
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