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Employee Benefit Plans Employee Benefit Plans 7 (Details) - Pension Benefits - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Employee benefit plans |  |  |
Fair Value | $ 150,872 | $ 142,174 | $ 140,561
Unfunded Commitments | 0 | 0 |
Cash equivalents |  |  |
Employee benefit plans |  |  |
Fair Value | 500 | 469 |
Unfunded Commitments |  | 0 |
Fixed income fund |  |  |
Employee benefit plans |  |  |
Fair Value | 57,674 | 56,218 |
Unfunded Commitments |  | 0 |
U.S. small/mid cap funds |  |  |
Employee benefit plans |  |  |
Fair Value | 24,312 | 21,219 |
Unfunded Commitments |  | 0 |
U.S. large cap funds |  |  |
Employee benefit plans |  |  |
Fair Value | 46,175 | 42,395 |
Unfunded Commitments |  | 0 |
International funds |  |  |
Employee benefit plans |  |  |
Fair Value | 14,869 | 14,455 |
Unfunded Commitments |  | 0 |
Total equity funds |  |  |
Employee benefit plans |  |  |
Fair Value | 85,356 | 78,069 |
Unfunded Commitments | 0 | 0 |
Real estate funds |  |  |
Employee benefit plans |  |  |
Fair Value | $ 7,342 | 7,418 |
Unfunded Commitments |  | $ 0 |

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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 The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=36462937&loc=SL6742756-110258 + Details
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