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Employee Benefit Plans (Schedule of Fair Value of Plan Assets) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets | $ 27,360 | $ 35,334
Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets | 9,590 | 155
Fair Value Total [Member] |  |
Fair value of plan assets | 36,950 | 35,489
Fixed income investments - Money market funds [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets |  |
Fixed income investments - Money market funds [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets | 9,590 | 155
Fixed income investments - Money market funds [Member] | Fair Value Total [Member] |  |
Fair value of plan assets | 9,590 | 155
Equity investments - Large cap value fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets | 15,595 | 14,703
Equity investments - Large cap value fund [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Equity investments - Large cap value fund [Member] | Fair Value Total [Member] |  |
Fair value of plan assets | 15,595 | 14,703
Equity investments - Small cap growth fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets | 2,624 | 2,845
Equity investments - Small cap growth fund [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Equity investments - Small cap growth fund [Member] | Fair Value Total [Member] |  |
Fair value of plan assets | 2,624 | 2,845
Equity investments - Mid cap growth fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets | 3,220 | 3,541
Equity investments - Mid cap growth fund [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Equity investments - Mid cap growth fund [Member] | Fair Value Total [Member] |  |
Fair value of plan assets | 3,220 | 3,541
Equity investments - Foreign equity fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets | 2,669 | 3,544
Equity investments - Foreign equity fund [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Equity investments - Foreign equity fund [Member] | Fair Value Total [Member] |  |
Fair value of plan assets | 2,669 | 3,544
Equity investments - Company stock [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets | 3,252 | 2,246
Equity investments - Company stock [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Equity investments - Company stock [Member] | Fair Value Total [Member] |  |
Fair value of plan assets | $ 3,252 | 2,246
Fixed income investments - US government bond fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets |  | 3,398
Fixed income investments - US government bond fund [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Fixed income investments - US government bond fund [Member] | Fair Value Total [Member] |  |
Fair value of plan assets |  | 3,398
Fixed income investments - US corporate bond fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets |  | 3,357
Fixed income investments - US corporate bond fund [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Fixed income investments - US corporate bond fund [Member] | Fair Value Total [Member] |  |
Fair value of plan assets |  | 3,357
Fixed income investments - US corporate high yield bond fund [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Fair value of plan assets |  | 1,700
Fixed income investments - US corporate high yield bond fund [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair value of plan assets |  |
Fixed income investments - US corporate high yield bond fund [Member] | Fair Value Total [Member] |  |
Fair value of plan assets |  | $ 1,700

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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + 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=64937038&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=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + Details
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