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Employee Benefit Plans (Schedule of Fair Value of Pension Plan Assets) (Details) - Pension Benefit Plan [Member] - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 52,931 | $ 51,623 | $ 46,443
Mutual Funds - Small Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 251 | 261 |
Mutual Funds - Small Cap Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 217 |  |
Mutual Funds - Small Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,107 | 876 |
Mutual Funds - Mid Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 998 | 1,013 |
Mutual Funds - Mid Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 606 | 627 |
Mutual Funds - Large Cap Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 955 | 1,187 |
Mutual Funds - Large Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 15,432 | 15,321 |
Mutual Funds - Foreign Large Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 284 | 989 |
Mutual Funds - Foreign Large Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 449 |
Mutual Funds - Foreign Large Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,775 | 2,566 |
Mutual Funds - Diversified Emerging Markets [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 737 |
Mutual Funds - Intermediate Term Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 8,707 | 9,824 |
Mutual Funds - World Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,291 | 8,668 |
Money Market Funds - Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 652 | 513 |
Common Equity Securities - Non-Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 202 | 280 |
Common Equity Securities - Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,704 | 1,656 |
Common Equity Securities - Utilities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,754 | 1,504 |
Common Equity Securities - Consumer Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,191 | 1,123 |
Common Equity Securities - Consumer Staples [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 553 | 459 |
Common Equity Securities - Consumer Cyclicals [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 946 | 922 |
Common Equity Securities - Industrial Resources [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 284 | 155 |
Common Equity Securities - Capital Equipment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 527 | 453 |
Common Equity Securities - Technology [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,118 | 1,328 |
Common Equity Securities - Energy [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 377 | 712 |
Fair Value, Level 1 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 52,931 | 51,237 |
Fair Value, Level 1 [Member] | Mutual Funds - Small Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 251 | 261 |
Fair Value, Level 1 [Member] | Mutual Funds - Small Cap Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 217 |  |
Fair Value, Level 1 [Member] | Mutual Funds - Small Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,107 | 876 |
Fair Value, Level 1 [Member] | Mutual Funds - Mid Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 998 | 1,013 |
Fair Value, Level 1 [Member] | Mutual Funds - Mid Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 606 | 627 |
Fair Value, Level 1 [Member] | Mutual Funds - Large Cap Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 955 | 1,187 |
Fair Value, Level 1 [Member] | Mutual Funds - Large Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 15,432 | 15,321 |
Fair Value, Level 1 [Member] | Mutual Funds - Foreign Large Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 284 | 989 |
Fair Value, Level 1 [Member] | Mutual Funds - Foreign Large Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 449 |
Fair Value, Level 1 [Member] | Mutual Funds - Foreign Large Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,775 | 2,566 |
Fair Value, Level 1 [Member] | Mutual Funds - Diversified Emerging Markets [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 737 |
Fair Value, Level 1 [Member] | Mutual Funds - Intermediate Term Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 8,707 | 9,824 |
Fair Value, Level 1 [Member] | Mutual Funds - World Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,291 | 8,668 |
Fair Value, Level 1 [Member] | Money Market Funds - Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 652 | 127 |
Fair Value, Level 1 [Member] | Common Equity Securities - Non-Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 202 | 280 |
Fair Value, Level 1 [Member] | Common Equity Securities - Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,704 | 1,656 |
Fair Value, Level 1 [Member] | Common Equity Securities - Utilities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,754 | 1,504 |
Fair Value, Level 1 [Member] | Common Equity Securities - Consumer Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,191 | 1,123 |
Fair Value, Level 1 [Member] | Common Equity Securities - Consumer Staples [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 553 | 459 |
Fair Value, Level 1 [Member] | Common Equity Securities - Consumer Cyclicals [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 946 | 922 |
Fair Value, Level 1 [Member] | Common Equity Securities - Industrial Resources [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 284 | 155 |
Fair Value, Level 1 [Member] | Common Equity Securities - Capital Equipment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 527 | 453 |
Fair Value, Level 1 [Member] | Common Equity Securities - Technology [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,118 | 1,328 |
Fair Value, Level 1 [Member] | Common Equity Securities - Energy [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 377 | 712 |
Fair Value, Level 2 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 386 |
Fair Value, Level 2 [Member] | Mutual Funds - Small Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Small Cap Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Small Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Mid Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Mid Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Large Cap Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Large Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Foreign Large Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Foreign Large Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Diversified Emerging Markets [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - Intermediate Term Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Mutual Funds - World Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Money Market Funds - Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 386 |
Fair Value, Level 2 [Member] | Common Equity Securities - Non-Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Utilities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Consumer Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Consumer Staples [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Consumer Cyclicals [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Industrial Resources [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Capital Equipment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Technology [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 2 [Member] | Common Equity Securities - Energy [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Small Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Small Cap Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Small Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Mid Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Mid Cap Value [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Large Cap Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Large Cap Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Foreign Large Core [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Foreign Large Blend [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Diversified Emerging Markets [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - Intermediate Term Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Mutual Funds - World Bond [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Money Market Funds - Cash and Cash Equivalents [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Non-Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Financial Services [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Utilities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Consumer Growth [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Consumer Staples [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Consumer Cyclicals [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Industrial Resources [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Capital Equipment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Technology [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |
Fair Value, Level 3 [Member] | Common Equity Securities - Energy [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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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