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Financial Instruments (Assets measured at fair value on a recurring basics) (Details) (Fair Value, Measurements, Recurring [Member], USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2014
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Dec. 31, 2013
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Fair Value, Inputs, Level 1 [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Deferred compensation plan assets (mutual funds) | $ 1,882 | $ 2,183 |
| Total assets at fair value | 1,882 | 2,183 |
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Fair Value, Inputs, Level 2 [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Deferred compensation plan assets (mutual funds) | 0 | 0 |
| Total assets at fair value | 0 | 0 |
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Fair Value, Inputs, Level 3 [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Deferred compensation plan assets (mutual funds) | 0 | 0 |
| Total assets at fair value | $ 0 | $ 0 |