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Fair Value Measurements (Narrative) (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2016 USD ($) property | Jun. 30, 2015 USD ($) property | Dec. 31, 2015 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |
Percentage of deferred compensation invested in life insurance contracts | 65.00% |  |
Number of years long-term sales growth forecasted over | 6 years |  |
Average long-term sales growth forecast, over next 4 years, percent per year | 14.00% |  |
Combined carrying value | $ 151,250 | $ 148,639 | $ 150,600
Vacant Owned Facilities |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |
Number of vacant owned facilities | property | 1 | 3 |
Number of properties classified as fixed assets | property | 1 | 2 |
Estimated combined fair value | $ 3,000 | $ 4,000 |
Combined carrying value | $ 2,500 | $ 3,700 |

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