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Employee Benefit Plans (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Long Term Cash Incentive Plan [Member] | Dec. 31, 2010 Long Term Cash Incentive Plan [Member] | Dec. 31, 2012 Long Term Cash Incentive Plan [Member] | Dec. 31, 2011 Long Term Cash Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expenses related to employee benefit plans | $ 1,469 | $ 1,527 | $ 1,801 |  |  |  |
Deferred compensation liability related to employee benefit plans |  |  |  | 0 |  | 0 | 2,173
Deferred compensation liability, current and noncurrent | 0 |  |  |  |  | 606 |
Period to receive cash under Long-Term Cash Incentive Plans |  |  |  | 3 years | 3 years |  |
Awards granted under the LTCIP |  |  |  |  |  | $ 0 | $ 0

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