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Employee Benefit Plans - Narrative (Details) (USD $) | 3 Months Ended | 6 Months Ended |  |  | 12 Months Ended
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Dec. 31, 2013 | Jun. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 Other Postretirement Benefit Plans, Defined Contribution [Member] plan | Oct. 31, 2011 Western Conference of Teamsters Pension Plan [Member] | Jun. 30, 2012 Labor Management Pension Fund [Member] quarter
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |
Effect of Curtailments |  | $ 34,000 |  |  |  |  |
Withdrawal obligation |  |  |  |  |  | 0 | 4,300,000
Quarterly installment payments on estimated withdrawal liability |  |  |  |  |  |  | 100,000
Number of quarters relating to installment payments on estimated withdrawal liability |  |  |  |  |  |  | 80
Determination period relating to withdrawal liability |  |  |  |  |  |  | 24 months
Number of non-pension multiemployer plans that the Company participates in |  |  |  |  | 8 |  |
Percentage of employee contribution eligible for Company matching | 50.00% |  |  |  |  |  |
Company contribution, maximum percentage of employee's eligible income | 6.00% |  |  |  |  |  |
Plan periodic vesting percentage | 20.00% |  |  |  |  |  |
Plan, periodic vesting period | 5 years |  |  |  |  |  |
Automatic vesting age | 65 years |  |  |  |  |  |
Current employees, percent vested | 100.00% |  |  |  |  |  |
Employer match contribution amount |  |  | $ 500,000 | $ 500,000 |  |  |

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- Definition The amount of decrease that is related to an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Curtailment -URI http://asc.fasb.org/extlink&oid=6520938 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 88 -Paragraph 6 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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