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Employee Benefits (Details 2) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 item | Dec. 31, 2011 | Dec. 31, 2010
Deferred compensation plan |  |  |
Number of investments against the values of which, employee may be allowed to reduce their compensation | 4 |  |
Number of investments, which are taken as reference to measure the interest that may be acquired | 3 |  |
Employer contribution as percentage of the employees' reduced compensation | 3.00% |  |
Number of deferred compensation plans | 2 |  |
Deferred compensation plan expense (income) | $ 4,148,000 | $ (1,505,000) | $ 4,267,000
Deferred compensation plan liability included in other liabilities | 32,774,000 | 29,647,000 |
Deferred compensation plan assets included in other current assets | 36,988,000 | 33,924,000 |
Investment income (loss) related to the mark-to-market of investments treated as trading securities | 4,076,000 | (1,584,000) | 4,203,000
Defined contribution plan covering domestic, salaried and clerical employees |  |  |
Defined contribution plans |  |  |
Employer contribution (as a percent of employee contributions) | 50.00% | 50.00% | 50.00%
Employer contribution limit per calendar year (as a percent of compensation) | 6.00% | 6.00% | 6.00%
Vesting percentage after one year of service | 20.00% |  |
Additional vesting percentage with each additional complete year of service | 20.00% |  |
Contribution expense | 2,063,000 | 1,956,000 | 1,826,000
Defined contribution plan covering hourly, non union and Daily's employees |  |  |
Defined contribution plans |  |  |
Number of defined contribution plans covering Daily's employees | 2 |  |
Contribution expense | $ 546,000 | $ 577,000 | $ 1,455,000

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- Definition Represents the employer's contribution as a percentage of employees' reduced compensation under the deferred compensation plan which allows certain employees to reduce their compensation in exchange for values in investments. + References No definition available. + Details
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- Definition Represents the number of investments, which are taken as reference to measure the interest that may be acquired by employees in exchange for reduction in their compensation. + References No definition available. + Details
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- Definition Represents the number of investments against the values of which, employees may be allowed to reduce their compensation under deferred compensation plan. + References No definition available. + Details
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- Details
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- Definition Represents the deferred compensation plan investment income (loss) related to the mark-to-market of the investments treated as trading securities. + References No definition available. + Details
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- Definition Represents the number of defined contribution plans covering Daily's employees. + References No definition available. + Details
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- Details
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- Definition The limit of annual employer contributions to the plan per calendar year as a percentage of compensation. + References No definition available. + Details
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- Definition The employer contributions to the plan per calendar year as a percentage of employee contributions. + References No definition available. + Details
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- Definition Represents the percentage of vesting after first year of service. + References No definition available. + Details
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- Definition Represents the number of deferred compensation plans. + References No definition available. + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 11 -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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