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Debt (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Debt (Textual) [Abstract] | |||
| Debt Outstanding | $ 0 | $ 0 | |
| Feature of financial agreement | Maximum borrowings of the lesser of $150.0 million or the amount of eligible accounts receivable plus the amount of eligible finished goods and raw materials, less any reserves established by the banks. | ||
| Line of credit facility, accordion extension option | 100,000,000 | ||
| Calculated maximum borrowings | 150,000,000 | ||
| Calculated maximum borrowing amount available in current year | 145,800,000 | ||
| Outstanding borrowings | 0 | ||
| Total interest paid | 313,000 | 322,000 | 522,000 |
| Total interest capitalized | $ 0 | $ 0 | $ 29,000 |
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Prior Credit Agreement [Member]
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| Line of Credit Facility [Line Items] | |||
| Line of credit facility, interest rate description | LIBOR plus a margin that varied from 1.0% to 1.75% depending upon the ratio of debt outstanding to adjusted earnings or (2) the base rate (which is the higher of the federal funds rate plus 0.5% or the prime rate) plus 0% to 0.25% (depending upon the ratio of debt outstanding to adjusted earnings). | ||
| Base rate | Higher of the federal funds rate plus 0.5% or the prime rate | ||
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New Credit Agreement [Member]
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| Line of Credit Facility [Line Items] | |||
| Line of credit facility, interest rate description | LIBOR plus a margin that varies from 0.875% to 1.75% depending upon the Leverage Ratio (as defined in the Credit Agreement), or (2) the base rate (which is the highest of the federal funds rate plus 0.5%, the prime rate, or LIBOR plus 1.0%) plus 0% to 0.25% (depending upon the Leverage Ratio) | ||
| Base rate | Highest of the federal funds rate plus 0.5%, the prime rate, or LIBOR plus 1.0% | ||
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Minimum [Member] | Prior Credit Agreement [Member]
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| Line of Credit Facility [Line Items] | |||
| Debt instrument basis spread on variable rate | 1.00% | ||
| Percentage of commitment fee | 0.20% | ||
| Debt instrument basis spread on base rate | 0.00% | ||
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Minimum [Member] | New Credit Agreement [Member]
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| Line of Credit Facility [Line Items] | |||
| Debt instrument basis spread on variable rate | 0.875% | ||
| Percentage of commitment fee | 0.15% | ||
| Debt instrument basis spread on base rate | 0.00% | ||
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Maximum [Member] | Prior Credit Agreement [Member]
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| Line of Credit Facility [Line Items] | |||
| Debt instrument basis spread on variable rate | 1.75% | ||
| Percentage of commitment fee | 0.375% | ||
| Debt instrument basis spread on base rate | 0.25% | ||
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Maximum [Member] | New Credit Agreement [Member]
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| Line of Credit Facility [Line Items] | |||
| Debt instrument basis spread on variable rate | 1.75% | ||
| Percentage of commitment fee | 0.30% | ||
| Debt instrument basis spread on base rate | 0.25% | ||