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Debt - Additional Information (Detail) (USD $)
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6 Months Ended |
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Jun. 30, 2013
Bank
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| Credit Facility [Line Items] | |
| Number of banks to which Company is party to a Credit Agreement | 2 |
| Credit Agreement expiration date | Oct. 01, 2017 |
| 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 |
| Available increase in borrowings under Credit Agreement | $ 100,000,000 |
| Calculated maximum borrowings | 150,000,000 |
| Calculated maximum borrowing amount available in current year | 149,500,000 |
| Outstanding borrowings | $ 0 |
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Credit Agreement [Member]
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| 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) |
| Percentage of federal funds rate | Highest of the federal funds rate plus 0.5%, the prime rate, or LIBOR plus 1.0% |
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Minimum [Member] | Credit Agreement [Member]
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| 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] | Credit Agreement [Member]
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| 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% |