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Debt - Additional Information (Detail) (USD $) | 0 Months Ended | 12 Months Ended |  |  | 0 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 10, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 10, 2012 Letter of Credit [Member] | Sep. 10, 2012 Revolving Credit Facility [Member] | Sep. 30, 2013 Revolving Credit Facility [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] Maximum [Member] | Dec. 31, 2013 Revolving Credit Facility [Member] Minimum [Member]
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Term for credit facility | 5 years |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  | $ 75,000,000 |  |  |  |
Credit facility amount increase provision on condition |  |  |  |  | 50,000,000 |  |  |  |
Repayment of debt |  | 15,000,000 |  |  |  | 15,000,000 |  |  |
Limit for the issuance of standby letters of credit |  |  |  | 7,500,000 |  |  |  |  |
Outstanding under the Credit Facility |  | $ 0 | $ 15,000,000 |  |  |  |  |  |
Credit Facility Interest Periods |  |  |  |  |  |  | 1, 2, 3 or 6 months |  |
percentage of margin on principal amount |  |  |  |  |  |  |  | 2.50% | 0.75%
Commitment fee |  |  |  |  |  |  |  | 0.50% | 0.35%
Minimum interest coverage ratio |  |  |  |  |  |  | At least 4.00:1 |  |
Minimum percentage of interest adjustment |  |  |  |  |  |  | 4.00 |  |
Leverage ratio |  |  |  |  |  |  | No greater than 2.75:1 |  |
Maximum indebtedness to EBITDA |  |  |  |  |  |  | 2.75 |  |

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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer. + References No definition available. + Details
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- Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -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 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
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- Definition Credit Facility Term + References No definition available. + Details
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- Definition Leverage Ratios + References No definition available. + Details
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- Definition Line Of Credit Facility Basis Spread On Alternate Base Rate + References No definition available. + Details
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- Definition Line of Credit Facility Description of London Inter Bank Offered Rate + References No definition available. + Details
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- Definition Line Of Credit Facility Increase Additional Borrowings On Condition Satisfaction + References No definition available. + Details
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- Definition Maximum Leverage Ratio + References No definition available. + Details
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- Definition Minimum Interest Coverage Ratio One + References No definition available. + Details
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- Definition Minimum Interest Coverage Ratio Under Credit Facility + References No definition available. + Details
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