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Other Long-term Debt - Summary of Scheduled Loan Payments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Long Term Debt Maturities Repayments Of Principal [Line Items]
Long term debt payments, 2013	$ 30,085
Long term debt payments, 2014	57,890
Long term debt payments, 2015	79,970
Long term debt payments, 2016	387
Long term debt payments, 2017	405
Long term debt payments, Thereafter	5,734
Long term debt payments Total	174,471	101,664
Long-term debt payments [Member]
Long Term Debt Maturities Repayments Of Principal [Line Items]
Long term debt payments, 2013	29,968
Long term debt payments, 2014	57,852
Long term debt payments, 2015	79,970
Long term debt payments, 2016	387
Long term debt payments, 2017	405
Long term debt payments, Thereafter	5,734
Long term debt payments Total	174,316
Purchase valuation amortization [Member]
Long Term Debt Maturities Repayments Of Principal [Line Items]
Long term debt payments, 2013	117
Long term debt payments, 2014	38
Long term debt payments, 2015	0
Long term debt payments, 2016	0
Long term debt payments, 2017	0
Long term debt payments, Thereafter	0
Long term debt payments Total	$ 155

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Long Term Debt Maturities Repayments Of Principal After Year Six

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Long Term Debt Maturities Repayments Of Principal In Year Six

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601



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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 10

-Subparagraph b

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-SubTopic 10

-Section S99

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-Name Regulation S-X (SX)

-Number 210

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