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Information About Term Loan, Revolving Credit Facility and Other Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Debt Instrument [Line Items]
Carrying Amount	$ 59,251	$ 20,386
Fair Value	59,080	20,403
Term Loan
Debt Instrument [Line Items]
Carrying Amount	58,750	19,750
Fair Value	58,571	19,750
Other liabilities
Debt Instrument [Line Items]
Carrying Amount	501	636
Fair Value	$ 509	$ 653

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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