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Current and Noncurrent Accrued and Other Liabilities - Summary of Current and Noncurrent Accrued and Other Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Dec. 31, 2011
Current And Noncurrent Accrued And Other Liabilities [Line Items]        
Deferred revenue on extended warranty contracts $ 7,046 $ 7,007    
Customer deposits 7,025 8,189    
Accrued warranty costs 6,486 6,172 5,616 5,370
Accrued payroll and benefits 5,544 6,612    
Other 20,219 23,087    
Total current and noncurrent accrued liabilities 46,320 51,067    
Less noncurrent portion 16,433 16,369    
Current portion of accrued and other liabilities $ 29,887 $ 34,698