Current and Noncurrent Accrued and Other Liabilities - Summary of Current and Noncurrent Accrued and Other Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Payables And Accruals [Abstract]
Deferred revenue on extended warranty contracts	$ 7,292		$ 7,007
Accrued warranty costs	7,212	6,944	6,172	6,076	6,078	5,370
Accrued interest	6,150		569
Accrued payroll and benefits	6,062		6,612
Customer deposits	4,496		8,189
Other	21,710		22,518
Total current and noncurrent accrued liabilities	52,922		51,067
Less noncurrent portion	16,774		16,369
Current portion of accrued and other liabilities	$ 36,148		$ 34,698