Warranty Accrual Included in Other Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Accrued Liabilities [Line Items]
Balance at beginning of period	$ 9,786	$ 8,153	$ 9,886
Acquisition			327
Accruals for warranties issued during the period	10,574	14,704	13,167
Accruals related to pre-existing warranties	(3,534)	877	(2,689)
Settlements made during the period	(10,166)	(13,948)	(12,538)
Balance at end of period	$ 6,660	$ 9,786	$ 8,153