Warranty Reserves - Schedule of Warranty Reserves (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2013
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Sep. 30, 2012
|
Sep. 30, 2013
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Sep. 30, 2012
|
|
Movement in Standard Product Warranty Accrual [Roll Forward] | ||||
Warranty reserves, beginning of period | $ 1,939 | $ 991 | $ 1,593 | $ 985 |
Warranty reserves accrued | 721 | 104 | 1,449 | 226 |
Warranty expenditures | (244) | (49) | (626) | (165) |
Warranty reserves, end of period | $ 2,416 | $ 1,046 | $ 2,416 | $ 1,046 |