|
Product Warranty Costs - Product Warranty Liability (Detail) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
Mar. 31, 2014
|
Dec. 31, 2013
|
|---|---|---|---|---|
| Composition of balance: | ||||
| Short-term | $ 975 | $ 981 | ||
| Long-term | 1,686 | 1,633 | ||
| Total warranty balance | $ 2,661 | $ 2,614 | $ 3,100 | $ 3,090 |