Impairment Charges for Other Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2013
Patents
|
Dec. 31, 2012
Patents
|
Dec. 31, 2013
Trademarks
|
Dec. 31, 2012
Trademarks
|
Dec. 31, 2013
Product Certification And Licensing Costs
|
Dec. 31, 2012
Product Certification And Licensing Costs
|
Dec. 31, 2013
LED Replacement Lamps and Fixtures
|
Dec. 31, 2013
LED Replacement Lamps and Fixtures
Patents
|
Dec. 31, 2013
LED Replacement Lamps and Fixtures
Trademarks
|
Dec. 31, 2013
LED Replacement Lamps and Fixtures
Product Certification And Licensing Costs
|
|
Finite-Lived Intangible Assets [Line Items] | ||||||||||||
Gross Carrying Amount | $ 21,601 | $ 12,926 | $ 268 | $ 268 | $ 6,034 | $ 4,314 | $ 61 | $ 61 | $ 1,227 | $ 1,073 | $ 29 | $ 125 |
Accumulated Amortization | (3,732) | (873) | (130) | (107) | (615) | (250) | (46) | (29) | (212) | (139) | (3) | (70) |
Net Carrying Amount Prior to Impairment | 1,015 | 934 | 26 | 55 | ||||||||
Impairment Recognized | (1,015) | (934) | (26) | (55) | ||||||||
Net Carrying Amount at December 31, 2012 | $ 17,869 | $ 12,053 | $ 138 | $ 161 | $ 5,419 | $ 4,064 | $ 15 | $ 32 |