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Summary of Significant Accounting Policies (Details Textual) (USD $)
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12 Months Ended | ||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Accounting Policies [Abstract] | |||
| Equity method investment, period for income (loss) recognition, one month lag | 1 month | ||
| Impairment of long-lived assets | $ 0 | $ 0 | $ 0 |
| Advertising expense | 178,364,000 | 139,830,000 | 116,694,000 |
| Standard product warranty period | 90 days | ||
| Research and development expense | 50,564,000 | 42,605,000 | 48,574,000 |
| Valuation allowance | 7,831,000 | 9,835,000 | |
| Accumulated other comprehensive (loss) income, net of tax | (308,000) | 120,000 | |
| Foreign currency translation adjustment (loss), net of tax | (428,000) | 49,000 | (140,000) |
| Foreign currency translation adjustment, tax (benefit) | 200,000 | 48,000 | 11,000 |
| Realized loss on XM Canada investment foreign currency translation adjustment | $ 0 | $ 0 | $ 6,072,000 |
| X | ||||||||||
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- Definition
Equity Method Investment, Period for Income (Loss) Recognition No definition available.
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| X | ||||||||||
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- Definition
Realized loss on investment foreign currency translation adjustment. No definition available.
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| X | ||||||||||
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- Definition
Standard Product Warranty Period No definition available.
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- Details
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| X | ||||||||||
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- Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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