Business and Significant Accounting Policies (Details 3) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Inventories
Total charge for inventories on hand in excess of demand, plus a purchase commitment fee	$ 2,170,000us-gaap_InventoryWriteDown	$ 10,225,000us-gaap_InventoryWriteDown
Advertising Expenses
Advertising and sales promotion expenses incurred	$ 10,100,000us-gaap_MarketingAndAdvertisingExpense	$ 26,100,000us-gaap_MarketingAndAdvertisingExpense
Computers and software \| Minimum
Property and equipment
Estimated useful lives for computers, software, furniture and fixtures	2 years
Computers and software \| Maximum
Property and equipment
Estimated useful lives for computers, software, furniture and fixtures	7 years
Furniture and fixtures \| Minimum
Property and equipment
Estimated useful lives for computers, software, furniture and fixtures	2 years
Furniture and fixtures \| Maximum
Property and equipment
Estimated useful lives for computers, software, furniture and fixtures	7 years

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Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28360613&loc=d3e4542-108314

+ Details

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- Definition

The total expense recognized in the period for promotion, public relations, and brand or product advertising.

+ References

+ Details

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- Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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