Inventories, Net and Significant Suppliers - Related Party Vendor (Details) (Related Party Vendor [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Related Party Vendor [Member]
Related Party Transaction [Line Items]
Ownership Percentage in Third Party by Executive	40.00%
Inventory Purchases	$ 2,216	$ 1,355
% of Total Inventory Purchases	3.40%	2.70%
Accounts Payable	$ 1,073		$ 1,815
% of Accounts Payable	2.10%		3.00%

Carrying value as of the balance sheet date of obligations incurred and payable, which are not elsewhere specified in the taxonomy.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph 15

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

-Publisher FASB

-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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