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Inventory (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Inventory
Finished goods - DBS	$ 267,393	$ 259,274	$ 294,722
Raw materials	89,387	122,758	183,675
Work-in-process	112,769	82,361	31,535
Total inventory	$ 469,549	$ 464,393	$ 509,932

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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