Inventories (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011	Dec. 31, 2011
Inventory, Net [Abstract]
Raw materials	$ 10,385			$ 10,385			$ 10,925
Work-in-process	705			705			599
Finished goods	14,012			14,012			20,127
Inventory, Gross	25,102			25,102			31,651
Less: inventory valuation allowance	(2,464)			(2,464)			(4,640)
Inventories, net	22,638			22,638			27,011	[1]
Other Inventory, Net [Abstract]
Inventory deposit (A)	11,091	[2]		11,091	[2]		11,578	[2]
Less: inventory deposit valuation allowance	(2,989)			(2,989)			(3,135)
Inventory Deposit, Net	8,102			8,102			8,443	[1]
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross	715			715			3,836
Inventory, net	578		364	1,031		822
Inventory Deposit, net	64		193	363		408
Adverse Purchase Commitments	$ (102)		$ 546	$ (28)		$ 797

[1] (A)As adjusted to reflect the impact of additional tax-related adjustments to the Company's purchase accounting for Continuous Computing in accordance with ASC 805-10 "Business Combinations". See Note 2 — Acquisitions for additional information.

[2] The Company is contractually obligated to reimburse its contract manufacturers for the cost of excess inventory that has been purchased as a result of the Company's forecasted demand when there is no alternative use. The Company's inventory deposit represents a cash deposit paid to its contract manufacturers for inventory in excess of near term demand. The deposit is recorded net of adverse purchase commitment liabilities, and therefore the net balance of the deposit represents inventory the Company believes will be utilized. The deposit will be applied against future adverse purchase commitments owed to the Company's contract manufacturers or reduced based on the usage of inventory. See Note 9 - Commitments and Contingencies for additional information regarding the Company's adverse purchase commitment liability.