CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Costs related to gain on sale of patent and other technology assets, net of costs	$ 0	$ 3,647	$ 0

Costs Related to Gain on Sale of Patent and Other Technology Assets, Net of Costs

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration