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Consolidated Statements of Total Comprehensive Loss (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Unrealized gains on securities, taxes	$ 0
Reclassification adjustment for net gain (loss) included in net loss, tax	0
(Loss) gain on foreign currency translation, taxes	0
Amortization of postretirement benefit, taxes	$ 0

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Amount of tax effect, net of reclassification adjustments, on the result from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency.

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