Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income (loss)	$ (155)	$ 4,179	$ (2,855)	$ (107,307)
Other comprehensive income (loss):
Foreign currency translation adjustments	(3)		(13)	(7)
Unrealized gains (loss) on securities:
Arising during the period	24	23	(17)	62
Reclassification to net income (loss)	(7)	6	(5)	(4)
Net unrealized gains (loss)	17	29	(22)	58
Other comprehensive income (loss)	14	29	(35)	51
Comprehensive income (loss)	$ (141)	$ 4,208	$ (2,890)	$ (107,256)