Consolidated Condensed Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net loss	$ (3,746)	$ (361)	$ (4,839)	$ (894)
Foreign currency translation adjustments	(652)	963	(137)	(331)
Unrealized gain (loss) on investments	(7,089)	4,903	(10,146)	(3,501)
Other comprehensive income (loss)	(7,741)	5,866	(10,283)	(3,832)
Comprehensive income (loss)	$ (11,487)	$ 5,505	$ (15,122)	$ (4,726)