Condensed Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income (loss)	$ 1,129	$ (5,111)	$ 17,105	$ (9,626)
Unrealized loss on securities held as available for sale, net of tax:
Unrealized net holding loss arising during the period	0	(284)	(32)	(461)
Less: Reclassification adjustment for realized gains included in earnings	0	0	(230)	(2,467)
Foreign currency translation adjustments	5,101	(10,503)	4,762	(6,069)
Comprehensive income (loss)	$ 6,230	$ (15,898)	$ 21,605	$ (18,623)