CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (USD $) In Thousands, unless otherwise specified	Total	Capital Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2011	$ 338,256	$ 16,221	$ 52,738	$ 332,099	$ (62,802)
Comprehensive income (loss):
Net income (loss)	4,646			4,646
Other comprehensive income (loss):
Foreign currency translation, net of tax	(4,886)				(4,886)
Unrealized loss on marketable securities, net of tax	1,168				1,168
Unrealized loss on derivative instruments, net of tax	212				212
Total comprehensive income (loss)	1,140			4,646	(3,506)
Stock options exercised	3,427	115	3,312
Stock issued to directors		15	(15)
Shares issued for employees stock purchase plan	413	15	398
Shares issued for restricted stock	(571)	30	(601)
Stock-based compensation expense	2,678		2,678
Ending Balance at Jun. 30, 2012	$ 345,343	$ 16,396	$ 58,510	$ 336,745	$ (66,308)