INCOME TAXES (Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Deferred tax assets:
Net operating loss carryforwards	$ 11,894	$ 24,259
Capital loss carryforwards	16,038	15,425
Restructuring costs	201	1,105
Accrued expenses	2,811	2,165
Other assets	5,497	4,285
R&D credit	1,890	1,612
Property and equipment	1,958	1,446
Foreign tax credits	24,842	6,117
Gross deferred tax assets	65,131	56,414
Valuation allowance	(26,561)	(24,145)	(33,665)	(17,157)
Total deferred tax assets	38,570	32,269
Deferred tax liabilities:
Property and equipment	(20,856)	(19,547)
Intangible assets	(12,193)	(9,381)
Other liabilities	(1,296)	(1,760)
Total deferred tax liabilities	(34,345)	(30,688)
Total deferred tax assets	$ 4,225	$ 1,581