Income Taxes Current Provision (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current Federal Tax Expense (Benefit)	$ 0	$ 0	$ (358)
Current State and Local Tax Expense (Benefit)	122	38	26
Current Foreign Tax Expense (Benefit)	1,252	271	(573)
Current Income Tax Expense (Benefit)	1,374	309	(905)
Deferred Federal Income Tax Expense (Benefit)	(65)	(9,451)	0
Deferred State and Local Income Tax Expense (Benefit)	(3)	(74)	0
Deferred Foreign Income Tax Expense (Benefit)	1,284	(1,916)	420
Deferred Income Tax Expense (Benefit)	1,216	(11,441)	420
Income Tax Expense (Benefit)	$ 2,590	$ (11,132)	$ (485)