Income Taxes Current Provision (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$ 0	$ 0	$ 0
Current State and Local Tax Expense (Benefit)	21	(70)	122
Current Foreign Tax Expense (Benefit)	2,127	2,299	1,252
Current Income Tax Expense (Benefit)	2,148	2,229	1,374
Deferred Federal Income Tax Expense (Benefit)	(73)	0	(65)
Deferred State and Local Income Tax Expense (Benefit)	(3)	0	(3)
Deferred Foreign Income Tax Expense (Benefit)	420	12,726	1,284
Deferred Income Tax Expense (Benefit)	344	12,726	1,216
Income tax expense	$ 2,492	$ 14,955	$ 2,590	[1]

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