Income Taxes Federal State And Foreign (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Examination [Line Items]
Current Federal Tax Expense (Benefit)	$ 0	$ 0	$ (1,616)
Deferred Federal Income Tax Expense (Benefit)	0	0	0
Current And Deferred Federal Income Tax Expense (Benefit)	0	0	(1,616)
Current State and Local Tax Expense (Benefit)	(23)	(18)	58
Deferred State and Local Income Tax Expense (Benefit)	0	0	0
Current And Deferred State And Local Tax Expense (Benefit)	(23)	(18)	58
Current Foreign Tax Expense (Benefit)	289	390	289
Deferred Foreign Income Tax Expense (Benefit)	184	(128)	122
Current And Deferred Foreign Tax Expense (Benefit)	473	262	411
Income Tax Expense (Benefit)	$ 450	$ 244	$ (1,147)
Minimum [Member]
Income Tax Examination [Line Items]
Federal Tax Credit Carryforwards, Ending Expiration Dates	Dec. 31, 2021
Maximum [Member]
Income Tax Examination [Line Items]
Federal Tax Credit Carryforwards, Ending Expiration Dates	Dec. 31, 2035