Income Taxes Current Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$ 0	$ 0	$ 0
Current State and Local Tax Expense (Benefit)	30	21	(70)
Current Foreign Tax Expense (Benefit)	1,772	2,127	2,299
Current Income Tax Expense (Benefit)	1,802	2,148	2,229
Deferred Federal Income Tax Expense (Benefit)	35	(73)	0
Deferred State and Local Income Tax Expense (Benefit)	2	(3)	0
Deferred Foreign Income Tax Expense (Benefit)	(97)	420	12,726
Deferred Income Tax Expense (Benefit)	(60)	344	12,726
Total income tax provision	$ 1,742	$ 2,492	$ 14,955