Annual report pursuant to Section 13 and 15(d)

Income Taxes Components of Income Tax Provision (Benefit) (Details)

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Income Taxes Components of Income Tax Provision (Benefit) (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) 16 1 0
Current Foreign Tax Expense (Benefit) 942 577 574
Current Income Tax Expense (Benefit) 958 578 574
Deferred Federal Income Tax Expense (Benefit) (13,759) (3,341) (5,217)
Deferred State and Local Income Tax Expense (Benefit) (1,034) 253 (1,174)
Deferred Foreign Income Tax Expense (Benefit) 126 54 (166)
Valuation Allowance, Deferred Tax Asset, Release due to Acquisition, amount (1,757) (2,335) 0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 14,891 3,087 6,385
Deferred Income Taxes Expense Benefit $ (1,533) $ (2,282) $ (172)