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Nature of Operations and Summary of Significant Accounting Policies (Details) Narrative - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax $ 0 $ 0  
Accumulated other comprehensive loss: unrealized loss on available for sale securities 100   $ 100
Unrealized foreign currency gain (loss) 12 $ 289  
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification $ 4,300