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Business Acquisition Narratives (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2016
Jul. 01, 2016
Jul. 01, 2016
Dec. 31, 2016
Feb. 29, 2016
Business Acquisition [Line Items]          
Business Acquisition ProForma Earnings Per Share Basic And Diluted     $ (0.52)    
TVN [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Percentage of Voting Interests Acquired         100.00%
Business Combination, Final Purchase Price $ 82,512        
Business Combination, Acquisition and Integration Related Expenses   $ 6,500 $ 6,500 $ 16,900