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Equity and Noncontrolling Interest - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Equity Class Of Treasury Stock [Line Items]        
Shares Repurchased And Retired During Period     83,879 18,854
Payments For Repurchase Of Common Stock     $ 5,859 $ 1,630
2015 Share Repurchase Program [Member]        
Equity Class Of Treasury Stock [Line Items]        
Share Repurchase Program Authorized Amount $ 100,000 $ 100,000 $ 100,000 $ 100,000
Cost of Goods Sold [Member]        
Concentration Risk [Line Items]        
Reclassification Percentage 30.00% 30.00% 30.00% 30.00%
Operating Expenses [Member]        
Concentration Risk [Line Items]        
Reclassification Percentage 70.00% 70.00% 70.00% 70.00%