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Restructuring Charges - Narratives (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2015
Jun. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Restructuring and Other Charges                          
Restructuring and other charges $ 289 $ 1,193 $ 0 $ 219 $ 353 $ 4,822 $ 1,193 $ 5,175 $ 1,482 $ 5,394 $ 4,745 $ 5,394 $ 0
Expected retention payments, 2016                     2,000    
Expected retention payments, 2017                     2,000    
Spin-off                          
Restructuring and Other Charges                          
Restructuring and other charges                     4,135 0  
Separation Charges                          
Restructuring and Other Charges                          
Accrued Liabilities                     900    
Cost Reduction Plan                          
Restructuring and Other Charges                          
Restructuring and other charges                     $ 610 $ 5,394