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Debt Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Debt Disclosure [Abstract]    
Term loan, weighted average interest rate 1.565% 1.555%
Term Loan $ 210,375 $ 216,750
Less: Short-term debt 25,500 25,500
Long-term debt $ 184,875 $ 191,250