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Revenue from Contracts with Customers (Details 2) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Revenue from Contract with Customer [Abstract]    
Volume-based rebates and other promotions contract liability $ 7,925 $ 13,466
Contract with Customer, Liability, Current 4,732 4,468
Contract with Customer, Liability, Noncurrent 2,669 $ 2,483
Contract with Customer, Liability, Revenue Recognized 3,295  
Contract With Customer, Liability, Increase for Additional Performance Obligations 3,660  
Revenue from Contract with Customer, Future Performance Obligations Satisfied, Fiscal Year Maturity [Abstract]    
Remaining 2018 3,799  
2019 1,835  
2020 1,115  
2021 416  
2022 230  
Thereafter 6  
Total $ 7,401