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Operating Lease (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Operating Leases, Rent Expense, Net [Abstract]      
Rent expense $ 7,177 $ 6,932 $ 7,169
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]      
2016 2,907    
2017 2,491    
2018 2,268    
2019 1,932    
2020 1,238    
Thereafter $ 6,199