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Recently Adopted and Recently Issued Accounting Standards - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
New Accounting Pronouncement, Early Adoption [Line Items]        
Undiscounted future minimum rent commitments under noncancellable leases $ 41,000   $ 41,000  
Additional discrete tax benefit 543 $ 515 3,650 $ 3,210
Accounting Standards Update 2016-09        
New Accounting Pronouncement, Early Adoption [Line Items]        
Additional discrete tax benefit     6,900  
Accounting Standards Update 2016-16        
New Accounting Pronouncement, Early Adoption [Line Items]        
Cumulative-effect adjustment to retained earnings 5,900   5,900  
Pro Forma | Accounting Standards Update 2017-07        
New Accounting Pronouncement, Early Adoption [Line Items]        
Decrease in operating income $ 3,500   $ 3,500