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Acquisitions - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 31, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Business Acquisition [Line Items]          
Strategic Transaction Costs   $ 58 $ 1,642 $ 152 $ 2,979
Globe Holding Company LLC          
Business Acquisition [Line Items]          
Voting interest acquired (percentage) 100.00%        
All-cash transaction value $ 215,000        
Working capital adjustment 1,400        
Estimated future amortization expense, remainder of fiscal year   2,100   2,100  
Estimated future amortization expense, year 1   4,100   4,100  
Finite-Lived Intangible Assets, Amortization Expense, Year Four   3,200   3,200  
Estimated future amortization expense, year 2   4,100   4,100  
Estimated future amortization expense, year 3   4,100   4,100  
Estimated future depreciation expense, remainder of fiscal year   500   500  
Estimated future depreciation expense, year 1   1,000   1,000  
Estimated future depreciation expense, year 2   1,000   1,000  
Estimated future depreciation expense, year 3   1,000   1,000  
Estimated future depreciation expense, year 4   $ 1,000   1,000  
Goodwill $ 74,500        
Sales       60,900  
Net income       $ 7,400  
Distributor relationships | Globe Holding Company LLC          
Business Acquisition [Line Items]          
Acquired intangible assets, amortization period 20 years        
Acquired technology and other intangible assets | Globe Holding Company LLC          
Business Acquisition [Line Items]          
Acquired intangible assets, amortization period 5 years