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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 11 Months Ended 12 Months Ended
Dec. 31, 2017
Jan. 31, 2019
Jan. 31, 2018
Jan. 31, 2017
Income Tax Contingency [Line Items]        
Corporate income tax rate 35.00% 21.00% 33.80% 35.00%
Percentage of undistributed foreign earnings   15.50%    
Percentage of all other earnings   8.00%    
Provisional tax expense     $ 45,000  
Payment of transition tax installments period     8 years  
Transition tax payable due to enactment of 2017 tax act     $ 28,200  
Amount of estimated foreign earnings     279,900  
Provisional amount of deferred tax assets and liabilities     8,300  
Unremitted foreign earnings     236,800  
Provisional change to deferred taxes related to withholding and U.S. state income taxes     8,500  
Reduction of deferred tax liability, unremitted foreign earnings   $ 8,000    
Cash paid for income taxes   $ 9,500 $ 20,400 $ 22,800
Effective tax rate for continuing operations   0.30% 136.10% 31.70%
Income tax benefit from foreign operations       $ 0
Income tax expense (benefit)   $ 162 $ 57,367 16,315
Tax expense (benefits) recorded in additional paid in capital       300
Unrecognized tax benefits which would impact the Company's effective tax rate   1,200 2,300 2,600
Accrued interest (net of tax benefit) and penalties related to unrecognized tax benefits   700 800 700
Interest (net of tax benefit) and penalties   0 100 $ 100
Wind Fall Tax Benefit        
Income Tax Contingency [Line Items]        
Income tax expense (benefit)   (100) (100)  
Shortfall Tax Expenses        
Income Tax Contingency [Line Items]        
Income tax expense (benefit)   1,100 $ 1,100  
Domestic Country        
Income Tax Contingency [Line Items]        
Operating Loss carryforwards   0    
State and Local Jurisdiction        
Income Tax Contingency [Line Items]        
Operating Loss carryforwards   4,700    
Foreign Tax Authority        
Income Tax Contingency [Line Items]        
Operating Loss carryforwards   37,100    
Operating loss carryforwards, valuation allowance   5,300    
Swiss subsidiary        
Income Tax Contingency [Line Items]        
Operating Loss carryforwards   $ 14,300    
Minimum        
Income Tax Contingency [Line Items]        
Expiration periods   1 year    
Maximum        
Income Tax Contingency [Line Items]        
Measurement period   1 year    
Expiration periods   10 years