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Stockholders' Equity - Exchangeable Shares, Share Repurchase Program and Secondary Public Offering (Details)
$ / shares in Units, shares in Millions, $ in Millions
Sep. 09, 2019
$ / shares
shares
Jun. 13, 2019
shares
Jun. 01, 2018
shares
Jan. 31, 2020
USD ($)
Nov. 30, 2018
USD ($)
Exchangeable Shares and Share Repurchase Program          
Remaining amount under repurchase program | $       $ 58.5  
AEA Investors LP | Selling Stockholders          
Exchangeable Shares and Share Repurchase Program          
Shares sold 6.8        
Price to the public (in dollars per share) | $ / shares $ 27.20        
Maximum          
Exchangeable Shares and Share Repurchase Program          
Stock repurchase program, authorized amount | $         $ 75.0
Titan          
Exchangeable Shares and Share Repurchase Program          
Issuance of shares to current shareholders of Titan (in shares)     1.1    
Exchangeable shares converted   1.1      
Exchangeable shares conversion ratio     1    
Duration which stock can not be transferred     1 year