Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2019
Jan. 24, 2020
Jun. 28, 2019
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Registrant Name MOBILE MINI INC    
Entity Central Index Key 0000911109    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Public Float     $ 1.3
Entity Common Stock, Shares Outstanding   44,152,190  
Entity File Number 1-12804    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 86-0748362    
Entity Address, Address Line One 4646 E. Van Buren Street    
Entity Address, Address Line Two Suite 400    
Entity Address, City or Town Phoenix    
Entity Address, State or Province AZ    
Entity Address, Postal Zip Code 85008    
City Area Code 480    
Local Phone Number 894-6311    
Document Annual Report true    
Document Transition Report false    
Entity Interactive Data Current Yes    
Documents Incorporated by Reference


Portions of the Proxy Statement for the registrant’s 2020 Annual Meeting of Stockholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein.

Common Stock      
Document Information [Line Items]      
Security 12b Title Common Stock, $.01 par value    
Trading Symbol MINI    
Security Exchange Name NASDAQ    
Preferred Stock      
Document Information [Line Items]      
Security 12b Title Preferred Share Purchase Rights    
No Trading Symbol Flag true