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Employee Stock Ownership Feature of 401Plan - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2004
Dec. 31, 1989
Compensation And Retirement Disclosure [Abstract]        
ESOP borrowing to purchase treasury shares       $ 40,000,000
Borrowings of Viad under its revolving credit agreement     $ 12,200,000  
ESOP, Loan entered with Viad     12,400,000  
Minimum quarterly principal payments     250,000  
Reduction of stockholders' equity     $ 250,000  
Expense recorded by Viad $ 100,000 $ 1,300,000    
Unallocated shares 0 4,361    
Shares allocated   126,216