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Income Per Share - Reconciliation of Basic and Diluted Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Numerator:                      
Net income (loss) attributable to Viad (diluted) $ (2,322) $ 37,389 $ 23,490 $ (9,387) $ (21,674) $ 44,657 $ 27,947 $ 6,777 $ 49,170 $ 57,707 $ 42,269
Less: Allocation to non-vested shares                 (458) (700) (571)
Adjustment to carrying value of redeemable noncontrolling interest                 (251)    
Net income allocated to Viad common stockholders (basic)                 $ 48,461 $ 57,007 $ 41,698
Denominator:                      
Basic weighted-average outstanding common shares                 20,168 20,146 19,990
Additional dilutive shares related to share-based compensation                 236 259 187
Diluted weighted-average outstanding shares                 20,404 20,405 20,177
Basic income attributable to Viad common stockholders                 $ 2.40 $ 2.83 $ 2.09
Diluted income attributable to Viad common stockholders $ (0.12) [1] $ 1.83 [1] $ 1.15 [1] $ (0.47) [1] $ (1.07) [1] $ 2.19 [1] $ 1.37 [1] $ 0.33 [1] $ 2.40 $ 2.83 $ 2.09
[1] The sum of quarterly income per share amounts may not equal annual income per share due to rounding.