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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, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Numerator:                      
Net income (loss) attributable to Viad (diluted) $ (5,428) $ 31,416 $ 13,824 $ (17,777) $ (2,322) $ 37,389 $ 23,490 $ (9,387) $ 22,035 $ 49,170 $ 57,707
Less: Allocation to non-vested shares                 (147) (458) (700)
Adjustment to the redemption value of redeemable noncontrolling interest                 (1,318) (251)  
Net income allocated to Viad common stockholders (basic)                 $ 20,570 $ 48,461 $ 57,007
Denominator:                      
Basic weighted-average outstanding common shares                 20,146 20,168 20,146
Additional dilutive shares related to share-based compensation                 138 236 259
Diluted weighted-average outstanding shares                 20,284 20,404 20,405
Basic income attributable to Viad common stockholders                 $ 1.02 $ 2.40 $ 2.83
Diluted income attributable to Viad common stockholders $ (0.31) [1] $ 1.53 [1] $ 0.67 [1] $ (0.89) [1] $ (0.12) [1] $ 1.83 [1] $ 1.15 [1] $ (0.47) [1] $ 1.02 $ 2.40 $ 2.83
[1] The sum of quarterly income per share amounts may not equal annual income per share due to rounding.