CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 49,395	$ 58,184	$ 42,795
Other comprehensive income (loss):
Unrealized gains on investments, net of tax effects of $0, $121, and $47		195	75
Unrealized foreign currency translation adjustments, net of tax	(24,306)	17,058	(5,827)
Change in net actuarial gain (loss), net of tax effects of $305, $163, and $617	1,236	344	894
Change in prior service cost, net of tax effects of $(52), $(473), and $(219)	(153)	(774)	(357)
Comprehensive income	26,172	75,007	37,580
Comprehensive income attributable to non-redeemable noncontrolling interest	(542)	(523)	(526)
Comprehensive loss attributable to redeemable noncontrolling interest	317	46
Comprehensive income attributable to Viad	$ 25,947	$ 74,530	$ 37,054

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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