CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net loss		$ (88,435)	$ (18,221)
Other comprehensive income (loss):
Unrealized foreign currency translation adjustments		(28,158)	4,780
Change in net actuarial loss, net of tax	[1]	341	120
Change in prior service cost, net of tax	[1]	(27)	(35)
Comprehensive loss		(116,279)	(13,356)
Non-redeemable noncontrolling interest:
Comprehensive loss attributable to non-redeemable noncontrolling interest		1,333	420
Unrealized foreign currency translation adjustments		(5,719)
Redeemable noncontrolling interest:
Comprehensive loss attributable to redeemable noncontrolling interest		517	24
Comprehensive loss attributable to Viad		$ (120,148)	$ (12,912)

[1] The tax effect on other comprehensive income (loss) is not significant.