CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)		$ (28,729)	$ 34,466	$ (325,280)	$ 30,148
Other comprehensive income (loss):
Unrealized foreign currency translation adjustments		11,032	(5,229)	(7,342)	3,868
Change in net actuarial loss, net of tax	[1]	70	83	436	302
Change in prior service cost, net of tax	[1]	(27)	(35)	(82)	(106)
Comprehensive income (loss)		(17,654)	29,285	(332,268)	34,212
Non-redeemable noncontrolling interest:
Net (income) loss attributable to non-redeemable noncontrolling interest		(2,331)	(3,418)	636	(3,329)
Unrealized foreign currency translation adjustments		1,837	(682)	(1,949)	94
Redeemable noncontrolling interest:
Comprehensive loss attributable to redeemable noncontrolling interest		302	368	1,023	644
Comprehensive income (loss) attributable to Viad		$ (17,846)	$ 25,553	$ (332,558)	$ 31,621

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