CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)		$ 19,775	$ (28,729)	$ (68,283)	$ (325,280)
Other comprehensive income (loss):
Unrealized foreign currency translation adjustments		(8,634)	11,032	(980)	(7,342)
Change in net actuarial loss, net of tax	[1]	83	70	261	436
Change in prior service cost, net of tax	[1]		(27)	(56)	(82)
Comprehensive income (loss)		11,224	(17,654)	(69,058)	(332,268)
Non-redeemable noncontrolling interest:
Net (income) loss attributable to non-redeemable noncontrolling interest		(5,004)	(2,331)	(3,049)	636
Unrealized foreign currency translation adjustments		(1,960)	1,837	(141)	(1,949)
Redeemable noncontrolling interest:
Comprehensive loss attributable to redeemable noncontrolling interest		296	302	1,221	1,023
Comprehensive income (loss) attributable to Viad		$ 4,556	$ (17,846)	$ (71,027)	$ (332,558)

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