CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss		$ (18,221)	$ (9,835)
Other comprehensive income (loss):
Unrealized foreign currency translation adjustments, net of tax	[1]	4,780	(3,109)
Change in net actuarial loss, net of tax	[1]	120	629
Change in prior service cost, net of tax	[1]	(35)	(184)
Comprehensive loss		(13,356)	(12,499)
Comprehensive loss attributable to non-redeemable noncontrolling interest		420	364
Comprehensive loss attributable to redeemable noncontrolling interest		24	84
Comprehensive loss attributable to Viad		$ (12,912)	$ (12,051)

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