CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)		$ 13,903	$ 23,380	$ (4,318)	$ 13,545
Other comprehensive income (loss):
Unrealized foreign currency translation adjustments		4,317	(8,095)	9,097	(11,204)
Change in net actuarial loss, net of tax	[1]	99	220	219	849
Change in prior service cost, net of tax	[1]	(36)	4	(71)	(180)
Comprehensive income		18,283	15,509	4,927	3,010
Non-redeemable noncontrolling interest:
Comprehensive (income) loss attributable to non-redeemable noncontrolling interest		(331)	33	89	397
Unrealized foreign currency translation adjustments		776		776
Redeemable noncontrolling interest:
Comprehensive loss attributable to redeemable noncontrolling interest		252	77	276	161
Comprehensive income attributable to Viad		$ 18,728	$ 15,542	$ 5,792	$ 3,407

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