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Pension and Postretirement Benefits - Components of net periodic benefit cost and other amounts recognized in other comprehensive income of Viad's postretirement benefit plans (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Pension Plans        
Net periodic benefit cost of pension and post retirement benefit plans        
Service cost $ 25 $ 20 $ 76 $ 65
Interest cost 237 263 763 809
Expected return on plan assets (93) (107) (285) (327)
Amortization of prior service credit 0 0 0 0
Recognized net actuarial loss 100 101 368 305
Net periodic benefit cost 269 277 922 852
US Postretirement Benefit Plans        
Net periodic benefit cost of pension and post retirement benefit plans        
Service cost 27 11 114 105
Interest cost 148 140 464 517
Expected return on plan assets 0 0 0 0
Amortization of prior service credit (138) (149) (414) (445)
Recognized net actuarial loss 123 16 396 225
Net periodic benefit cost 160 18 560 402
Foreign Pension Plans        
Net periodic benefit cost of pension and post retirement benefit plans        
Service cost 123 104 382 313
Interest cost 124 158 384 478
Expected return on plan assets (143) (161) (443) (484)
Amortization of prior service credit 0 0 0 0
Recognized net actuarial loss 2 3 5 8
Net periodic benefit cost $ 106 $ 104 $ 328 $ 315