Goodwill and Other Intangible Assets - Summary of Goodwill Balances by Component and Segment (Parenthetical) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Amount of goodwill included in the carrying amount of disposal operations	[1]		$ 573,000
GES International
Goodwill [Line Items]
Amount of goodwill included in the carrying amount of disposal operations		$ 600,000	$ 573,000	[1]
Goodwill impairment charge		$ 23,000

[1] During 2015, the Company partially disposed of certain operations associated with a venue services contract within GES International. Accordingly, goodwill of $0.6 million was included in the carrying amount of those operations, and a loss of $23,000 was recorded in income from continuing operations related to the disposal.