Goodwill and Intangible Assets - Goodwill (Details) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 157,000,000
Adjustments to prior year acquisitions	800,000
Currency translations	800,000
Goodwill, Ending Balance	158,600,000
Goodwill, Impairment Loss	0	$ 0
IT Services and Hardware [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	146,000,000
Adjustments to prior year acquisitions	0
Currency translations	800,000
Goodwill, Ending Balance	146,800,000
Entertainment and Communications [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	11,000,000
Adjustments to prior year acquisitions	800,000
Currency translations	0
Goodwill, Ending Balance	$ 11,800,000

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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