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Summary of Significant Accounting Policies - Goodwill and Intangible Impairment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Goodwill [Line Items]
Goodwill Balances	$ 193,380	$ 188,596	$ 188,478
AUSTRALIA
Goodwill [Line Items]
Goodwill and Intangible Asset Impairment	4,400
Goodwill Impairment	3,500
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	900
ITALY
Goodwill [Line Items]
Goodwill Balances	3,500
QUEBEC
Goodwill [Line Items]
Goodwill Balances	$ 2,400