Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, net of $19.9 million accumulated impairment loss as of December 31, 2019	$ 110,173
Foreign currency translation	(9,658)
Goodwill impairment	(93,606)
Goodwill, net of $113.5 million accumulated impairment loss as of March 31, 2020	6,909
Accumulated impairment loss	(113,500)	$ (19,900)
CANADA
Goodwill [Roll Forward]
Goodwill, net of $19.9 million accumulated impairment loss as of December 31, 2019	102,238
Foreign currency translation	(8,632)
Goodwill impairment	(93,606)
Goodwill, net of $113.5 million accumulated impairment loss as of March 31, 2020	0
AUSTRALIA
Goodwill [Roll Forward]
Goodwill, net of $19.9 million accumulated impairment loss as of December 31, 2019	7,935
Foreign currency translation	(1,026)
Goodwill impairment	0
Goodwill, net of $113.5 million accumulated impairment loss as of March 31, 2020	6,909
UNITED STATES
Goodwill [Roll Forward]
Goodwill, net of $19.9 million accumulated impairment loss as of December 31, 2019	0
Foreign currency translation	0
Goodwill impairment	0
Goodwill, net of $113.5 million accumulated impairment loss as of March 31, 2020	$ 0