Segment Information - Certain Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue from external customers	$ 336,184	$ 357,572
Cost of revenues	228,252	246,562
Selling, general, and administrative expenses	41,740	41,949
Redomicile-related expenses		760
Restructuring expenses	2,413	8,243	$ 10,400
Acquisition and divestiture-related expenses	1,720	8,456
Loss (gain) on disposal and impairment of assets	5,420	3,194
Adjusted EBITDA	68,655	71,247
Depreciation and accretion expense	31,042	29,121
Adjusted EBITA	37,614	42,129
Capital expenditures	20,739	38,561
Segment Eliminations
Segment Reporting Information [Line Items]
Intersegment revenues	(2,717)	(2,310)
Cost of revenues	(1,693)	(1,275)
Adjusted EBITDA	(999)	(1,045)
Adjusted EBITA	(995)	(1,045)
North America
Segment Reporting Information [Line Items]
Revenue from external customers	207,532	239,066
Intersegment revenues	2,228	1,991
Cost of revenues	145,386	165,852
Selling, general, and administrative expenses	16,628	18,252
Restructuring expenses	1,057	3,727
Acquisition and divestiture-related expenses		1,512
Loss (gain) on disposal and impairment of assets	2,022	3,171
Adjusted EBITDA	47,739	56,954
Depreciation and accretion expense	16,543	17,155
Adjusted EBITA	31,204	39,802
Capital expenditures	5,533	25,535
Europe And Africa
Segment Reporting Information [Line Items]
Revenue from external customers	97,956	86,928
Intersegment revenues	489	319
Cost of revenues	61,534	58,638
Selling, general, and administrative expenses	9,242	9,633
Redomicile-related expenses		22
Restructuring expenses	681	787
Acquisition and divestiture-related expenses	1,349	517
Loss (gain) on disposal and impairment of assets	3,410	15
Adjusted EBITDA	27,668	18,976
Depreciation and accretion expense	13,236	9,834
Adjusted EBITA	14,432	9,141
Capital expenditures	9,400	10,715
Australia And New Zealand
Segment Reporting Information [Line Items]
Revenue from external customers	30,696	31,578
Cost of revenues	22,941	23,380
Selling, general, and administrative expenses	2,537	1,850
Acquisition and divestiture-related expenses	203	1,020
Loss (gain) on disposal and impairment of assets	(12)	(40)
Adjusted EBITDA	5,218	6,349
Depreciation and accretion expense	1,263	2,132
Adjusted EBITA	3,956	4,218
Capital expenditures	1,866	2,166
Corporate Segment
Segment Reporting Information [Line Items]
Cost of revenues	84	(33)
Selling, general, and administrative expenses	13,333	12,214
Redomicile-related expenses		738
Restructuring expenses	675	3,729
Acquisition and divestiture-related expenses	168	5,407
Loss (gain) on disposal and impairment of assets		48
Adjusted EBITDA	(10,971)	(9,987)
Adjusted EBITA	(10,983)	(9,987)
Capital expenditures	$ 3,940	$ 145