Segment Information - Certain Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues	$ 1,093,999	$ 1,349,405	$ 1,345,243
Cost of revenues	692,651	884,979	897,783
Selling, general, and administrative expenses	160,053	177,474	170,490
Restructuring expenses	9,443	8,928	6,586
Acquisition related expenses	8,836		3,191
Loss on disposal and impairment of assets	4,144	11,653	17,873
Adjusted EBITDA	263,625	307,981	292,688
Capital expenditures	91,142	124,906	107,205
Total identifiable assets	1,831,445	1,763,958	1,787,344
Corporate
Segment Reporting Information [Line Items]
Revenues	0	0	0
Cost of revenues	1,430	1,528	788
Selling, general, and administrative expenses	58,144	56,554	57,064
Restructuring expenses	338	3,874	1,343
Acquisition related expenses	8,836		878
Loss on disposal and impairment of assets	0	0	0
Adjusted EBITDA	(37,090)	(37,131)	(42,192)
Capital expenditures	4,813	16,991	14,529
Total identifiable assets	37,987	51,421	33,581
Eliminations
Segment Reporting Information [Line Items]
Revenues	(5,946)	(10,492)	(12,113)
Cost of revenues	(5,946)	(10,494)	(11,249)
Selling, general, and administrative expenses	(226)	0	(230)
Restructuring expenses	0	0	0
Acquisition related expenses	0		0
Loss on disposal and impairment of assets	0	0	0
Adjusted EBITDA	66	70	(574)
Capital expenditures	0	0	0
North America
Segment Reporting Information [Line Items]
Revenues	756,243	853,648	820,252
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenues	762,153	863,514	830,179
Cost of revenues	506,338	577,302	564,888
Selling, general, and administrative expenses	60,263	69,250	64,955
Restructuring expenses	1,665	1,226	3,597
Acquisition related expenses	0		(329)
Loss on disposal and impairment of assets	2,813	9,449	12,295
Adjusted EBITDA	195,555	216,933	200,335
Capital expenditures	51,949	58,631	44,867
Total identifiable assets	1,253,811	1,141,084	1,195,693
North America | Eliminations
Segment Reporting Information [Line Items]
Revenues	(5,910)	(9,866)	(9,928)
Europe & Africa
Segment Reporting Information [Line Items]
Revenues	265,910	395,694	407,584
Europe & Africa | Operating Segments
Segment Reporting Information [Line Items]
Revenues	265,946	396,320	409,770
Cost of revenues	139,170	245,362	256,542
Selling, general, and administrative expenses	34,196	42,569	38,293
Restructuring expenses	7,325	3,828	1,646
Acquisition related expenses	0		1,518
Loss on disposal and impairment of assets	1,361	2,359	5,360
Adjusted EBITDA	92,584	108,388	114,934
Capital expenditures	32,228	44,995	40,687
Total identifiable assets	483,869	511,037	494,457
Europe & Africa | Eliminations
Segment Reporting Information [Line Items]
Revenues	(36)	(626)	(2,185)
Australia & New Zealand
Segment Reporting Information [Line Items]
Revenues	71,846	100,063	117,407
Australia & New Zealand | Operating Segments
Segment Reporting Information [Line Items]
Revenues	71,846	100,063	117,407
Cost of revenues	51,659	71,281	86,814
Selling, general, and administrative expenses	7,676	9,101	10,408
Restructuring expenses	115	0	0
Acquisition related expenses	0		1,124
Loss on disposal and impairment of assets	(30)	(155)	218
Adjusted EBITDA	12,510	19,721	20,185
Capital expenditures	2,152	4,289	7,122
Total identifiable assets	55,778	60,416	63,613
Australia & New Zealand | Eliminations
Segment Reporting Information [Line Items]
Revenues	$ 0	$ 0	$ 0