Note 17 - Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Transportation		Water		Specialty		Materials			Total
2021
Total revenue from reportable segments	$	525,235	$	113,432	$	200,271	$	176,841		$	1,015,779
Elimination of intersegment revenue		—		—		—		(51,607	)		(51,607	)
Revenue from external customers		525,235		113,432		200,271		125,234			964,172
Gross profit		59,517		10,563		24,369		22,497			116,946
Depreciation, depletion and amortization		5,570		7,323		5,674		6,681			25,248

2020
Total revenue from reportable segments	$	535,101	$	109,724	$	174,914	$	141,858		$	961,597
Elimination of intersegment revenue		—		—		—		(45,826	)		(45,826	)
Revenue from external customers		535,101		109,724		174,914		96,032			915,771
Gross profit		31,197		12,579		25,280		19,287			88,343
Depreciation, depletion and amortization		4,391		9,577		6,737		5,470			26,175

	Transportation		Water		Specialty		Materials			Total
2021
Total revenue from reportable segments	$	876,264	$	213,185	$	355,945	$	255,990		$	1,701,384
Elimination of intersegment revenue		—		—		—		(67,299	)		(67,299	)
Revenue from external customers		876,264		213,185		355,945		188,691			1,634,085
Gross profit		95,383		19,129		41,694		24,058			180,264
Depreciation, depletion and amortization		10,082		14,603		10,251		12,315			47,251
Segment assets		308,918		113,986		104,128		364,413			891,445

2020
Total revenue from reportable segments	$	886,002	$	211,381	$	307,953	$	206,510		$	1,611,846
Elimination of intersegment revenue		—		—		—		(60,148	)		(60,148	)
Revenue from external customers		886,002		211,381		307,953		146,362			1,551,698
Gross profit		56,566		21,926		14,561		19,089			112,142
Depreciation, depletion and amortization		9,417		19,141		13,120		10,443			52,121
Segment assets		304,312		267,385		123,881		377,909			1,073,487

A reconciliation of segment gross profit to consolidated income (loss) before provision for (benefit from) income taxes is as follows:

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
(in thousands)	2021			2020			2021			2020
Total gross profit from reportable segments	$	116,946		$	88,343		$	180,264		$	112,142
Selling, general and administrative expenses		74,069			78,023			149,797			151,239
Non-cash impairment charges (see Note 3)		—			—			—			24,413
Other costs (see Note 3)		5,953			13,659			81,788			18,824
Gain on sales of property and equipment (see Note 12)		(31,636	)		(1,190	)		(34,190	)		(1,813	)
Total other (income) expense		(2,806	)		606			(719	)		9,482
Income (loss) before provision for (benefit from) income taxes	$	71,366		$	(2,755	)	$	(16,412	)	$	(90,003	)