Business Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total revenue	$ 619,801	$ 563,379
Gross profit (loss)	40,478	56,283
Segment assets	2,439,780	1,759,227	$ 2,476,601
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	627,391	570,979
Gross profit (loss)	40,478	56,283
Depreciation, depletion and amortization	26,087	13,063
Segment assets	1,241,468	778,607
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	(7,590)	(7,600)
Transportation [Member]
Segment Reporting Information [Line Items]
Total revenue	338,210	359,145
Transportation [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	338,210	359,145
Gross profit (loss)	21,250	31,462
Depreciation, depletion and amortization	3,640	5,020
Segment assets	410,354	376,970
Transportation [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0
Water [Member]
Segment Reporting Information [Line Items]
Total revenue	99,255	40,041
Water [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	99,255	40,041
Gross profit (loss)	8,119	11,564
Depreciation, depletion and amortization	11,056	506
Segment assets	303,671	4,197
Water [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0
Specialty [Member]
Segment Reporting Information [Line Items]
Total revenue	140,693	118,471
Specialty [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	140,693	118,471
Gross profit (loss)	14,867	15,736
Depreciation, depletion and amortization	5,812	2,127
Segment assets	152,307	101,355
Specialty [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0
Materials [Member]
Segment Reporting Information [Line Items]
Total revenue	41,643	45,722
Materials [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	49,233	53,322
Gross profit (loss)	(3,758)	(2,479)
Depreciation, depletion and amortization	5,579	5,410
Segment assets	375,136	296,085
Materials [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	$ (7,590)	$ (7,600)

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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