Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) segment	Mar. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Segment revenues:
Revenues	$ 391,141	$ 372,914
Segment contribution:
Segment contribution	35,932	36,786
Reconciling items:
Depreciation, depletion, and amortization	(29,408)	(29,408)
Selling, general and administrative expense	(31,947)	(24,770)
Loss from partially owned entities	(139)	(27)
Interest expense	(24,495)	(27,727)
Interest income	623	257
Loss on debt extinguishment and modification	(21,385)	(171)
Foreign currency exchange gain (loss)	680	(2,773)
Other income (expense), net	56	(467)
(Loss) income before income tax	(8,728)	5,878
Operating Segments
Segment revenues:
Revenues	391,141	372,914
Segment contribution:
Segment contribution	97,287	90,964
Operating Segments | Warehouse
Segment revenues:
Revenues	286,517	275,807
Segment contribution:
Segment contribution	89,570	83,520
Operating Segments | Third-Party Managed
Segment revenues:
Revenues	63,876	58,367
Segment contribution:
Segment contribution	3,777	2,988
Operating Segments | Transportation
Segment revenues:
Revenues	38,345	36,181
Segment contribution:
Segment contribution	3,594	3,553
Operating Segments | Quarry
Segment revenues:
Revenues	2,403	2,559
Segment contribution:
Segment contribution	$ 346	$ 903