Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Lease, Cost

The components of lease cost for operating leases are as follows:

	Three Months Ended March 31, 2019
	(In thousands)
Lease cost	$	4,576
Variable lease cost	191
Operating lease expense	$	4,767

Schedule Of Lease By Asset Type

The ROU assets for operating lease liabilities as of March 31, 2019 were comprised as follows:

Leased Asset Class	Polymer		Chemical		Percentage		Average Months Remaining on the Lease	Weighted Average in Months
	(in thousands)
Railcars	$	697	$	24,066	36.7	%	51	18.7
Buildings	13,439		9,820		34.5	%	34	11.7
Equipment	1,251		10,461		17.4	%	30	5.2
Land	6,509		42		9.7	%	475	46.1
Other	568		583		1.7	%	25	0.4
Total	$	22,464	$	44,972				82.2

Lessee, Operating Lease, Liability, Maturity

The following tables show the undiscounted cash flows for the operating lease liabilities.

	March 31, 2019
	(In thousands)
April 1, 2019 through March 31, 2020	$	20,059
April 1, 2020 through March 31, 2021	17,315
April 1, 2021 through March 31, 2022	11,688
April 1, 2022 through March 31, 2023	7,490
April 1, 2023 through March 31, 2024	4,779
Thereafter	12,991
Total undiscounted operating lease liabilities	$	74,322
Present value discount	(6,407		)
Foreign currency and other	(479		)
Total discounted operating lease liabilities	$	67,436

Schedule of Future Minimum Rental Payments for Operating Leases

	December 31, 2018
	(In thousands)
2019	$	19,065
2020	16,891
2021	12,385
2022	8,284
2023	5,137
Thereafter	8,498
Total undiscounted operating lease liabilities	$	70,260

Changes in the aggregate carrying amount of ARO liability

The changes in the aggregate carrying amount of our asset retirement obligations are as follows:

	Three Months Ended March 31,
	2019			2018
	(In thousands)
Beginning balance	$	5,703		$	5,712
Accretion expense	91			85
Obligations settled	(206		)	(23		)
Foreign currency translation	(82		)	136
Ending balance	$	5,506		$	5,910