SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

3 Months Ended

Mar. 31, 2018

SUPPLEMENTAL CASH FLOW INFORMATION

Schedule of supplemental disclosure requirements for the statements of cash flows

	Three Months Ended March 31,
(in thousands)	2018		2017
Additions to property, plant and equipment acquired through financing obligations	$	1,208	$	623
Retirements of financed property, plant and equipment and related obligations	2,246		—
Purchase of property, plant and equipment in accounts payable at period end	545		1,337