Commitments, Contingencies and Legal Proceedings (Tables)

9 Months Ended

Sep. 30, 2020

Commitments And Contingencies Disclosure [Abstract]

Schedule of Reserves

Our reserve for past and future government oversight costs and long-term monitoring and maintenance is set forth below:

	Nine months ended September 30
In thousands		2020			2019
Balance at January 1,	$	21,870		$	45,001
Payments		(3,243	)		(20,771	)
Reserve adjustment		—			(2,509	)
Accretion		155		141
Balance at September 30,	$	18,782		$	21,862