Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

11. Supplemental Cash Flow Information

The following provides additional information relating to cash flow activities:

	Three Months Ended
	March 31,
	2021			2020
	(In Thousands)
Cash refunds for:
Income taxes, net	$	(216	)	$	(332	)
Noncash continuing investing and financing activities:
Accounts receivable, supplies and accounts payable    associated with additions of property, plant and    equipment	$	18,091		$	20,229
Dividends accrued on Series E Redeemable Preferred	$	9,511		$	8,307
Accretion of Series E Redeemable Preferred	$	511		$	504