Principles Of Preparation (Tables)

9 Months Ended

Sep. 30, 2017

Supplemental Cash Flow Information [Abstract]



Supplemental Cash Flow Disclosures (in thousands)
		Nine Months Ended
		September 30,
		2017			2016
Cash paid for:
	Interest on long-term debt and borrowings under the revolving credit facility	$	47,412		$	46,867
	Income tax paid, net	1,576			3,337
Non-cash investing and financing activities:
	Sale of interest in Four Corners Generating Station (a)	—			27,720
	Changes in accrued plant additions	(6,228		)	4,277
	Grants of restricted shares of common stock	1,171			1,236
	Issuance of performance shares	932			—

(a)

The Company sold its interest in Four Corners Generating Station ("Four Corners") in July 2016 for approximately $32.0 million based on book value as defined in the purchase and sale agreement related to the sale. The sales price was adjusted downward by $7.0 million and $19.5 million to reflect Arizona Public Service Company's ("APS") affiliate assumption of the Company's obligation to pay for future plant decommissioning and mine reclamation expense, respectively. The sales price was also adjusted downward by approximately $1.3 million for closing adjustments and other assets and liabilities assumed by APS's affiliate. At the closing of the sale on July 6, 2016, the Company received approximately $4.2 million in cash.