Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Schedule of Changes In Qualifying Facility Liability

The following summarizes the change in the liability (in thousands):

	December 31,
	2019			2018
Beginning QF liability	$	102,260		$	132,786
Unrecovered amount (1)	(17,257		)	(39,827		)
Interest expense	7,934			9,301
Ending QF liability	$	92,937		$	102,260

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⁽¹⁾   The change in the unrecovered amount includes (i) a lower periodic adjustment of $14.2 million due to price escalation, which was less than previously modeled, and (ii) a lower impact of the annual reset to actual output and pricing resulting in approximately $6.7 million in higher supply costs for these QF contracts due primarily to outages at two facilities in 2018.

Schedule of Estimated Gross Contractual Obligation Less Amounts Recoverable Through Rates

The following summarizes the estimated gross contractual obligation less amounts recoverable through rates (in thousands):

	Gross Obligation		Recoverable Amounts		Net
2020	$	76,533	$	59,647	$	16,886
2021	78,356		60,136		18,220
2022	80,226		60,639		19,587
2023	82,320		61,280		21,040
2024	79,726		60,706		19,020
Thereafter	233,632		205,787		27,845
Total	$	630,793	$	508,195	$	122,598