Balance Sheet Components Balance Sheet Components (Policies)

3 Months Ended

Mar. 31, 2020

Balance Sheet Related Disclosures [Abstract]

Inventory, Policy [Policy Text Block]

Inventories of materials and supplies, fuel stock and stored natural gas are recorded at average cost for our regulated operations and the lower of cost or market for our non-regulated operations and consisted of the following as of March 31, 2020 and December 31, 2019 (dollars in thousands):

	March 31,		December 31,
	2020		2019
Materials and supplies	$	49,007	$	47,402
Fuel stock	4,740		4,875
Stored natural gas	2,934		14,306
Total	$	56,681	$	66,583