Business Segment Information (Tables)

9 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Financial Segment Information By Segment

Quarter Ended June 30, 2020 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$131,228	$51,020	$—	$124,390	$306,638	$16,286	$95	$323,019
Intersegment Revenues	$—	$26,793	$33,299	$2,647	$62,739	$341	$(63,080)	$—
Segment Profit: Net Income (Loss)	$(6,434)	$22,623	$15,239	$6,254	$37,682	$(9)	$3,577	$41,250

Nine Months Ended June 30, 2020 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$452,728	$151,908	$—	$569,856	$1,174,492	$83,445	$364	$1,258,301
Intersegment Revenues	$—	$77,370	$103,355	$8,499	$189,224	$598	$(189,822)	$—
Segment Profit: Net Income (Loss)	$(157,733)	$62,815	$51,081	$64,335	$20,498	$1,532	$(257)	$21,773

(Thousands)	Exploration and Production	Pipeline and Storage	Gathering	Utility	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Segment Assets:
At June 30, 2020	$1,886,791	$2,184,289	$706,760	$2,048,181	$6,826,021	$123,666	$169,298	$7,118,985
At September 30, 2019	$1,972,776	$1,893,514	$547,995	$1,991,338	$6,405,623	$122,241	$(65,707)	$6,462,157

Quarter Ended June 30, 2019 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$158,875	$46,024	$—	$129,977	$334,876	$22,189	$135	$357,200
Intersegment Revenues	$—	$22,943	$32,875	$2,944	$58,762	$681	$(59,443)	$—
Segment Profit: Net Income (Loss)	$26,512	$15,792	$14,638	$7,362	$64,304	$(1,444)	$893	$63,753

Nine Months Ended June 30, 2019 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$467,853	$148,663	$2	$648,624	$1,265,142	$134,605	$244	$1,399,991
Intersegment Revenues	$—	$69,712	$91,931	$9,984	$171,627	$1,056	$(172,683)	$—
Segment Profit: Net Income (Loss)	$86,599	$58,643	$41,511	$68,600	$255,353	$(946)	$2,602	$257,009