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Filing Detail
Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-23-000066
Filing Date
2023-05-04
Accepted
2023-05-04 08:43:03
Documents
105
Period of Report
2023-03-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES FORM 10-Q 03-31-2023 mdu-20230331.htm   iXBRL 10-Q 2621065
2 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2023q1ex31a.htm EX-31.A 9311
3 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2023q1ex31b.htm EX-31.B 8924
4 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2023q1ex32.htm EX-32 5445
5 MDU RESOURCES MINE SAFETY DISCLOSURES a2023q1ex95.htm EX-95 125116
  Complete submission text file 0000067716-23-000066.txt   11799441

Data Files

Seq Description Document Type Size
6 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20230331.xsd EX-101.SCH 55729
7 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20230331_cal.xml EX-101.CAL 80649
8 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20230331_def.xml EX-101.DEF 413747
9 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20230331_lab.xml EX-101.LAB 756481
10 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20230331_pre.xml EX-101.PRE 523593
99 EXTRACTED XBRL INSTANCE DOCUMENT mdu-20230331_htm.xml XML 2421499
Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503 701-530-1000
MDU RESOURCES GROUP INC (Filer) CIK: 0000067716 (see all company filings)

IRS No.: 301133956 | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 23886737
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)