# 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)

EIN.: 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)