# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-20-000044
Filing Date
2020-08-06
Accepted
2020-08-06 09:12:09
Documents
100
Period of Report
2020-06-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | MDU RESOURCES FORM 10-Q 06-30-2020 | mdu-20200630.htm iXBRL | 10-Q | 3893562
2 | MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER | a2020q2ex31a.htm | EX-31.A | 10571
3 | MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER | a2020q2ex31b.htm | EX-31.B | 10154
4 | MDU RESOURCES CERTIFICATION OF CEO AND CFO | a2020q2ex32.htm | EX-32 | 6224
5 | MDU RESOURCES MINE SAFETY DISCLOSURES | a2020q2ex95.htm | EX-95 | 186864
| Complete submission text file | 0000067716-20-000044.txt |  | 15593515

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
6 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | mdu-20200630.xsd | EX-101.SCH | 53687
7 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | mdu-20200630_cal.xml | EX-101.CAL | 100599
8 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | mdu-20200630_def.xml | EX-101.DEF | 413795
9 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | mdu-20200630_lab.xml | EX-101.LAB | 726716
10 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | mdu-20200630_pre.xml | EX-101.PRE | 500519
11 | EXTRACTED XBRL INSTANCE DOCUMENT | mdu-20200630_htm.xml | XML | 3973077

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.: 201080167
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)