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Filing Detail
Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000067716-18-000070
Filing Date
2018-11-02
Accepted
2018-11-02 09:20:22
Documents
101
Period of Report
2018-09-30

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES FORM 10-Q 09-30-2018 a2018q3form10-q.htm   iXBRL 10-Q 2999347
2 MDU RESOURCES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES a2018q3ex12.htm EX-12 36854
3 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2018q3ex31a.htm EX-31.A 9819
4 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2018q3ex31b.htm EX-31.B 9250
5 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2018q3ex32.htm EX-32 6477
6 MDU RESOURCES MINE SAFETY DISCLOSURES a2018q3ex95.htm EX-95 83644
  Complete submission text file 0000067716-18-000070.txt   12817937

Data Files

Seq Description Document Type Size
7 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20180930.xsd EX-101.SCH 60582
8 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20180930_cal.xml EX-101.CAL 112417
9 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20180930_def.xml EX-101.DEF 472223
10 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20180930_lab.xml EX-101.LAB 834445
11 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20180930_pre.xml EX-101.PRE 551490
12 EXTRACTED XBRL INSTANCE DOCUMENT a2018q3form10-q_htm.xml XML 2901718
Mailing Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503
Business Address 1200 WEST CENTURY AVENUE BISMARCK ND 58503 701-530-1059
MDU RESOURCES GROUP INC (Filer) CIK: 0000067716 (see all company filings)

IRS No.: 410423660 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-03480 | Film No.: 181155643
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)
Assistant Director 9