SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000067716-18-000013
Filing Date
2018-02-23
Accepted
2018-02-23 09:35:31
Documents
152
Period of Report
2017-12-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES 2017 FORM 10-K a2017form10-k.htm   iXBRL 10-K 5683324
2 MDU RESOURCES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES a2017ex12.htm EX-12 69793
3 MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES a2017ex21.htm EX-21 65061
4 MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM a2017ex23.htm EX-23 2868
5 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2017ex31a.htm EX-31.A 10447
6 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2017ex31b.htm EX-31.B 10437
7 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2017ex32.htm EX-32 6943
8 MDU RESOURCES MINE SAFETY DISCLOSURES a2017ex95.htm EX-95 208996
  Complete submission text file 0000067716-18-000013.txt   24470829

Data Files

Seq Description Document Type Size
9 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20171231.xsd EX-101.SCH 110173
10 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20171231_cal.xml EX-101.CAL 183386
11 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20171231_def.xml EX-101.DEF 952950
12 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20171231_lab.xml EX-101.LAB 1594434
13 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20171231_pre.xml EX-101.PRE 1145094
14 EXTRACTED XBRL INSTANCE DOCUMENT a2017form10-k_htm.xml XML 5319284
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-K | Act: 34 | File No.: 001-03480 | Film No.: 18634856
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)