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. 0000067716-19-000019
Filing Date
2019-02-22
Accepted
2019-02-22 09:46:22
Documents
160
Period of Report
2018-12-31

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES 2018 FORM 10-K a2018form10-k.htm   iXBRL 10-K 5914700
2 MDU RESOURCES FIRST AMENDMENT TO FOURTH AMENDED AND RESTATED CREDIT AGREEMENT a2018ex4l.htm EX-4.L 105884
3 MDU RESOURCES DIRECTOR COMPENSATION POLICY a2018ex10b.htm EX-10.B 30929
4 MDU RESOURCES LONG-TERM PERFORMANCE INCENTIVE PLAN a2018ex10k.htm EX-10.K 71071
5 MDU RESOURCES SUBSIDIARIES OF MDU RESOURCES a2018ex21.htm EX-21 64374
6 MDU RESOURCES CONSENT OF INDEPENDENT ACCOUNTING FIRM a2018ex23.htm EX-23 2868
7 MDU RESOURCES CERTIFICATION OF CHIEF EXECUTIVE OFFICER a2018ex31a.htm EX-31.A 10447
8 MDU RESOURCES CERTIFICATION OF CHIEF FINANCIAL OFFICER a2018ex31b.htm EX-31.B 10437
9 MDU RESOURCES CERTIFICATION OF CEO AND CFO a2018ex32.htm EX-32 6943
10 MDU RESOURCES MINE SAFETY DISCLOSURES a2018ex95.htm EX-95 168455
  Complete submission text file 0000067716-19-000019.txt   26329547

Data Files

Seq Description Document Type Size
11 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20181231.xsd EX-101.SCH 116454
12 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20181231_cal.xml EX-101.CAL 169310
13 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20181231_def.xml EX-101.DEF 1024395
14 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20181231_lab.xml EX-101.LAB 1722004
15 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20181231_pre.xml EX-101.PRE 1203180
16 EXTRACTED XBRL INSTANCE DOCUMENT a2018form10-k_htm.xml XML 5647782
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.: 301133956 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-03480 | Film No.: 19624152
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)