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Filing Detail
Form 8-K - Current report:
SEC Accession No. 0000067716-21-000023
Filing Date
2021-05-06
Accepted
2021-05-05 17:55:18
Documents
16
Period of Report
2021-05-05
Items
Item 2.02: Results of Operations and Financial Condition
Item 7.01: Regulation FD Disclosure
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 MDU RESOURCES GROUP, INC. FORM 8-K mdu-20210505.htm   iXBRL 8-K 32390
2 MDU RESOURCES GROUP, INC. EX 99 a2021q1ex99.htm EX-99 397389
3 MDU RESOURCES GROUP, INC. LOGO mdurirpressreleasebasa181.jpg GRAPHIC 748436
  Complete submission text file 0000067716-21-000023.txt   1626693

Data Files

Seq Description Document Type Size
4 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20210505.xsd EX-101.SCH 2416
5 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20210505_cal.xml EX-101.CAL 711
6 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20210505_def.xml EX-101.DEF 14946
7 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20210505_lab.xml EX-101.LAB 29024
8 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20210505_pre.xml EX-101.PRE 15562
9 EXTRACTED XBRL INSTANCE DOCUMENT mdu-20210505_htm.xml XML 11211
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)

IRS No.: 301133956 | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 001-03480 | Film No.: 21894863
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)