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Filing Detail
Form 8-K - Current report:
SEC Accession No. 0000067716-20-000047
Filing Date
2020-10-08
Accepted
2020-10-08 16:48:23
Documents
14
Period of Report
2020-09-16
Items
Item 1.04: Mine Safety - Reporting of Shutdowns and Patterns of Violations
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K a2020form8-k104krcidaho.htm   iXBRL 8-K 42551
  Complete submission text file 0000067716-20-000047.txt   212106

Data Files

Seq Description Document Type Size
2 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT mdu-20200916.xsd EX-101.SCH 4424
3 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT mdu-20200916_cal.xml EX-101.CAL 609
4 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT mdu-20200916_def.xml EX-101.DEF 14527
5 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT mdu-20200916_lab.xml EX-101.LAB 31386
6 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT mdu-20200916_pre.xml EX-101.PRE 16430
7 EXTRACTED XBRL INSTANCE DOCUMENT a2020form8-k104krcidaho_htm.xml XML 4539
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.: 201231361
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)