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. 0001466593-21-000011
Filing Date
2021-02-19
Accepted
2021-02-19 15:27:01
Documents
135
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 10-K ottr-20201231.htm   iXBRL 10-K 3944937
2 EX-21-A a2020ex21-asubsidiariesofr.htm EX-21.-A 6580
3 EX-23-A a2020ex23-aconsentofindepe.htm EX-23.-A 2364
4 EX-24-A a2020ex24-apowerofattorney.htm EX-24.-A 10694
5 EX-31.1 a202010kex311.htm EX-31.1 9572
6 EX-31.2 a202010kex312.htm EX-31.2 9430
7 EX-32.1 a202010kex321.htm EX-32.1 4197
8 EX-32.2 a202010kex322.htm EX-32.2 4174
14 ottr-20201231_g1.jpg GRAPHIC 42225
15 ottr-20201231_g2.jpg GRAPHIC 32551
16 ottr-20201231_g3.jpg GRAPHIC 36310
17 ottr-20201231_g4.jpg GRAPHIC 29522
18 ottr-20201231_g5.jpg GRAPHIC 31287
19 ottr-20201231_g6.jpg GRAPHIC 59385
  Complete submission text file 0001466593-21-000011.txt   18522954

Data Files

Seq Description Document Type Size
9 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT ottr-20201231.xsd EX-101.SCH 103676
10 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT ottr-20201231_cal.xml EX-101.CAL 161122
11 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT ottr-20201231_def.xml EX-101.DEF 548829
12 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT ottr-20201231_lab.xml EX-101.LAB 1145589
13 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT ottr-20201231_pre.xml EX-101.PRE 811155
20 EXTRACTED XBRL INSTANCE DOCUMENT ottr-20201231_htm.xml XML 4138546
Mailing Address 215 S CASCADE ST PO BOX 496 FERGUS FALLS MN 56538-0496
Business Address 215 S CASCADE ST PO BOX 496 FERGUS FALLS MN 56538-0496 866-410-8780
Otter Tail Corp (Filer) CIK: 0001466593 (see all company filings)

IRS No.: 270383995 | State of Incorp.: MN | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-53713 | Film No.: 21655067
SIC: 4911 Electric Services