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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001437749-18-002843
Filing Date
2018-02-20
Accepted
2018-02-20 13:10:49
Documents
153
Period of Report
2017-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K ottr20171231_10k.htm 10-K 5335134
2 EXHIBIT 10.F-18A ex_104630.htm EX-10.F18A 6453
3 EXHIBIT 10.F-19 ex_104631.htm EX-10.F19 9836
4 EXHIBIT 10.I-7 ex_104632.htm EX-10.I7 58006
5 EXHIBIT 10.J ex_104633.htm EX-10.J 56145
6 EXHIBIT 12.1 ex_104634.htm EX-12.1 54403
7 EXHIBIT 21.A ex_104635.htm EX-21.A 3620
8 EXHIBIT 23.A ex_104636.htm EX-23.A 2499
9 EXHIBIT 24.A ex_104637.htm EX-24.A 10767
10 EXHIBIT 31.1 ex_104638.htm EX-31.1 9415
11 EXHIBIT 31.2 ex_104639.htm EX-31.2 9448
12 EXHIBIT 32.1 ex_104640.htm EX-32.1 5121
13 EXHIBIT 32.2 ex_104641.htm EX-32.2 5390
20 a4.jpg GRAPHIC 22343
21 replacementchart.jpg GRAPHIC 21650
22 a2.jpg GRAPHIC 32673
23 a1.jpg GRAPHIC 22461
  Complete submission text file 0001437749-18-002843.txt   27979658

Data Files

Seq Description Document Type Size
14 XBRL INSTANCE DOCUMENT ottr-20171231.xml EX-101.INS 7862329
15 XBRL TAXONOMY EXTENSION SCHEMA ottr-20171231.xsd EX-101.SCH 219804
16 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE ottr-20171231_cal.xml EX-101.CAL 134625
17 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE ottr-20171231_def.xml EX-101.DEF 1303887
18 XBRL TAXONOMY EXTENSION LABEL LINKBASE ottr-20171231_lab.xml EX-101.LAB 1072958
19 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE ottr-20171231_pre.xml EX-101.PRE 1374387
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.: 18623959
SIC: 4911 Electric Services