EDGAR Filing Documents for 0001466593-22-000010

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:

SEC Accession No. 0001466593-22-000010

Filing Date

2022-02-16

Accepted

2022-02-16 16:42:45

Documents

140

Period of Report

2021-12-31

Document Format Files

Seq	Description	Document	Type	Size
1	10-K	ottr-20211231.htm iXBRL	10-K	3923080
2	EX-21	a2021ex21subsidiariesofreg.htm	EX-21	6577
3	EX-23	a2021ex23consentofindepend.htm	EX-23	2364
4	EX-24	a2021ex24powerofattorney.htm	EX-24	12186
5	EX-31.1	a202110-kex311.htm	EX-31.1	9694
6	EX-31.2	a202110-kex312.htm	EX-31.2	9554
7	EX-32.1	a202110-kex321.htm	EX-32.1	4364
8	EX-32.2	a202110-kex322.htm	EX-32.2	4344
14	GRAPHIC	ottr-20211231_g1.jpg	GRAPHIC	39004
15	GRAPHIC	ottr-20211231_g2.jpg	GRAPHIC	31340
16	GRAPHIC	ottr-20211231_g3.jpg	GRAPHIC	35738
17	GRAPHIC	ottr-20211231_g4.jpg	GRAPHIC	30996
18	GRAPHIC	ottr-20211231_g5.jpg	GRAPHIC	29831
19	GRAPHIC	ottr-20211231_g6.jpg	GRAPHIC	35027
20	GRAPHIC	ottr-20211231_g7.jpg	GRAPHIC	34262
21	GRAPHIC	ottr-20211231_g8.jpg	GRAPHIC	47926
22	GRAPHIC	ottr-20211231_g9.jpg	GRAPHIC	57853
	Complete submission text file	0001466593-22-000010.txt		18472716

Data Files

Seq	Description	Document	Type	Size
9	XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT	ottr-20211231.xsd	EX-101.SCH	96585
10	XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT	ottr-20211231_cal.xml	EX-101.CAL	130850
11	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT	ottr-20211231_def.xml	EX-101.DEF	506549
12	XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT	ottr-20211231_lab.xml	EX-101.LAB	1118813
13	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT	ottr-20211231_pre.xml	EX-101.PRE	784085
134	EXTRACTED XBRL INSTANCE DOCUMENT	ottr-20211231_htm.xml	XML	3989674

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