CoverMay 25, 2021
Cover [Abstract]
Document Type8-K
Amendment Flagfalse
Document Period End DateMay 25,
Entity File Number001-37973
Entity Registrant NameNI Holdings, Inc.
Entity Central Index Key0001681206
Entity Tax Identification Number81-2683619
Entity Incorporation, State or Country CodeND
Entity Address, Address Line One1101 First Avenue North
Entity Address, City or TownFargo
Entity Address, State or ProvinceND
Entity Address, Postal Zip Code58102
City Area Code(701)
Local Phone Number298-4200
Written Communicationsfalse
Soliciting Materialfalse
Pre-commencement Tender Offerfalse
Pre-commencement Issuer Tender Offerfalse
Title of 12(b) SecurityCommon Stock, $0.01 par value per share
Trading SymbolNODK
Security Exchange NameNASDAQ
Entity Emerging Growth Companytrue
Elected Not To Use the Extended Transition Periodfalse