XML 12 R1.htm IDEA: XBRL DOCUMENT v3.20.4
Document And Entity Information
Dec. 29, 2020
Document Information [Line Items]  
Entity, Registrant Name BOSTON OMAHA CORPORATION
Document, Type 8-K/A
Document, Period End Date Dec. 29, 2020
Entity, Incorporation, State or Country Code DE
Entity, File Number 001-38113
Entity, Tax Identification Number 27-0788438
Entity, Address, Address Line One 1601 Dodge St.
Entity, Address, Address Line Two Suite 3300
Entity, Address, City or Town Omaha
Entity, Address, State or Province NE
Entity, Address, Postal Zip Code 68102
City Area Code 857
Local Phone Number 256-0079
Title of 12(b) Security Class A common stock
Trading Symbol BOMN
Security Exchange Name NASDAQ
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity, Emerging Growth Company false
Amendment Description UBB 8-K/A Filing
Amendment Flag true
Entity, Central Index Key 0001494582