Note 15 - Subsequent Events (Details Textual) $ in Millions	1 Months Ended
Dec. 31, 2024 USD ($)
Leases at Gray Owned Tower Sites [Member]
Proceeds from Lease Payment, Sales-Type and Direct Financing Leases, Investing Activity	$ 35

Amount of cash inflow from principal payment received from sales-type and direct financing leases classified as investing activity.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-SubTopic 230
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479024/942-230-45-4

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration