Note 8 - Goodwill and Intangible Assets (Tables)

6 Months Ended

Sep. 30, 2025

Notes Tables

Schedule of Goodwill [Table Text Block]

(In thousands)	Net Carrying Amount as of March 31, 2025		Additions		Impairment		Net Carrying Amount as of September 30, 2025
Goodwill	$	12,280	$	-	$	-		12,280
	$	12,280	$	-	$	-	$	12,280

Schedule of Intangible Assets [Table Text Block]

(In thousands)	Weighted Average Remaining Amortization Period (Years)		Net Carrying Amount as of March 31, 2025		Additions		Impairment		Amortization			Net Carrying Amount as of September 30, 2025
Definite lived intangible assets:
Subscriber relationships		3.74	$	2,234	$	-	$	-	$	(247	)	$	1,987
Trade name		8.67		467		-		-		(25	)		442
				2,701		-		-		(272	)		2,429
Indefinite lived intangible assets:
IP Addresses		N/A		392		-		-		-			392
FCC Spectrum license		N/A		580		-		-		-			580
				972		-		-		-			972
			$	3,673	$	-	$	-	$	(272	)	$	3,401

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(In thousands)
Remainder of FY 2026	$	290
FY 2027		582
FY 2028		582
FY 2029		582
FY 2030		180
Thereafter		213
Total	$	2,429