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Note 15 - Share-based Payments (Details Textual) - USD ($) $ in Thousands				1 Months Ended		3 Months Ended
	Jan. 16, 2023	Nov. 09, 2022	Oct. 08, 2010	Nov. 30, 2020	Sep. 30, 2015	Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2023	Nov. 22, 2006
Common Stock, Shares, Outstanding (in shares)						10,928,623			10,903,405
Share-Based Payment Arrangement, Expense						$ 1,873		$ 2,246
Capitalized Internal Use Software [Member]
Share-Based Payment Arrangement, Amount Capitalized						87	$ 100	0
Equity Compensation Plan 2006 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)			1,725,000	4,000,000	2,475,000					1,250,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)			475,000	1,530,000	750,000
Share-Based Payment Arrangement, Expense						$ 1,423		1,504
Equity Compensation Plan 2006 [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)						7 years
Equity Compensation Plan 2006 [Member] \| Automatic Formula Grants of Nonqualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						1 year
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)						5 years
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount						$ 4,600
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						2 years 2 months 12 days
The 2022 Wavelo Equity Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)		7 years
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount						$ 4,100
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						2 years
Common Stock, Capital Shares Reserved for Future Issuance (in shares)		20,000,000
Common Stock, Shares, Outstanding (in shares)		100,000,000
Share-Based Payment Arrangement, Expense						$ 469		546
The 2022 Wavelo Equity Compensation Plan [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage		25.00%
The 2022 Ting Equity Compensation Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	10
Common Stock, Shares, Outstanding (in shares)	100
Share-Based Payment Arrangement, Expense						68		196
The 2022 Ting Equity Compensation Plan [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	7 years
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount						$ 500
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						2 years 3 months 18 days
Share-Based Payment Arrangement, Expense						$ 1,900		$ 2,200