FAIR VALUE MEASUREMENTS AND INVESTMENTS - Recurring (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Warrants \| Alaska Communications
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Financial instruments	$ 0	$ 0
Recurring
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Total assets and liabilities measured at fair value	(21,728)	(22,438)
Recurring \| Short term investments
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Investments	396	395
Recurring \| Employee benefit plan investments
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Investments	2,251	2,257
Recurring \| Interest rate swap
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Derivative liabilities	486	(545)
Recurring \| Redeemable common units \| Alloy Inc
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Financial instruments	(15,001)	(15,000)
Recurring \| Contingent consideration
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Financial instruments	(9,860)	(9,545)
Recurring \| Level 1
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Total assets and liabilities measured at fair value	2,647	2,652
Recurring \| Level 1 \| Short term investments
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Investments	396	395
Recurring \| Level 1 \| Employee benefit plan investments
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Investments	2,251	2,257
Recurring \| Level 2
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Total assets and liabilities measured at fair value	486	(545)
Recurring \| Level 2 \| Interest rate swap
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Derivative liabilities	486	(545)
Recurring \| Level 3
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Total assets and liabilities measured at fair value	(24,861)	(24,545)
Recurring \| Level 3 \| Redeemable common units \| Alloy Inc
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Financial instruments	(15,001)	(15,000)
Recurring \| Level 3 \| Contingent consideration
FAIR VALUE MEASUREMENTS AND INVESTMENTS
Financial instruments	$ (9,860)	$ (9,545)

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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