REVENUE AND RECEIVABLES - Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable
Gross accounts receivable	$ 207,900	$ 154,500
Customer receivable, current	7,249	5,803
Customer receivable - long term	45,676	46,706
Allowance for credit loss	16,400	15,200
Receivable for government funded programs	49,300	5,700
FirstNet agreement
Accounts Receivable
Customer receivable	52,900	52,500
Customer receivable, current	7,200	5,800
Customer receivable - long term	$ 45,700	$ 46,700