SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Business (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2020 USD ($)	Mar. 31, 2020 item state mi
Number of states | state				23
Number of fiber route miles | mi				37,500
Number of voice connections				821,000
Number of data connections				786,000
Number of video connections				83,000
Forecast
Deferred payroll taxes | $			$ 4.2
Percentage of deferred payroll taxes due	50.00%	50.00%