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Number of shares authorized for issuance under share-based payment arrangement.

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Gross number of share options (or share units) granted during the period.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jan. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 64,087,000	$ 67,162,000	$ 47,926,000
Share based compensation - Unrecognized deferred compensation cost	101,326,000
Amount of deferred cash-dominated award				$ 10
Carry Unit Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	574,000	4,570,000	23,050,000
Share based compensation - Unrecognized deferred compensation cost	0
2017 LTIP \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	39,413,000	$ 47,222,000	$ 33,809,000
Share based compensation - Unrecognized deferred compensation cost	$ 36,959,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	22,000,818	21,314,660	19,975,943
2017 LTIP \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	10 years
Share based compensation expense	$ 1,385,000	$ 997,000	$ (3,850,000)
Share based compensation - Unrecognized deferred compensation cost	$ 533,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			640
2019 LTIP [Member] \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
2019 LTIP [Member] \| Restricted Stock \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	50.00%
2019 LTIP [Member] \| Restricted Stock \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	25.00%
2019 LTIP [Member] \| Restricted Stock \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	25.00%
2021 Lightpath Incentive Plan \| Class A-2 management incentive units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards authorized (in shares)	350,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	309,678
2017 LTIP 4 Year Award \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
2017 LTIP 4 Year Award \| Stock options \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	50.00%
2017 LTIP 4 Year Award \| Stock options \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	25.00%
2017 LTIP 4 Year Award \| Stock options \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	25.00%
2017 LTIP 3 Year Award \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
2017 LTIP 3 Year Award \| Stock options \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	33.00%
2017 Amended LTIP \| Share-Based Payment Arrangement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards authorized (in shares)	89,879,291