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REVENUE RECOGNITION AND RECEIVABLES - Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts Receivable
Gross accounts receivable	$ 96,600	$ 98,800
Allowance for credit losses	15,300	15,100
Customer receivable, current	9,135	7,986
Customer receivable - long term	36,735	41,030
Replace and remove program receivable	36,682	50,511
FirstNet agreement
Accounts Receivable
Customer receivable	45,900	49,000
Customer receivable, current	9,100	8,000
Customer receivable - long term	36,800	41,000
Government support agreements
Accounts Receivable
Replace and remove program receivable	36,700	50,500
Government support agreements | Remove And Replace Program
Accounts Receivable
Replace and remove program receivable	25,300	37,700
Government support agreements | Other government support programs
Accounts Receivable
Replace and remove program receivable	$ 11,400	$ 12,800

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- Definition

Amount receivable from customers.

+ References

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- Definition

Amount receivable from customers due within one year or the normal operating cycle, if longer.

+ References

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Amount receivable from customers classified as noncurrent.

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- Definition

Amount replace and remove program receivable from customers due within one year or the normal operating cycle, if longer.

+ References

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- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Name Accounting Standards Codification
-Section 45
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-13

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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-Publisher FASB
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- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

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