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ACQUISITIONS - Bureau of Internet Accessibility Inc - Tangible and intangible assets acquired and liabilities assumed (parenthetical) (Details)		6 Months Ended
	Mar. 09, 2022 Y	Jun. 30, 2022 USD ($)
Business Acquisition [Line Items]
Amortization expense \| $		$ 221,000
Bureau of Internet Accessibility Inc \| Discount rate
Business Acquisition [Line Items]
Fair value of the contingent consideration liability, Measurement Input	12.35
Bureau of Internet Accessibility Inc \| Discount rate \| Recurring
Business Acquisition [Line Items]
Fair value of the contingent consideration liability, Measurement Input	10.75
Bureau of Internet Accessibility Inc \| Discount rate \| Non-recurring
Business Acquisition [Line Items]
Fair value of the contingent consideration liability, Measurement Input	11.75
Bureau of Internet Accessibility Inc \| Volatility rate
Business Acquisition [Line Items]
Fair value of the contingent consideration liability, Measurement Input	28.83
Bureau of Internet Accessibility Inc \| Risk-free interest rate
Business Acquisition [Line Items]
Fair value of the contingent consideration liability, Measurement Input	2.84
Bureau of Internet Accessibility Inc \| Discount periods \| Recurring
Business Acquisition [Line Items]
Fair value of the contingent consideration liability, Measurement Input	1.91
Bureau of Internet Accessibility Inc \| Discount periods \| Non-recurring
Business Acquisition [Line Items]
Fair value of the contingent consideration liability, Measurement Input	0.7
Maximum \| Bureau of Internet Accessibility Inc
Business Acquisition [Line Items]
Useful life	7 years
Minimum \| Bureau of Internet Accessibility Inc
Business Acquisition [Line Items]
Useful life	2 years